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How common is repeat sudden infant death syndrome?
C J Bacon1, D B M Hall, T J Stephenson
1Glebe House, Danby Wiske, Northallerton, North Yorkshire, UK. chrisandheatherbacon@ukonline.co.uk
Archives of Disease in Childhood
|June 15, 2007
Summary
The risk of sudden infant death syndrome (SIDS) recurring is likely small, despite previous studies suggesting higher rates. Current evidence is insufficient to quantify this risk accurately.
Area of Science:
- Pediatrics
- Epidemiology
- Forensic Pathology
Background:
- Recurrence of sudden infant death syndrome (SIDS) presents diagnostic challenges, often involving considerations of familial disease or homicide.
- Previous studies have reported varying relative risks for SIDS recurrence, creating uncertainty.
Purpose of the Study:
- To evaluate the validity of existing studies on recurrent SIDS.
- To assess the reliability of reported recurrence risks for SIDS.
Main Methods:
- Systematic review of eight English-language studies on recurrent SIDS published since 1970.
- Validity assessment based on accuracy of case ascertainment, adequacy of investigation, and control matching.
Main Results:
- All reviewed studies failed to meet the established validity criteria.
- Methodological flaws in the studies likely led to an overestimation of SIDS recurrence risk.
Conclusions:
- Theoretical grounds suggest a probable increase in SIDS recurrence risk, but current evidence is insufficient for quantification.
- Healthcare professionals should exercise caution when discussing recurrence risks; most families can be reassured that the risk is small.
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