Safe sleep: eight things the guidance agrees on, and four places it doesn’t.
Most pages about baby sleep either give you one confident rule or tell you that experts disagree. This page does neither. It starts with the eight rules the AAP and the Lullaby Trust state identically, quoted from both — back to sleep, a firm flat surface, a clear cot, their own space in your room, never a sofa, no smoke, no overheating, and no side sleeping as a compromise. Then it reports the four places the published guidance genuinely does not agree: two room-temperature ranges that meet at exactly one point, a six-month window in the room-sharing advice, two swaddling answers published inside one meta-analysis, and two sofa risk multipliers that are not measured against the same baseline. None of the second half gives you permission to change anything in the first half, and the page says so before it starts.
Eight rules both sources state, in their own words.
Not this page’s summary and not one source’s opinion. Each card below carries two quotes: one from the AAP’s 2022 policy statement and one from the Lullaby Trust. On these eight points there is no published disagreement to report, and the reason this section is first is that a page about where guidance differs is dangerous if it lets a reader file the core rules under “apparently that’s debatable”. It is not.
On the back, for every sleep, day and night
“Back to sleep for every sleep.”
AAP 2022 policy statement, Table 2 (level A)
“Always place your baby on their back to sleep, rather than on their front or side, as this is one of the best things you can do to make sure they’re sleeping as safely as possible.”
The Lullaby Trust — sleeping position
To reduce the risk of sleep-related death, it is recommended that infants be placed for sleep in a supine (back) position for every sleep by every caregiver until the child reaches 1 year of age.
Why — AAP 2022 policy statement and technical report
A firm, flat, non-inclined surface
“Use a firm, flat, noninclined sleep surface to reduce the risk of suffocation or wedging/entrapment.”
AAP 2022 policy statement, Table 2 (level A)
“Keep your baby’s sleep surface flat. Don’t incline, tilt or prop the mattress, cot or your baby – these don’t help with reflux and are unlikely to improve cold symptoms.”
The Lullaby Trust — sleeping position
Sleep surfaces with inclines of more than 10 degrees are unsafe for infant sleep.
Why — AAP 2022 policy statement and technical report
A clear cot — a fitted sheet and nothing else
“Keep soft objects, such as pillows, pillow-like toys, quilts, comforters, mattress toppers, fur-like materials, and loose bedding, such as blankets and nonfitted sheets, away from the infant’s sleep area to reduce the risk of SIDS, suffocation, entrapment/wedging, and strangulation.”
AAP 2022 policy statement, Table 2 (level A)
“Keep their cot clear.”
The Lullaby Trust — safer sleep overview (the ABCs)
Airway obstruction from soft objects or loose bedding is the most common mechanism for accidental infant suffocation.
Why — AAP 2022 policy statement and technical report
Their own sleep space, in the same room as you
“It is recommended that infants sleep in the parents’ room, close to the parents’ bed, but on a separate surface designed for infants, ideally for at least the first 6 mo.”
AAP 2022 policy statement, Table 2 (level A)
“The safest place for a baby to sleep is in their own clear, flat, firm separate sleep space (e.g. a cot or Moses basket) in the same room as you.”
The Lullaby Trust — safer sleep overview
The safest place for a baby to sleep is on a separate sleep surface designed for infants close to the parents’ bed.
Why — AAP 2022 policy statement and technical report
Never on a sofa or armchair, and not in an adult bed
“Bed sharing on a soft surface, such as a waterbed, old mattress, sofa, couch, or armchair.”
AAP 2022 policy statement, bed-sharing risk tiers (more than 10 times the baseline risk)
“You should never sleep with your baby on a sofa or armchair, this increases the risk of SIDS by 50 times.”
The Lullaby Trust — co-sleeping survey guidance
The AAP is unable to recommend bed sharing under any circumstances. Evidence suggests that it is relatively less hazardous (but still not recommended) to fall asleep with the infant in the adult bed than on a sofa or armchair, should the parent fall asleep.
Why — AAP 2022 policy statement and technical report
No smoke, before birth or after
“Avoid smoke and nicotine exposure during pregnancy and after birth.”
