Summary of Cross sectional study
Questions on Cross sectional study
A study is designed to assess the impact of air pollution in urban areas on the prevalence of asthma in children and adolescents <18-years-old. Data on the prevalence of asthma in children living in industrialized urban areas is collected and compared to equivalent data from the same time period of children living in rural areas. The urban and rural data sets were collected two years ago and are now being analyzed. Which of the following study types best describes the design of this study?