Adjusted associations between chlamydia infection and gender, socioeconomic position, education and number of sexual partners, with complete case analysis and using three sensitivity tests examining missing data.

aN varies between 1809 and 2879 due to missing values of measures of socioeconomic position and number of sexual partners. bModel 1: Adjusted for age and other measures of socio-economic position that were considered to be potential confounders, identified using a hierarchical conceptual framework. cModel 2: Adjusted for variables in Model 1 and reported number of sexual partners.