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Childhood accidents, family size and birth order
Insights
Children in larger families, especially those with 3 or more children, face a higher risk of hospitalization due to accidents. This risk is particularly pronounced with older siblings present, impacting both preschool and school-aged children.
Area of Science:
- Pediatrics
- Public Health
- Injury Prevention
Background:
- Family size is a potential factor influencing child injury risk.
- Previous research has not fully elucidated the specific impact of sibling number on accident-related hospitalizations.
Purpose of the Study:
- To investigate the association between the number of children in a household and the risk of accidents requiring hospitalization.
- To determine if the age distribution of siblings influences accident risk.
Main Methods:
- Longitudinal study analyzing data from 10,394 children surveyed at ages 5 and 10.
- Statistical analysis to assess the relationship between household size and accident hospitalization rates.
Main Results:
- Living in households with 3+ children during preschool years increases hospitalization risk.
- Households with 4+ children elevate accident hospitalization risk for school-aged children.
- The presence of older siblings significantly increases accident risk compared to younger siblings.
Conclusions:
- Larger family size, particularly with multiple older children, is associated with a higher risk of hospitalized accidents.
- Environmental factors within larger families likely contribute to this increased risk.
- While overall accident frequency and repeat injuries were not linked to family size, severe injuries requiring hospitalization were.
Abstract:
The relationship between accidents and number of children in the household was assessed in 10,394 children surveyed at ages 5 and 10 years. The analyses suggest that living in a household with 3 or more children during the preschool period increases a child's risk of experiencing accidents that result in hospitalization; and that living in a household with 4 or more children increases the risk of such accidents to school-age children. The number of older rather than younger children had the greatest impact on accident risk. The observed odds ratios suggest that children with 4 or more siblings have 80% to 90% more injuries resulting in hospitalization than only children. The proportions of children with one or more accidents (regardless of the place of treatment) and with repeat accidents were unrelated to family size. Environmental differences between families of varying size accounted for the association with hospitalized accidents.