The Effects of Body Mass Index and Seatbelt Use on Pediatric Chest and Abdominal Injuries after Motor Vehicle Collisions

Background Motor vehicle collisions (MVCs) are a major cause of pediatric morbidity and mortality. However, the effect of body mass index (BMI) and seatbelt use on thoracic injuries and outcomes in pediatric patients with rib fractures remains unexplored. We aim to assess how seatbelt use and BMI affect thoracic injuries and outcomes in pediatric patients who sustained ≥3 rib fractures following an MVC. Methods The Trauma Quality Improvement Program (TQIP) database (2013-2017) was queried for pediatric patients (8-17 years and >4 feet 9 inches tall) admitted secondary to MVCs, with ≥3 rib fractures and all non-thoracic Abbreviated Injury Scale ≤2. Patients were then divided by Injury Severity Score (ISS) into low (<15) and intermediate-severe (≥15) groups, which were further subdivided according to seatbelt use and BMI. Logistic and linear regression was performed to assess the effects of seatbelt use and BMI on outcomes. Results Seatbelt compliance varied from 39.6 to 50.7%. Belted patients (intermediate-severe ISS) had a reduced hospital length of stay (HLOS), intensive care unit length of stay(ICU-LOS), and mechanical ventilation time but had increased odds of splenic laceration vs. unbelted patients (aOR = 2.46, 95% CI: 1.03-5.93, P = .044). Obese patients (low ISS) had lower incidences of hemothorax, pneumothorax, pulmonary contusion, splenic laceration, and liver injury compared to normal-weight patients. Overweight patients (intermediate-severe ISS) had a significantly reduced ICU-LOS vs. normal-weight patients (β = −.17, 95% CI: -.33,-.01, = .041). Conclusions Seatbelt use may improve outcomes for pediatric MVC patients with ≥3 rib fractures. Higher BMI may be associated with reduced thoracic injury and decreased ICU-LOS. Effective educational initiatives are needed to increase pediatric seatbelt compliance.

Prevalence of behavioural risk factors for road-traffic injuries among the Iranian population: findings from STEPs 2016

Background To achieve Sustainable Development Goal 3.6 in Iran, we need to have a comprehensive understanding of the distribution of risky behaviours regarding road-traffic injuries at national and sub-national levels. Little is known about the road-use vulnerability patterns of road-traffic injuries in Iran. The aim of this study is to describe the prevalence of self-reported human risk factors in road-traffic injuries using the findings from a large-scale cross-sectional study based on the World Health Organization’s stepwise approach to surveillance of non-communicable diseases (STEPs). Methods A cross-sectional survey study in 2016 assessed the road-use pattern and prevalence of risky behaviours of people more than 18 years old. In this study, we planned to recruit 31 050 individuals as a representative sample at national and provincial levels. In practice, 30 541 individuals (3105 clusters) from urban and rural areas of Iran were selected. Basic socio-demographic data, major behavioural risk factors such as seatbelt and helmet non-compliance, drunk driving and occupant in a car with a drunk driver were assessed through baseline interviews gathered through an Android tablet-based questionnaire. Results The overall prevalence of seatbelt and helmet compliance was 75.2% (95% confidence interval: 74.7–75.7) and 13.9% (13.4–14.5), respectively, at the national level. The prevalence of risk-taking behaviours such as drink driving was 0.5% (0.4–0.6) and for being an occupant in a car with a drunk driver was 3.5% (3.2–3.8). At the provincial level, the highest age-standardized prevalence of seatbelt compliance (89.6%) was almost 1.5 times higher than the lowest provincial prevalence (58.5%). In 63% of provinces, the lowest prevalence of seatbelt compliance was observed among people aged 18–24 years old. Conclusions In Iran, existing disease-prevention and health-promotion programmes should be expanded to target vulnerable subgroups that have more prevalent human risk factors for road-traffic injuries. Further research is required to investigate the context-specific proximal human risk factors and vulnerability patterns in Iran.