Incidence and recent trends in functional gastrointestinal disorders, active component, U.S. Armed Forces, 2005-2014.

Functional gastrointestinal disorders (FGIDs) are common chronic conditions with an unknown pathophysiology and etiology. FGIDs elevate healthcare costs and cause substantial burden to public health and the military, including diminished readiness, productivity, and quality of life. This retrospective cohort study of active component U.S. military personnel covered a 10-year surveillance period, 2005-2014. The Defense Medical Surveillance System (DMSS) was the data source. Incident cases were identified and rates were calculated and stratified by important covariates. Trends were described over the surveillance period. Incidence rates among deployed personnel were compared to rates in non-deployed personnel, stratified by age and sex. An increasing trend in functional constipation was observed during 2005-2012. Being female, black, in the Army or Air Force, and younger than 20 years of age or 40 years of age or older was associated with higher incidence rates. Deployment-exposed personnel had incidence rates that were 53% higher than those of non-deployed personnel. Elevated rates in personnel younger than 20 years of age and deployed personnel evoke interest concerning readiness and cost implications for the Military Health System. These subgroups should be examined in future studies.