AAP 2022 policy statement, Table 2 (level A)
“The risk of SIDS is much higher if you or your partner smoke whilst you’re pregnant, or after your baby is born.”
The Lullaby Trust — safer sleep overview
Bed sharing with a current smoker (even if the smoker does not smoke in bed) or if the pregnant parent smoked during pregnancy increases the magnitude of risk more than 10-fold.
Why — AAP 2022 policy statement and technical report
Avoid overheating, and keep the head uncovered
“Avoid overheating and head covering in infants.”
AAP 2022 policy statement, Table 2 (level A)
“The risk of sudden infant death syndrome (SIDS) is higher in babies who get too hot.”
The Lullaby Trust — room temperature
Given the questionable benefit of hat use for the prevention of hypothermia and the risk of overheating, it is advised not to place hats on infants when indoors except in the first hours of life or in the NICU.
Why — AAP 2022 policy statement and technical report
Side sleeping is not a halfway house — it is not safe either
“Side sleeping is not safe and is not advised.”
AAP 2022 policy statement
“Sleeping a baby on their front or side greatly increases the risk of SIDS. The risk of SIDS is particularly high for babies who are usually placed on their back to sleep but are sometimes placed on their front or side.”
The Lullaby Trust — sleeping position
The risk of SIDS is exceptionally high for infants who are placed on the side and found on the stomach (OR, 8.7). The side sleep position is inherently unstable, and the probability of an infant rolling to the prone position from the side sleep position is significantly greater than rolling prone from the back.
Why — AAP 2022 policy statement and technical report
The four differences further down this page do not change one word of the eight rules above. Two published temperature ranges that meet at a point, a six-month boundary in the room-sharing advice, two swaddling answers in one paper and two risk multipliers with different baselines are all real, and every one of them sits at the edge of guidance whose centre is not in dispute. Nothing below is a reason to place a baby on their front, to use a soft surface, to put anything in the cot, to smoke near a baby or to move a baby to a sofa. If that is the only sentence you read, it is the one that matters.
Ruled out by name in the AAP’s own statement.
These are not this page’s additions to the list above. Each is a product or a practice the source rules out in its own words, quoted here so the eight rules do not have to be interpreted.
Weighted items, of every kindWeighted blankets, weighted sleepers, weighted swaddles, or other weighted objects are not safe and therefore not recommended.AAP 2022 policy statement
Home breathing monitors as a risk-reduction measureDo not use home cardiorespiratory monitors as a strategy to reduce the risk of SIDS. Their use may also give the family a false sense of security regarding the risk of sleep-related death.AAP 2022 policy statement (level A), with the technical report
Hats indoorsIt is advised not to place hats on infants when indoors except in the first hours of life or in the NICU, given the questionable benefit of hat use for the prevention of hypothermia and the risk of overheating.AAP 2022 policy statement
Inclined sleep surfacesSleep surfaces with inclines of more than 10 degrees are unsafe for infant sleep.AAP 2022 policy statement
Bumper padsBumper pads or similar products that attach to crib slats or sides are not recommended because they have been implicated in deaths attributable to suffocation, entrapment/wedging, and strangulation.AAP 2022 policy statement
Swaddling as a risk-reduction measureThere is no evidence to recommend swaddling as a strategy to reduce the risk of SIDS.AAP 2022 policy statement (level C) — a claim about efficacy, not about safety, and the same evidence reports an elevated estimate for swaddled babies placed on the back
Side sleeping as a compromiseSide sleeping is not safe and is not advised.AAP 2022 policy statement
Disagreement 1 of 4 — measured, not asserted
Two published temperature ranges that meet at exactly one point.
The number parents are given most often is a room temperature, and it comes with a unit the reader has to convert. Published as each source publishes it:
Published range
Source
Both units
In their words
16–20 °C
The Lullaby Trust
16–20 °C · 60.8–68.0 °F
“A room temperature of 16 – 20°C, with light bedding or a lightweight, well-fitting baby sleep bag, is comfortable.”
68–72 °F
Sleep Foundation
20–22.22 °C · 68.0–72.0 °F
“Experts generally recommend keeping a baby’s room temperature between 68 and 72 degrees Fahrenheit (20 to 22 degrees Celsius).”
