Introduction The assessment phase of Urban Health Equity Assessment and Response Tool (urban HEART) project was carried out in Tehran in 2008. The objective of this study is to determine the socioeconomic inequality in unintentional injuries in children <5 years of age using the survey data.
Method More than 21 000 households contain 81 418 individuals were randomly selected by a three-stage sampling scheme. The sample included 4394 subjects <5 years old. In each household, the respondents were asked to describe all unintentional injuries occurred for any of the household members during past 12 months which needed treatment in a medical facility or caused to at least 1 day loss of normal life activities. Asset data was used for assessment of the socioeconomic status by applying principal component analysis. To measure inequalities, concentration indices were calculated for each type of unintentional injuries.
Results Annual incidence rate for all injuries was 33.0 (95% CI 28.1 to 38.7) per 1000 person years. It was 47.8 (95% CI 35.5 to 64.0) per 1000 person years for the poorest and 19.3 (95% CI 12.1 to 30.8) for the richest quintile. Concentration index for all types of unintentional injuries was −0.40 (SE=0.07). Concentration indices for traffic injuries, falls, burns and poisonings were −0.41 (SE=0.09), −0.37 (SE=0.07), −0.62 (SE=0.21) and −0.35 (SE=0.9) respectively.
Conclusion Results of this study showed substantial differences in children's unintentional injuries between socioeconomic groups. Although the first phase of Urban HEART project was primarily intended to measure inequality in health among urban communities; it is expected that appropriate responses undertake to modify the observed inequalities.
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