Trends in diagnosis of pelvic inflammatory disease in an Australian sexual health clinic, 2002-16: before and after clinical audit feedback.

Abstract

Yearly PID diagnosis rates for women aged 16-49 years attending the clinic (2002-16) were calculated. Using multivariable generalised linear mixed models, adjusted for patient risk and lower genital infection (any of chlamydia, gonorrhoea, Mycoplasma genitalium, bacterial vaginosis) and stratified by before (2002-June 2007) and after (July 2007-2016) feedback, we assessed if PID rates changed over time, accounting for between-doctor variability. During 2002-16, 144 doctors undertook 84476 female consultations and diagnosed 1755 (2.1%, 95% confidence interval (CI) 2.0-2.2) with PID. Comparing 2002-03 to 2015-16, the yearly PID rate increased; 0.8% (37/4836) to 2.9% (209/7088). Comparing before and after feedback more women reported any symptoms at triage (35.1%-47.2%) or had a lower genital infection diagnosed (10.1%-14.9%). After feedback, PID rates increased by 8% yearly (incidence rate ratio (IRR) 1.08, 95% CI 1.06-1.11), but were unchanged (adjusted IRR (aIRR) 1.01, 95% CI 0.98-1.03) after adjustment for patient characteristics. Factors associated with PID were self-reported symptoms, younger age and a lower genital infection. Lower variability in doctor-specific rates was observed after feedback. Increasing PID diagnosis rates appeared to be driven by a greater female patient risk profile, influenced by increased capacity following service improvements.