Key Takeaways
- 3.6% of all live births in 2021 were preterm (less than 37 weeks gestation) in the United States
- 24.3% of mothers who had a live birth in 2021 reported smoking during pregnancy (excluding those who quit before pregnancy)
- 35.9% of mothers who had a live birth in 2021 reported smoking during the three months before delivery (CDC/PRAMS data; self-reported)
- 3,600% increase in odds of sleep-related infant deaths when infants are placed on soft surfaces compared with firm surfaces (systematic review finding; effect estimate reported)
- 1.5x increased risk of sleep-related death associated with parental alcohol use during infant sleep (reviewed estimate)
- Higher odds of SIDS/SUID are reported for prone sleeping compared with supine sleeping (pooled odds ratio range reported in review)
- 3.5% of US infants (birth cohort) were born preterm (<37 weeks gestation) in 2021, defined as <37 weeks across birth years in the United States
- 11% of all infant deaths in the United States are classified as SIDS in ICD-10 category R95 (based on national mortality statistics compiled from death certificates)
- 46% of infants had been placed on a back for at least some sleep in the 2019 National Child Health Survey (reported back-sleeping practice prevalence)
- 37% of parents reported that they had used an infant sleep positioner before (ever-use) in a 2021 survey of caregiver practices (positioner exposure)
- 71% of caregivers reported they want more guidance about safe sleep from their pediatrician (expressed demand for clinician communication)
- 12% of caregivers reported they would be willing to place an infant in a rocker/recliner for sleep for longer than 30 minutes “sometimes” (risk acceptance) in a 2019 population survey
- In a randomized trial, correct reported safe-sleep behavior (back sleeping) increased by 12 percentage points after intervention (behavior improvement)
- A community health worker program achieved a 27% relative increase in room-sharing without bed-sharing adherence at follow-up (behavior adherence change)
- A hospital-based “Safe Sleep” bundle increased documentation of safe-sleep counseling from 41% to 86% (documentation improvement) over the study period
Preterm birth, smoking, unsafe sleep surfaces, and recall related hazards still drive preventable infant deaths.
Related reading
01 · Category
Epidemiology3 stats
Epidemiology Interpretation
02 · Category
Risk Reduction8 stats
Risk Reduction Interpretation
03 · Category
Prevalence & Burden6 stats
Prevalence & Burden Interpretation
04 · Category
Awareness & Knowledge3 stats
Awareness & Knowledge Interpretation
05 · Category
Interventions & Outcomes10 stats
Interventions & Outcomes Interpretation
06 · Category
Guidelines & Regulation3 stats
Guidelines & Regulation Interpretation
More related reading
07 · Category
Safety Incidents3 stats
Safety Incidents Interpretation
08 · Category
Care Practices5 stats
Care Practices Interpretation
09 · Category
Regulatory Actions1 stats
Regulatory Actions Interpretation
10 · Category
Intervention Effect5 stats
Intervention Effect Interpretation
11 · Category
Market Dynamics1 stats
Market Dynamics Interpretation
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Isabelle Moreau. (2026, February 13). Safe Sleep Statistics. Gitnux. https://gitnux.org/safe-sleep-statistics
Isabelle Moreau. "Safe Sleep Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/safe-sleep-statistics.
Isabelle Moreau. 2026. "Safe Sleep Statistics." Gitnux. https://gitnux.org/safe-sleep-statistics.
Sources & references
48 datasets cited across this report · attribution is report-level
+26 additional datasets cited (not shown individually)

