Demographic characteristics and underlying health status of children aged <5 years with severe acute respiratory infections in Matlab, Bangladesh, June–October 2010.

*P-value for nonparametric equality-of-median test.†We asked the parent if the case-patient had any medical conditions such as diabetes, chronic heart disease, chronic lung disease, asthma, chronic liver disease, neurologic/neuromuscular disease, hematologic disorder, metabolic disorder, immunosuppressive condition or cancer.‡One case had reactive airway disease and the other had congenital heart disease.§The median number of household members per 100 sq ft was 2.2 in rural Bangladesh [51].||One missing value in each group.