68–72 °F
WebMD
20–22.22 °C · 68.0–72.0 °F
“It’s recommended that the best temperature for babies is between 68 to 72 degrees Fahrenheit or 20 to 22 degrees Celsius.”
The UK range, in Fahrenheit60.8–68.0 °F16–20 °C converts to this. The top of it is 68.0 °F.
The US range, in Celsius20.0–22.2 °C68–72 °F converts to this. The bottom of it is 20.0 °C.
The two published ranges do not overlap, and they do not leave a gap either: they meet at a single point. The UK range ends where the US range begins, and that is not a coincidence of rounding — 20 °C is exactly 68 °F. So a room at 20 °C / 68 °F is the only temperature this page can show that sits inside both published recommendations at once, and everything below it is inside one published range while being outside the other. This build sweeps the whole plausible range in tenths of a degree to check that claim and reports the count, rather than asserting it.
And the source those numbers are usually attributed to publishes no number at all.
Both ranges above circulate as “the AAP recommendation”. This run counted the strings in the AAP’s own documents rather than assuming, and the result is the most interesting thing on this page.
What the AAP actually recommends
“Avoid overheating and head covering in infants.”
Level A recommendation. Source: AAP 2022 policy statement, Table 2.
What is not in the document
No temperature figure of any kind. The recommendation is about overheating and the head, and it leaves the number to the individual baby and the individual room.
Counted this run across the 2022 policy statement and its technical report: zero occurrences of a Fahrenheit value, zero of a Celsius value, zero of a temperature range. The word “temperature” appears three times, all of them describing body-temperature measurements inside cited studies.
Two sources publish ranges, they meet at one point, and the source they are both attributed to publishes neither. This page will not resolve that by inventing a consensus figure. The published instruction it can hand you is about overheating rather than about a dial: check the chest or the back of the neck, and if the skin is hot or sweaty, remove a layer. The Lullaby Trust states plainly that “every baby is different and our advice on the ideal room temperature for babies is intended as a guide only”, and the AAP’s technical report notes that overheating risk is not only about the room — the prone position “increases the risk of overheating by decreasing the rate of heat loss”, and weighted blankets, weighted sleepers and weighted swaddles are all ruled out by name.
Disagreement 2 of 4 — a six-month window
In the same room: six months, or twelve?
This one is unusual because the disagreement is not between two institutions. It is inside one document, and it is measurable.
Published stop point
Source
In their words
6 months
The Lullaby Trust
“Babies should always be in the same room as you for the first six months for sleep, day and night.”
6 months
AAP 2022 policy statement (level A)
“It is recommended that infants sleep in the parents’ room, close to the parents’ bed, but on a separate surface designed for infants, ideally for at least the first 6 mo.”
12 months
AAP 2022 policy statement (same document)
“Room sharing without bed sharing is protective for the first year of life, and there is no specific evidence for when it might be safe to move an infant to a separate room before 1 year of age.”
12 months
AAP 2022 technical report
“The AAP recommends room sharing, because this arrangement decreases the risk of SIDS by as much as 50%.”
One source stops recommending at6 monthsThe Lullaby Trust, and the AAP’s own level-A recommendation says “ideally for at least the first 6 mo”.
The same source calls it protective to12 months“protective for the first year of life, and there is no specific evidence for when it might be safe to move an infant to a separate room before 1 year of age”.
That is a 6-month window in which the published statements do not say the same thing. Read carefully, they are not contradictory — a minimum and a protective range can coexist — but a parent who is told “six months” and a parent who is told “a year” are being given different advice, and both sentences are published. The AAP’s technical report gives the scale behind the longer figure: room sharing “decreases the risk of SIDS by as much as 50%”, and the rates of sleep-related deaths are highest in the first six months, so room sharing during that window is described as especially important. It also states that infants sleeping in a separate room are “2.75 to 11.5 times more likely to die suddenly and unexpectedly than infants who are room sharing without bed sharing”. This page reports all of it and picks no boundary for you.
Disagreement 3 of 4 — two answers in one abstract
Swaddling: the same paper publishes both a null result and a significant one.
