Body Mass Index Does Not Predict Injury Pattern or Outcome After Motorcycle Crash.

Area of Science:

• Traumatology
• Public Health
• Epidemiology

Background:

• The US obesity epidemic affects 42% of the population.
• Obesity's impact on motorcycle collision outcomes is understudied.
• This study investigates obesity's effect on motorcycle collision injury severity and outcomes.

Purpose of the Study:

• To compare injury severity between obese and normal-weight motorcycle collision patients.
• To analyze differences in mortality and hospital length of stay (LOS).
• To examine injury regions and characteristics in relation to body mass index.

Main Methods:

• Retrospective analysis of trauma registries from three Pennsylvania Level 1 trauma centers (2016-2020).
• Obesity defined as body mass index (BMI) ≥ 30 kg/m²; normal weight as BMI 18.5-29.9 kg/m².
• Comparison of Injury Severity Score (ISS), Abbreviated Injury Score (AIS), mortality, and LOS.

Main Results:

• 1,164 patients included: 40% obese, 60% normal weight.
• No significant difference in median ISS (9 vs. 9) or AIS between groups.
• Obese patients were older (median age 45 vs. 38) with higher rates of hypertension and diabetes.

Conclusions:

• Obese motorcycle collision patients showed no differences in injury distribution, severity, or mortality compared to normal-weight individuals.
• Findings contrast with some existing literature suggesting increased LOS for obese patients.
• Further research is needed to fully understand obesity's role in motorcycle collision outcomes.