Table 3.

Risk of chlamydial infection in women aged 15–24 years seen in U.S. Public Health Service Region X family planning clinics, 1997–2006: multivariate results within racial/ethnic groups

^aAORs and 95% CIs produced via generalized mixed model with logistic link, incorporating clinic as a random effect (to account for records clustering by clinic) and ZIP code as a random effect (to account for potential clustering and correlation of responses at the ABSM level)

^bABSM based on rural-urban commuting area codes associated with client residential ZIP code

^cIncludes cervicitis, friable cervix, ectopy, and pelvic inflammatory disease

^dBased on U.S. Census 2000 ZIP-code tabulation areas associated with client residential ZIP code

AOR = adjusted odds ratio

CI = confidence interval

Ref. = reference category

NAAT = nucleic acid amplification technology

FPL = federal poverty level

ABSM = area-based socioeconomic measure