Pease A, Fleming PJ, Hauck FR, Moon RY, Horne RSC, L’Hoir MP, Ponsonby A-L, Blair PS. Swaddling and the Risk of Sudden Infant Death Syndrome: A Meta-analysis. Pediatrics. 2016;137(6):e20153275. Both numbers below are from its abstract, and they point in different directions.
Published estimate
Odds ratio
95% confidence interval
All four included studies, random effects
1.58
0.97–2.58 — INCLUDES 1.0
Sensitivity analysis, UK study removed, fixed effects
1.38
1.05–1.8 — EXCLUDES 1.0
One interval contains 1.0 and the other does not. The pooled result across all four studies is 1.58 with an interval of 0.97–2.58, which includes 1.0 — so as published, the headline pooled estimate does not reach statistical significance. The sensitivity analysis with the UK study removed is 1.38 with an interval of 1.05–1.80, which excludes 1.0. Removing a study is what made the result significant, and both figures appear in the same abstract. The paper is also explicit that it is working with very little: four studies out of 283 screened, with “imprecise definitions of swaddling, and difficulties controlling for further known risks”.
And the risk is not only about position, though position dominates it.
Where the swaddled baby was placed for sleep
Odds ratio
Interval
Placed on the front (prone)
12.99
4.14–40.77
Placed on the side
3.16
2.08–4.81
Placed on the back (supine)
1.93
1.27–2.93
The elevated estimate on the back is the part most swaddling advice leaves out. “Swaddling risk varied according to position placed for sleep; the risk was highest for prone sleeping (OR, 12.99 [95% CI, 4.14-40.77]), followed by side sleeping (OR, 3.16 [95% CI, 2.08-4.81]) and supine sleeping (OR, 1.93 [95% CI, 1.27-2.93]).” Placed on the front the odds ratio is 12.99 and placed on the back it is still 1.93 with an interval that does not include 1.0. The paper adds a dose-response finding with age: “Limited evidence suggested swaddling risk increased with infant age and was associated with a twofold risk for infants aged >6 months.”. So the published risk signal gets stronger as the baby gets older — and that is worth holding next to the stop rule below, because the advice stops swaddling well before the age at which the published risk is highest.
The AAP’s own recommendation is about efficacy, not about safety.
What the AAP recommends
“There is no evidence to recommend swaddling as a strategy to reduce the risk of SIDS.”
Level C recommendation. Source: AAP 2022 policy statement, Table 2. This says there is no evidence swaddling reduces SIDS risk. It is not the same claim as “swaddling is safe”, and the same abstract reports an increased risk when a swaddled baby is placed on the back.
Where both sources agree completely
“When an infant exhibits signs of attempting to roll (which usually occurs at 3–4 mo but may occur earlier), swaddling is no longer appropriate because it could increase the risk of suffocation if the swaddled infant rolls to the prone position.”
“Once a baby shows signs of rolling, stop swaddling them with their arms wrapped inside the material. This is because they could roll onto their tummy and not be able to roll back again as they can’t use their arms.”
Sources: AAP 2022 policy statement (3–4 months, or earlier); The Lullaby Trust — swaddling.
So the disagreement is about the evidence, and the agreement is about when to stop. One meta-analysis publishes a null headline and a significant sensitivity analysis; the AAP declines to recommend swaddling as a risk-reduction measure without calling it unsafe; and both the AAP and the Lullaby Trust say the same thing without qualification about the off-ramp — at the first sign of rolling, with the arms wrapped in, it stops. The Lullaby Trust adds two situations where it says never: bed-sharing, and a baby with an infection or a fever. This page gives no swaddling instruction of its own.
Disagreement 4 of 4 — two numbers, two baselines
Fifty times, or more than ten? Both are published, and they are not comparable.
This is the one where a reader is most likely to be misled by picking a side, because the two published numbers look like a contradiction and are not one.
50× — The Lullaby Trust
“You should never sleep with your baby on a sofa or armchair, this increases the risk of SIDS by 50 times.”
Measured against the general risk of SIDS.
“More than 10 times the baseline risk of parent–infant bed sharing.” — AAP 2022 policy statement
Classified in the AAP’s own risk tiers in the “more than 10 times” band, alongside bed sharing with someone impaired by fatigue, sedating medication, alcohol or drugs, and bed sharing with a smoker.
