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
Epidemiology
Epidemiology Interpretation
Risk Reduction
Risk Reduction Interpretation
Prevalence & Burden
Prevalence & Burden Interpretation
Awareness & Knowledge
Awareness & Knowledge Interpretation
Interventions & Outcomes
Interventions & Outcomes Interpretation
Guidelines & Regulation
Guidelines & Regulation Interpretation
Safety Incidents
Safety Incidents Interpretation
Care Practices
Care Practices Interpretation
Regulatory Actions
Regulatory Actions Interpretation
Intervention Effect
Intervention Effect Interpretation
Market Dynamics
Market Dynamics Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
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.
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