Barczak P, Kane N, Andrews S, Congdon A M, Clay J C, Betts T
West Midlands Centre for Forensic Psychiatry.
Br J Psychiatry. 1988 May;152:698-700. doi: 10.1192/bjp.152.5.698.
The prevalence of psychiatric disorder (by DSM-III criteria) in a population attending a genito-urinary clinic was found to be 31%. The performance of the Hospital Anxiety Depression (HAD) scale as a screening questionnaire for psychiatric disorder was assessed. Case definition by a score of 8 or more on either of the anxiety or depressive subscales produced optimal results, giving sensitivities of 82% and 70%, and specificities of 94% and 68%, for depressive and anxiety disorders respectively.