Associations between Gastro-oesophageal Reflux Disease, Generalised Anxiety Disorder, Major Depressive Episodes, and Healthcare Utilisation: a Community-based Study.

OBJECTIVE To examine the prevalence and comorbidity of gastro-oesophageal reflux disease (GORD) with generalised anxiety disorder (GAD) and major depressive episodes (MDE) in a general population using DSM-IV, and to evaluate the associations between these conditions and healthcare utilisation. METHODS A random population-based telephone survey was conducted to record frequency of GORD symptoms, symptoms of GAD and MDE based on DSM-IV, and healthcare utilisation. RESULTS Of 2011 respondents, 4.2% had weekly GORD and 13.9% had monthly GORD, whereas 3.8% reported GAD and 12.4% reported MDE. Those with monthly GORD had higher risk of GAD (p = 0.01) and MDE (p < 0.001). GORD symptom frequency was independently correlated with MDE and GAD in a dose-response manner. The number of psychiatric diagnoses was independently correlated with GORD. GORD symptom frequency, GAD, and MDE were correlated with consultation frequency. GORD symptom frequency was corelated with high investigation expenditure. CONCLUSION GORD had a strong dose-response relationship with GAD and MDE in a Hong Kong population. Excessive healthcare utilisation should alert clinicians to the risk of psychiatric comorbidity.