Measured against the risk of parent-infant BED sharing, not against SIDS generally.
These two multipliers cannot be compared with each other, and this page will not do it for you. One is measured against the general risk of SIDS and the other against the risk of parent–infant bed sharing, so subtracting them or preferring one is an arithmetic mistake rather than a judgement. What the two sources state identically, without any hedging at all, is the instruction: Never fall asleep with a baby on a sofa or armchair. Neither source hedges on this, and it is the highest risk tier either of them publishes. The AAP is equally plain that it is “unable to recommend bed sharing under any circumstances”, while noting that falling asleep with a baby in the adult bed is “relatively less hazardous (but still not recommended)” than on a sofa or armchair — which is a ranking of two bad options, not an endorsement of either.
Why this is worth a section rather than a footnote. The Lullaby Trust published the 50× figure alongside the survey that produced it: of more than 8,500 parents, 76% had co-slept at some point, and over 40% had done so in dangerous circumstances such as on a sofa — with 25% having done so more than once. Their stated reason for publishing is that “if they are told not to co-sleep they will then feel they cannot discuss what actually happens”. The published instruction for that reality is preparation rather than a promise: “any time you think you might fall asleep with your baby, move them to a clear, flat, firm sleep surface.”
Every published answer that applies, with its source
Check your setup against the published guidance.
Enter the date of birth and your room temperature. The checker places the reading against both published ranges without recommending one, reports which published room-sharing stop point your baby has passed, applies the published swaddling stop rule, states the published risk tier for the sleep surface you pick, reports the published rolling risk if your baby is in the 4–12 month band, and names every published risk factor you tick with the source for each. It never tells you your setup is safe.
7. Tick anything on the published risk lists that applies
Only what applies today. Nothing is scored or counted for you — the result names what you ticked and the source that publishes it.
The tension inside one document
He rolls onto his tummy now. The AAP allows it and flags it in the same paragraph.
This is the part of the published guidance parents most often quote one half of, so here are both halves, from the same source, in the order they appear.
The permission
“Infants who can roll from supine to prone and from prone to supine can be allowed to remain in the sleep position that they assume.”
Source: AAP 2022 technical report. The report gives the reason the question is asked at all: 6% and 12% of 16- and 23-week-old infants placed on their back or side were found on the front, rising to 14% and 18% among infants 24 weeks and older.
The finding, three sentences later
“One study analyzing sleep-related deaths reported to state child death review teams found that the predominant risk factor for sleep-related deaths in infants 4 to 12 months of age was rolling into objects in the sleep area.”
“Thus, parents and caregivers should continue to keep the infant’s sleep environment clear of everything but a fitted sheet.”
Source: AAP 2022 technical report. The same document also still recommends that “all infants continue to be placed supine until 1 year of age”, because the data on when prone sleeping becomes safe are lacking.
Being left where they land is not the same as being placed there. That distinction is the whole published position: the AAP allows an infant who can roll both ways to remain in the position they assume, and in the same document states that for infants aged 4 to 12 months the predominant risk factor was rolling into objects in the sleep area. The resolution both sources give is the same one, and it is about the space rather than the baby — keep it clear of everything except a fitted sheet. So the useful action when a baby starts rolling is not a nightly vigil and not a change of position: it is a final pass over the cot that removes the things a roller can end up against.
Printable
A safe-sleep check sheet for the people who share the care.
Most published risk factors are about a setup rather than a symptom, so they are checkable by anyone who puts the baby down — a grandparent, a night nanny, a nursery, whoever has them on a Tuesday. This sheet is the eight rules above turned into something each carer can tick once, with room for the one thing most handovers miss: which of them has actually been told.
Safe sleep check sheet — one per carer
Every line below is one of the rules the AAP and the Lullaby Trust both publish. Tick it only if it is true right now, at this sleep, on this surface.
