Biomedical subjects

Martha Híjar

Publications and source records attributed to Martha Híjar.

3 recordsLinked to original sources

PubMed2004

Road traffic injuries in an urban area in Mexico. An epidemiological and cost analysis.

The objective of this study was to do an epidemiological and costs analysis of the impact of road traffic injuries on the demand for emergency room services at hospitals located in the city of Cuernavaca, Mexico. The studied population included injured people who demanded medical attention at the emergency room for injuries due to events in public places, occurring between February and April 2001. Trained interviewers collected the data at the emergency room, 24h a day. The statistical analysis included simple and bivariate analysis using chi(2) odds ratio (OR), and a confidence interval of 95%. The costs analysis included the expenses during the process of searching for and finding care for injuries. There were 433 injured people, 233 (54%) were victims of road traffic accidents, 72% of crashes, and 28% were injured pedestrian and cyclists. Variables associated with the demand of emergency care due to road traffic injuries in comparison with other accidents, were: severity of injuries (OR 2.60, CI 1.44-4.71), and thorax injury (OR 4.64, CI 1.03-20.89). Pedestrians had higher costs for health care and 80% of them had to pay out-of-pocket (P<0.05). Differences between patients injured by crashes or as a pedestrian, were: age under 14 years (OR 5.9, CI 2.5-13.9), being unemployed (OR 2.1, CI 1.20-3.96), and being an elementary school student (OR 13.9, CI 3.08-63.13). The present study is, so far, the only one in Mexico to include an epidemiological and costs analysis in approaching the problem of road traffic injuries. Similar methods must be used, especially in developing countries, to reduce this important public health problem.

Accidents, Traffic↗

PubMed2003

Pedestrian injuries in Mexico: a multi-method approach.

UNLABELLED: Studies of road traffic injuries should identify social determinants amenable to intervention, and should attend to the problems of individual drivers and pedestrians. This is especially true in developing nations like Mexico, where traffic fatality rates are high and interventions ineffective. OBJECTIVE: Combine qualitative and quantitative methods to analyze pedestrian injuries from motor vehicles in Mexico City, and identify their social, contextual and environmental determinants. Methods included (1). a cross-sectional analysis of mortality, producing crude and specific mortality rates and standardized mortality ratios (95% CI) by region; (2). Spatial analysis using a geographic information system to generate maps at different aggregation levels; (3). Observation with cameras to identify traffic patterns, spaces, behaviors, and patterned violations of regulations; and 4). Semi-structured in-depth interviews of pedestrians and drivers involved in an accident. RESULTS: The overall crude mortality rate was 7.14/100000, (CI 6.85-7.42), with differences by sex and region. The highest concentration of deaths was observed in 10 neighborhoods, at specific types of street environments. The high-risk environments have wide avenues with abundant vehicular traffic, where spaces supposedly reserved for pedestrians are invaded by cars and vendors. Many pedestrians have never driven a motor vehicle, few know the traffic signs, and almost all events were "hit and run" cases. CONCLUSIONS: The combination of quantitative and qualitative methods allows us to see the specific importance of some determinants of pedestrian injuries. Spatial, epidemiological, and social perspectives help point out the local accident characteristics which must be considered before defining preventive interventions.

Accidents, Traffic↗

PubMedDate not supplied

Pedestrian traffic injuries in Mexico: a country update.

Road traffic injuries in general and pedestrian injuries in particular are a major public health problem in Mexico, especially in large urban areas. Analysis of mortality and road crashes at the national level was done using routine data recorded on death certificates. Fatality rates for different age groups were estimated by region for the year 2000. These data were supplemented by a cross-sectional study of pedestrian injuries in Mexico City based on death certificates information for pedestrians who lived and died in Mexico City between 1994 and 1997. Participant observation of physical spaces where crashes occurred was carried out. The spaces were filmed and in-depth interviews of survivors conducted. Road traffic crashes were responsible for approximately 17,500 deaths in Mexico during 2000. The mean age of the victims was 37 years. Mexico lost an average of 30 years of productive life for each individual who died in a traffic crash--525,000 years in 2000. An estimated 9500 (54.3%) of all fatalities were pedestrians, and for every pedestrian death there were 13 others who sustained nonfatal injuries requiring medical care. The overall crude mortality rate for pedestrian injuries in Mexico City was 7.14 per 100,000 (CI 6.85-7.42). A concentration of deaths was observed in 10 neighborhoods at specific types of street environments. The underlying factors included dangerous crossings and the absence or inadequacy of pedestrian bridges, as well as negative perceptions of road safety by pedestrians. In conclusion, this study demonstrates the importance of elucidating the underlying contextual determinants of pedestrian injuries.

Accidents, Traffic↗