Related Experiment Video
Updated: May 2, 2026

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
Published on: September 21, 2017
[Motorcycle accident mortality time trends in Brazil, 1996-2009]
Objective:
To analyze motorcycle accidents mortality trends in Brazil.
Methods:
A descriptive time series study of mortality from motorcycle accidents in Brazil between 1996 and 2009 according to state and age group. The data on mortality were obtained from the National Mortality Information System of Ministry of Health and the population data from the Brazilian Institute of Geography and Statistics. Standardized mortality rates were calculated for the entire period for the country as a whole and for each state. Annual variability in mortality rates was estimated using Prais-Winsten generalized linear correlation.
Results:
Between 1996 and 2009 the mortality rate increased from 0.5 to 4.5 per 100.000 habitants (an increase of 800.0% in mortality rates during the period studied and an average annual increase of 19.0%). High mortality rates in 2009 were observed in the states of Piauí, Sergipe and Mato Grosso. The largest increases were observed in states in the North, Northeast and Midwest of Brazil.
Conclusions:
There was a significant increase in motorcycle accident mortality rates for the country as a whole during the studied period, mainly in states in the Northeast.
More Related Videos
12:15Quantification of three DNA Lesions by Mass Spectrometry and Assessment of Their Levels in Tissues of Mice Exposed to Ambient Fine Particulate Matter
Published on: May 29, 2019
07:46Author Spotlight: Improving Beef Cattle Nutrition and Production with a Focus on Feed Efficiency and Meat Quality Traits Through Advanced Biochemical and Molecular Assays
Published on: July 12, 2024
Related Concept Videos
Relative Risk
Hazard Rate
Hazard Ratio
For example, in a clinical trial...
Introduction To Survival Analysis
The primary goal of survival analysis is to estimate survival time—the time...
Drug Toxicity: Risk factors
Assumptions of Survival Analysis