Cervical cancer screening in the Canadian armed forces: An estimation of screening participation rates using the CF-HERO surveillance system.

Background: Military women are faced with unique circumstances, including frequent relocation and occupational factors that may influence their participation in routine cervical cancer screening. No data on programmatic participation in cervical cancer screening in Canadian Armed Forces women has been synthesized to date.

Objective: To estimate cervical cancer screening rates in Canadian military women using clinical and administrative data sources.

Methods: Actively serving Regular Force females who were >25 years of age between January 1st 2015 and December 31st 2017 were included in the study. Scanned documents containing Papanicolaou (Pap) test results were extracted from electronic health records and further linked to demographic data sources. Screening coverage rates were calculated over the three-year study period, and results were stratified by both military command and rank.

Results: The study period yielded over 23,000 person-years of data. The average screening rate over this period was 77.7 %, and was highest in the 45-60 year age group. Variations in rates were observed by rank and command, with higher screening rates observed in Officers and Royal Canadian Navy staff. Overall, screening rates showed a declining trend for all groups across the study period.

Conclusions: Cervical cancer screening rates amongst CAF members are currently below recommended guidelines and appear to be declining. These trends mirror those observed more widely in the general Canadian population, and may be a consequence of recent changes to guidelines for both cervical cancer and human papillomavirus (HPV) screening.