#
Rule — as both sources publish it
OK
1
Placed on the back for this sleep
2
Firm, flat surface — nothing inclined, tilted or propped
3
Clear space — fitted sheet only, no soft objects, no loose bedding
4
Their own sleep space, in the same room as the adult
5
Not on a sofa, armchair or any soft surface
6
No smoking, and no one in the sleep space who smokes
7
Not too hot — head uncovered, no hat indoors, no weighted items
8
Not placed on the side, and not propped on the side
Baby’s date of birth: ____________ · Carer’s name: ____________________ · Has this carer been shown the position rules? yes / no · Number to call with a question: ____________________
Note for a swaddled baby: both sources say to stop at the first sign of rolling, with the arms wrapped inside the material. Note for a baby who rolls both ways: keep the space clear of everything except a fitted sheet, and still place them on the back.
Questions dads actually ask
The honest answers.
My baby sleeps fine on his front. Why does it matter now?
Because the published evidence is not about how well a baby sleeps in a position, it is about risk, and the AAP’s technical report gives both halves of the problem. Being placed on the front carries an odds ratio the report puts at 2.3–13.1. And the risk is not only for babies who always sleep on their front: the report states that infants “unaccustomed to the prone position and are placed prone for sleep are also at greater risk than those usually placed prone”, with adjusted odds ratios of 8.7–45.4. The Lullaby Trust publishes the same point in plain language: “The risk of SIDS is particularly high for babies who are usually placed on their back to sleep but are sometimes placed on their front or side.” That is why both sources say the same thing with the same emphasis: back to sleep for every sleep, by every caregiver, including the ones who do not know your routine.
Is 68 degrees the right temperature?
It is the only number inside both published ranges, and that is a fact about the ranges rather than a recommendation. The Lullaby Trust publishes 16–20 °C, which is 60.8–68 °F. Two large US-facing sources publish 68–72 °F, which is 20–22.2 °C. The UK range ends exactly where the US range begins, because 20 °C is 68 °F. So the two published ranges do not overlap: they touch at a single point. Meanwhile the AAP, the source both numbers are usually attributed to, publishes no temperature figure at all — its recommendation is “Avoid overheating and head covering in infants”, with no degree value anywhere in the policy statement or the technical report. The practical reading, which is the sources’ own, is that the number is a guide and the baby is the measurement: check the chest or the back of the neck, and if the skin is hot or sweaty, remove a layer.
Should I keep the monitor on all night to check he’s breathing?
The AAP is unusually direct about this one, and it is a level-A recommendation: “Do not use home cardiorespiratory monitors as a strategy to reduce the risk of SIDS.” Its technical report adds that direct-to-consumer heart rate and pulse oximetry devices are designated by the FDA as consumer wellness devices, are not intended to prevent sleep-related deaths, and “their use may also give the family a false sense of security regarding the risk of sleep-related death”. The Lullaby Trust makes the same point about devices generally: “There are no devices on the market that can replace a parent or carer being in the same room as baby for safer sleep.” A monitor is a device you chose, not a published risk-reduction measure, and nothing on this page turns it into one.
Do I have to keep him in our room for six months or twelve?
This is one of the genuine seams, and the two published statements are not the same. The Lullaby Trust says babies “should always be in the same room as you for the first six months”. The AAP says “ideally for at least the first 6 mo” and then, in the same document, that room sharing is “protective for the first year of life, and there is no specific evidence for when it might be safe to move an infant to a separate room before 1 year of age”. So one source stops recommending at six months and the same source says it is protective to twelve, with no evidence behind stopping earlier. That is a six-month window in which the published statements do not say the same thing, and the page reports both rather than picking the convenient one. The AAP’s own technical report gives the scale: room sharing decreases the risk of SIDS by as much as 50%, and the rates of sleep-related deaths are highest in the first six months.
Is swaddling bad? My mum swears by it.
The published answer is more interesting than a yes or no, and this is the one place where a single paper publishes two different answers in the same abstract. The Pease et al. meta-analysis in Pediatrics reports a pooled age-adjusted odds ratio of 1.58 with a 95% confidence interval of 0.97–2.58 — an interval that includes 1.0, which means the headline pooled estimate is not statistically significant. Then, in the same abstract, removing the UK study gives an odds ratio of 1.38 with an interval of 1.05–1.80, which does not include 1.0. Removing a study turned a non-significant result into a significant one. The AAP’s own recommendation is level C and is about efficacy rather than safety: “There is no evidence to recommend swaddling as a strategy to reduce the risk of SIDS.” That is not the same claim as “swaddling is safe”, and the same abstract reports an increased risk for swaddled babies even when they are placed on their back (OR 1.93, CI 1.27–2.93). What both sources agree on absolutely is when to stop: the AAP says swaddling “is no longer appropriate” once an infant shows signs of attempting to roll, usually at 3–4 months, and the Lullaby Trust says to stop with the arms wrapped in at the first sign of rolling. The page reports all of it and recommends nothing.
