The British Journal of Psychiatry 150: 828-835 (1987)
© 1987 The Royal College of Psychiatrists
Psychiatric disorder in the community and the General Health Questionnaire
PG Surtees
University Department of Psychiatry, Royal Edinburgh Hospital.
Goodchild & Duncan-Jones (1985) have proposed a new scoring method for
Goldberg's General Health Questionnaire (GHQ) in which increased weight is
given to item responses considered to indicate current (but chronic)
affective disorders. This report examines both their revised and the
conventional scoring of the GHQ in the context of a longitudinal general
population study of psychiatric disorder among women. Sensitivity estimates
based upon advised cut-points were found to be higher for the revised than
for the conventional scoring scheme, and this difference remained when
allowance was made for the duration for which disorders had been present
prior to assessment with the GHQ. However, Relative Operating
Characteristic (ROC) analysis revealed that while both forms of scoring the
GHQ discriminated affective conditions (with or without allowance for their
duration) there was no significant difference in their ability to do so.
The justification therefore for the post-hoc interpretation of certain item
responses as indicators of enduring affective states remains controversial
and an issue for future research.