Your Results
Your educational estimate will appear here.
The "1 in X" figure is the most human way to read this estimate. It means: out of every X births with a similar sleep profile, roughly 1 may be affected by SIDS. Your current estimate is 1.00× the U.S. baseline.
Context matters. The U.S. average is about 1 in 2,381 births (0.42 per 1,000). Even at elevated relative risk, the absolute numbers remain small — but every preventable factor is worth correcting.
- Population estimate, not a diagnosis. This educational model summarizes published associations; it can’t predict an individual outcome.
- What changes the number? Sleep position/surface, bed/couch sharing, soft bedding/head covering, smoke exposure, overheating, breastfeeding, pacifier use, prematurity/low birth weight, and age (highest around 2–4 months).
- How to act on it: See Evidence-Based Ways to Reduce Risk for clear, practical steps.
Your estimated risk based on these answers
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U.S. average is 1 in 2,381 births
1.00× the baseline · 0.42 per 1,000 births
Risk by Baby's Age (1–12 Months)
Your calculated risk (per 1,000) if all other inputs remain the same.
Evidence-Based Ways to Reduce Risk
- Always place baby on the back to sleep. Avoid placing baby on their stomach or side.
- Bare, firm, flat sleep surface. No pillows, comforters, loose blankets, bumpers, or stuffed toys.
- Room-share, don’t bed-share. Same room, separate safe surface.
- Offer a pacifier at sleep.If breastfeeding, wait until it's well established before introducing one.
- Smoke-free pregnancy and home. Avoid alcohol and drugs while caring for the infant.
- Avoid overheating. One extra layer at most; never cover the head indoors for sleep.
Key Sources Used in This Calculator
- CDC SUID/SIDS data & trends (baseline risk and definitions).
- AAP 2022 Safe Sleep evidence base & policy.
- Bed-sharing individual-level meta-analysis (Carpenter 2013).
- Pacifier protective effect (Hauck 2005 meta-analysis).
- Breastfeeding protective effect (Hauck 2011 meta-analysis).
- Maternal smoking (dose-response; prenatal & postnatal exposure).
- Prematurity & low birth weight as risk factors (NICHD).
- Soft/loose bedding & head covering risks.
- Inclined sleepers associated with higher SUID risk (CPSC).
- Additional epidemiology & practice-adherence context (AAP/CDC summaries).
About This Tool (Important Disclaimers)
Educational use only. This estimator summarizes published associations (odds ratios/relative risks) for population-level risk. It does not account for all factors and cannot predict an individual infant’s outcome. It is not medical advice, diagnosis, or treatment. Always follow guidance from your pediatrician, the American Academy of Pediatrics (AAP), and your local public health authorities.
Method caveats. Studies vary in design, populations, adjustments, and eras; associations do not prove causation. We use conservative, capped multipliers and combine them multiplicatively with safeguards to avoid exaggerated outputs. Baseline risk uses recent CDC data (SIDS deaths per live births in the U.S.).
If you’re worried now (e.g., unsafe sleep occurred, baby is hard to rouse, color change, breathing concern), seek care immediately and discuss safe sleep with your pediatrician.
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