He rolls onto his tummy now. Do I roll him back?
The AAP answers this one directly, and then complicates it in the next sentence, which is why it is on this page. First: “Infants who can roll from supine to prone and from prone to supine can be allowed to remain in the sleep position that they assume.” Then, in the same document: “the predominant risk factor for sleep-related deaths in infants 4 to 12 months of age was rolling into objects in the sleep area.” The same source allows the roll and identifies what the baby rolls into as the leading risk at that exact age. The published resolution is the sentence that follows it, and it is the one instruction both sources give: “keep the infant’s sleep environment clear of everything but a fitted sheet”. The Lullaby Trust takes the same position from the parent’s side: once your baby can move themselves both ways they will find their own position, and “the first few times they roll onto their tummy, you might like to gently turn them back, but don’t feel you have to get up all night to check on them”. Note what the AAP does not do: it still recommends placing them on the back for every sleep until 1 year. Being left where they land is not the same as being placed there.
We fell asleep on the sofa with him. How bad is that?
It is the highest risk tier either source publishes, and both say so without hedging. The Lullaby Trust: “You should never sleep with your baby on a sofa or armchair, this increases the risk of SIDS by 50 times.” The AAP, in its technical report, lists “bed sharing on a soft surface, such as a waterbed, old mattress, sofa, couch, or armchair” in its “more than 10 times the baseline risk” tier. Those two multipliers are not measured against the same baseline — the Lullaby Trust’s 50× is against the general risk of SIDS and the AAP’s 10× is against the risk of parent-infant bed sharing — so they cannot be compared with each other and this page does not. What the page can tell you is what the Lullaby Trust’s own survey found, because it is the reason they publish the number: of over 8,500 parents, 76% had co-slept at some point and over 40% had done so in dangerous circumstances such as on a sofa. It is common, it is dangerous, and the published advice is to plan for it rather than to assume it will not happen — “any time you think you might fall asleep with your baby, move them to a clear, flat, firm sleep surface.”
What actually counts as a clear sleep space?
The AAP’s instruction is the most specific published version: a firm, flat, non-inclined surface “covered by a fitted sheet with no other bedding or soft objects”, and it says why in the technical report — “airway obstruction from soft objects or loose bedding is the most common mechanism for accidental infant suffocation”. The same document rules out weighted blankets, weighted sleepers and weighted swaddles outright, and rules out bumper pads. It recommends dressing the baby in layers instead of using blankets. Surfaces with inclines of more than 10 degrees are called unsafe for infant sleep, which is why the flat part is not a stylistic preference.
Is a box or a drawer fine if we have nothing else?
The AAP added this to its 2022 statement and the answer is a real, narrow yes. In an emergency, “an alternative device with a firm, flat, noninclined surface (eg, box, basket, or dresser drawer) with thin, firm padding may be used temporarily. However, this alternative device should be replaced as soon as a CPSC-approved surface is available.” It adds that the device should contain no pillows or loose or soft objects. The AAP also states separately that there is inadequate evidence to recommend for or against most of these alternative surfaces, which is why the emergency framing matters: it is a temporary stand-in, not an option.
Where does the site get the temperature number from, and why do you not just give me one?
Because the source the number is usually attributed to does not publish one. This run counted the strings: the AAP 2022 policy statement and its technical report contain no temperature value in Celsius, no value in Fahrenheit, and no range — the recommendation is “Avoid overheating and head covering in infants”. The two ranges on this page are published by the sites that publish them, each in its own unit, and this page converts only to let you compare them, showing the arithmetic rather than a recommendation. Inventing a single authoritative number would mean claiming a consensus the sources do not have — which is the same failure this page exists to describe.
Figures
Every number on this page, and where it comes from.
