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Risk factors of sudden infant death in Chinese babies
H H Knöbel1, W S Yang, C J Chen
1Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, R.O.C.
Insights
Social and biologic factors significantly impact sudden infant death risk in Chinese infants. Parental age difference, maternal education, birth order, low birth weight, and prematurity were identified as key risk factors.
Area of Science:
- Pediatrics
- Public Health
- Epidemiology
Background:
- Sudden infant death remains a significant concern globally.
- Understanding the interplay of social and biologic factors is crucial for prevention strategies.
Purpose of the Study:
- To investigate the influence of social and biologic factors on sudden infant death (SID) in a large Chinese population.
- To identify specific risk factors associated with SID in Taiwanese infants.
Main Methods:
- Utilized a population-based cohort study design, merging birth and death certificate data from Taiwan (1988-1992).
- Employed Cox's proportional hazard model for multivariate analysis to estimate relative risks and confidence intervals.
Main Results:
- Parental age difference >10 years increased SID risk (RR 1.8).
- Higher maternal education (college) was associated with elevated risk (RR 1.2), while higher paternal education showed a protective effect (RR 0.8).
- Increased birth order (2nd-4th: RR 1.7; 5th+: RR 2.3), low birth weight (RR 2.3), and prematurity (RR 1.2) were significant risk factors.
Conclusions:
- Biologic and social variables are critical determinants of sudden infant death in Chinese infants.
- Findings highlight the need for targeted interventions considering socioeconomic and obstetric factors.
Abstract:
The influence of social and biologic factors on sudden infant death was studied in a large Chinese population. Data from all birth certificates in Taiwan from 1988 to 1992 were merged with death certificate data for postneonatal deaths from sudden infant death syndrome and suffocation. The Cox's proportional hazard model was used to compute multivariate adjusted relative risk estimates and 95% confidence intervals. Age difference of parents of more than 10 years was associated with a relative risk (RR) of 1.8 (multivariate adjusted, 95% confidence interval (CI) 1.3-2.3). Better than elementary education for the father was protective (adjusted RR 0.8, 95% CI 0.7-1.0, p < 0.05), and college education of the mother elevated the risk (adjusted RR 1.2, 95% CI 1.0-1.4, p < 0.05). Infants born second to fourth had an adjusted RR of 1.7 (95% CI 1.5-1.9), and infants born fifth or higher had a RR of 2.3 (95% CI 1.5-3.4). The multivariate adjusted RR for low birth weight and prematurity were 2.3 (95% CI 1.9-2.8) and 1.2 (95% CI 1.0-1.5), respectively. Data from this 5-year cohort in Taiwan emphasize biologic and social variables as important risk factors of sudden infant death in Chinese babies.