Demographic and behavioural factors associated with chlamydia incident and re-infection among a cohort of sexually active 16 to 25 year old women.

*
Analysis of incident infections includes re-infection.
a
 = confidence interval;
b
 = adjusted for age, employment, clinic type, number of new partners and recent antibiotic use;
c
 = adjusted for clinic type;
d
 = previous positive chlamydia test reported on questionnaire or diagnosed at time of recruitment into the study.