Agreement in symptoms of anxiety and depression between patients and GPs: the influence of ethnicity

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Abstract
Background. Few studies have focused specifically on the role of ethnicity in the identification and treatment of anxiety and depressive symptoms among patients consulting GPs. Methods. A survey was conducted of 4753 patients aged 18–90 years attending general practices in Sydney, Australia. Three methods of case detection were used: a GHQ-12 score (≥3), self-report symptoms (using a checklist) and GP detection of symptoms. Four regional groupings based on country of birth [other English speaking countries (ESB), European, Asian (predominantly south east Asian) and other non-English speaking (other NESB)] were compared with Australian (AB) patients. Results. Compared with AB patients, Asian patients had a lower mean GHQ-12 score (2.04 versus 2.54) and a lower rate of GP detection (10.4% versus 20.5%) but they recorded a similar rate of self-report symptoms (16.7% versus 20.1%). For Asian patients, 24.6% of all cases identified by self-report or by GP detection were identified by both methods, compared with 44% for AB patients. Similar patterns of treatment and referral were observed for detected cases. Compared with AB patients, Asian and other NESB patients were more likely to desire more time to discuss their problems with their GP (18.5% versus 42.0%, 37.3%) and receive an explanation of medications prescribed (18.9% versus 46%, 40.0%). Conclusion. These results suggest that there are substantial variations in the rates of detection of anxiety and depressive symptoms in GP patients depending on the screening methods used and the broad ethnic background of patients. Such symptoms may be under-diagnosed in Asian patients in particular.