Toward a resolution of contradictions. Utility of feedback from the GHQ.

Methodologic problems in prior research have contributed to contradictory findings about the effect of feedback from self-report questionnaires on the recognition of mental disorders in primary care settings. This study addresses those problems by assigning family practice resident physicians (N = 32), not their patients, to experimental and control groups, and by collecting baseline as well as postintervention data, for a total of 1040 patient encounters. The 28-item GHQ served as the screening instrument and was given to all participating patients seen by the experimental group. Following training in their interpretation, feedback of GHQ results constituted the intervention. Measures of recognition included a psychiatric diagnosis, psychologic and psychosocial chart notations, and various treatment options (e.g., therapy, consultation, referral, drugs, singly and in combination). Evidence for a diagnosis of mental disorder was limited to the Assessment portion of the SOAP note. Results indicate that GHQ feedback resulted in a significant twofold increase in the total number of psychiatric diagnoses. Recognition was heightened in all diagnostic categories, with a statistically significant increase in the number of depression diagnoses. Similarly, employment of all treatment modalities increased following feedback, although the only statistically significant increase was the prescription of antidepressant drugs. Psychologic notations increased as well, but psychosocial notations did not. Physicians who tended to recognize psychiatric morbidity at pretest benefited most from GHQ feedback. Implications for future research are discussed.