[Mobility Exposure Measures in Serious Road Traffic Injuries in Madrid, Spain]

The search of suitable indicators for estimating the risk of road traffic injuries is nowadays a relevant topic. The objective of this study was to carry out a comparative description of mortality and inhospital morbidity by age and sex, using population rates and mobility exposure related indicators.

Cross sectional study in the Community of Madrid, 2003-2005. Population rates and mortality and morbidity rates per billion of persons-kilometers travelled and per million of persons-hours travelled were estimated and compared by age and sex. The Minimum Basic Hospital Discharge Data Set, the 2004 Mobility House Survey of the Community of Madrid and the mortality register of the Statistic Institute of the Community of Madrid were used as information sources.

7,413 hospital discharges and 1,046 deaths were identified. Morbidity and mortality population rates in men were 62.24 and 9.20 respectively, and in women 23.80 and 2.97 per 100,000 inhabitants, being the highest rates those for men aged 16-24 years (119.27 hospital discharges and 12.00 deaths per 100,000 inhabitants). Women of 65 years and older showed the highest mobility related rates: 649.78 hospital discharges and 96.72 deaths per 10(9) km, and 13.11 hospital discharges and 1.95 deaths per 10(6) travelled hours.

Morbidity and mortality were higher in men for the three indicators. Rates referred to mobility exposure, faced to population rates, decrease mortality and morbidity due to road traffic injuries in men and young ages and increase both in advanced ages.