Trends in helmet use by motorcycle riders in the decades following the repeal of mandatory helmet laws.

Several US states repealed universal motorcycle helmet laws in the 1990s and 2000s. The purpose of this study was to examine national trends in helmet use among adult trauma patients with motorcycle-related injuries. We hypothesized that motorcycle helmet use declined over time. We retrospectively analyzed the National Trauma Data Bank's National Sample Program for 2003-2010. We also obtained data on US motorcycle fatalities reported in the Fatality Analysis Reporting System and population data from the U.S. Census Bureau to calculate motorcycle-related fatality rates over time. A total of 255,914 patients met inclusion criteria, of whom 148,524 (58%) were helmeted. During the study period, helmet use increased from 56% in 2003 to 60% in 2010 (p < 0.001). However, motorcycle-related fatality rates also increased in states with and without universal helmet laws. Nationally, rates of helmet use have increased. However, fatalities due to motorcycle crashes have also increased during the same period.

Post-trauma mortality increase at age 60: a cutoff for defining elderly?

BACKGROUND: There has been an increasing emphasis on identifying elderly trauma patients. However, definitions based solely on age vary widely, ranging from age 55 to 80 years, hampering optimal trauma management for older patients. The goal of this study was to develop an objective, data-driven definition for "elderly" in trauma care by evaluating mortality risk as a function of age. METHODS: We conducted a retrospective analysis of 872,861 adult (≥18 years) patients from the National Trauma Data Bank's National Sample Program from 2003 to 2010. The primary outcome was risk-adjusted in-hospital mortality determined using multivariate logistic regression. Contribution of age to mortality was investigated through step-wise regression and percent of R2 attributable to age. We searched for straight-line trends in mortality rate at each age using the spline function of Statistical Analysis Software. RESULTS: Statistically significant increases in mortality rate were noted at ages 37, 60, and 78. Age was found to contribute 10% to mortality compared with greater than 80% for Glasgow coma scale and injury severity score combined. CONCLUSIONS: Our findings suggest using age 60 years as a data-driven definition of "elderly" in trauma.