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Children in car crashes: analysis of data for injury and use of restraints
C Johnston1, F P Rivara, R Soderberg
1Harborview Injury Prevention and Research Center, School of Medicine, University of Alabama at Birmingham 35233.
Insights
Child car restraints significantly reduce motor vehicle injuries. Toddlers aged 3 experience higher injury rates due to less restraint use, highlighting the need for better safety measures.
Area of Science:
- Pediatric Injury Prevention
- Traffic Safety Research
- Public Health
Background:
- Motor vehicle crashes are a leading cause of injury and death for children.
- The effectiveness of various child restraints in mitigating injuries is a critical public health concern.
- Understanding age-specific injury risks and restraint usage patterns is essential for targeted interventions.
Purpose of the Study:
- To evaluate the impact of car restraints on motor vehicle injury rates in children aged 0-14 years.
- To identify risk factors associated with child injuries in car crashes, including restraint use, age, and seating position.
- To compare the effectiveness of different types of restraints for various age groups.
Main Methods:
- Analysis of a probability sample of police-reported car crashes in the U.S. (1990-1991).
- Examination of injury rates for passengers under 15 years old.
- Statistical analysis correlating injury rates with restraint usage, child age, and seating position.
Main Results:
- Optimal restraint usage was only 40%; non-use was highest among 10-14 year olds.
- The strongest predictor of injury was non-use of restraints (Adjusted odds ratio 2.7).
- Car seats reduced injuries by 60% for 0-4 year olds, while lap/shoulder belts were 38% effective for 5-14 year olds.
Conclusions:
- 3-year-olds have significantly higher injury rates than infants due to lower restraint use.
- Current adult restraints are less effective for school-aged children compared to car seats for preschoolers.
- Increased usage of existing restraints is crucial, and development of better restraints for older children is recommended.
Objective:
To determine the effect of car restraints on motor vehicle injury rates for children aged 0 to 14 years.
Methods:
A probability sample of all police-reported car crashes in the United States in 1990 and 1991 was analyzed for injury rates of passengers aged less than 15 years in relation to restraint usage, age, and seating position.
Results:
Optimal restraint usage (defined as car seats for children 0 to 4 years old and lap shoulder belts for children 5 to 14 years old) was 40%. The use of the car seat was 76% for infants (0 to 12 months old) and 41% for toddlers (1 to 4 year olds). The non use of a restraint was highest for 10 to 14 year olds (43%). The rate of involvement in car crashes for all children was 21.4 (per 1000/yr). The highest rate was the 14 year olds with 29.6 followed by 2 year olds with 26.5. Injury rates were 4.76 (per 1000/yr) for all children. The lowest rate was 2.91 for infants but increased to 4.78 for 3 year olds. The single strongest risk factor for injury was the non use of a restraint. (Adjusted odds ratio 2.7; 95% CI 2.4 to 3.0.) The risk factor for injury for the front seat was 1.5 (95% CI 1.4 to 1.7). Use of the car seat reduced injuries by 60% for 0 to 4 year olds, whereas the lap shoulder harness was only 38% effective for 5 to 14 year olds (P < or = .001) Injury rates of unrestrained 0 to 4 and 5 to 14 year olds were similar.
Conclusions:
Greater involvement in car crashes and less use of car restraints explains the 64% higher rate of injury for 3 year olds than for infants. It is time to target the toddlers. Restraints designed for adults are not as effective for the school age child as car seats are for the preschool child. A better restraint for the school age child should be designed and evaluated. Meanwhile, increased usage of current restraints must be encouraged, as they substantially reduce injuries.