Comparison of acute and subclinical pelvic inflammatory disease.

Objective: The objective of this study was to compare the demographic, clinical, and microbiologic findings in women with subclinical pelvic inflammatory disease (PID) and women with acute PID.

Study: A cross-sectional study was performed using cohorts from 2 separate studies of 1293 women at risk for PID. Most participants were recruited from emergency departments, sexually transmitted disease clinics, and family planning clinics in metropolitan centers.