Figure
What it is
Source
8
Rules on which the two sources do not disagree at all, quoted from both
AAP 2022 / Lullaby Trust
16–20 °C
The room-temperature range published for a UK audience, with no equivalent in the AAP document
The Lullaby Trust
68–72 °F
The room-temperature range published by the two US-facing sources, attributed to the AAP
Sleep Foundation / WebMD
60.8–68 °F
The Lullaby Trust range converted, for comparison only — shown so a reader can check the seam by hand
derived from 16–20 °C
20–22.2 °C
The US range converted, for comparison only
derived from 68–72 °F
0
Room-temperature numbers published in the AAP policy statement or its technical report
AAP 2022 policy statement + technical report
1
Temperature value inside both published ranges — 68 °F, which is exactly 20 °C
derived from the two published ranges
6
Months, the window in which the two published room-sharing statements do not agree
Lullaby Trust (6) vs AAP (protective for 12)
50%
The reduction in SIDS risk the AAP attributes to room sharing without bed sharing
AAP 2022 technical report
1.58 (0.97–2.58)
Swaddling pooled odds ratio, all four studies — interval INCLUDES 1.0
Pease et al., Pediatrics 2016
1.38 (1.05–1.80)
Swaddling odds ratio with the UK study removed — interval EXCLUDES 1.0
Pease et al., Pediatrics 2016
12.99
Swaddling risk when the swaddled baby is placed on the front (OR)
Pease et al., Pediatrics 2016
1.93
Swaddling risk when the swaddled baby is placed on the back (OR) — elevated on the back too
Pease et al., Pediatrics 2016
8.7
Risk for infants placed on the side and found on the stomach (OR)
AAP 2022 technical report
3–4 months
The age at which the AAP says swaddling is no longer appropriate, at the first signs of rolling
AAP 2022 policy statement
>6 months
The age at which the swaddling meta-analysis reports a twofold risk
Pease et al., Pediatrics 2016
4 to 12 months
The age band in which rolling into objects was found to be the predominant risk factor
AAP 2022 technical report
as much as 50%
Decrease in SIDS risk from room sharing, per the AAP
AAP 2022 technical report
Sources
Where every claim on this page comes from.
Every figure above is a restatement of one of these. Where a source says something this page states, the words are quoted; where the sources disagree, both are shown.
This page restates published guidance from the sources above and is general information, not medical advice for your baby; your care team’s instructions override it. This page is not medically reviewed and does not diagnose anything. It cannot tell you your baby is safe, and no combination of the answers above makes it safe to change any of the eight rules. See our Editorial standards and corrections.
Read next
The pages that answer the questions this one raises.
Safe sleep touches almost every other part of the first year, and three of this site’s pages exist because the published guidance runs out exactly where a parent is standing.
Crying
Witching hour crying for dads
Evening crying peaks in the same early months as the highest sleep-related risk, and the published cry curve is routinely misquoted as a single figure. The published bands by age.
Feeding
Reflux and spitting up for dads
The reflux guidance says to hold a baby upright after a feed — and then forbids the obvious extension of that advice at sleep, for the reason this page is about. Where the positioning advice collides.
Sleep
4-month sleep regression for dads
The 4-month regression is usually described as a sleep problem and it is also the month the AAP says the incidence of SIDS begins to decline and rolling becomes common. What changes at 4 months.
Temperature & illness
Baby fever: when to call
Overheating and fever are two different published questions with two different thresholds, and an armpit reading is not equivalent to a rectal one. The published call thresholds by age.
Free tool
Wake window calculator
A wake window is about how long a baby can comfortably stay awake, not about how long to leave them asleep — and getting overtired is what most often ends in an unsafe fall-asleep-on-the-sofa. Work out the published window.
Free tool
Newborn diaper output checker
Feeding enough is measured by diaper output and growth rather than by how much appears on a bib — and a baby who is not feeding well is a published reason to call. Check the published counts.
Caregivers
Baby caregiver handoff template
Whoever puts the baby down next needs the position rules, and a handoff is where a routine quietly differs. The handoff sheet.
Hub
Newborn care tools for dads
Every sleep, feeding, diaper and checkup surface on this site in one place, including the free printable sheets. The newborn hub.