Problem drinking (1 item): the questionnaire included an alcoholism-screening test, the CAGE test (40). CAGE is a brief
screening instrument of four short questions (“Have you ever felt you should cut down on your drinking?”; “Have people annoyed you by criticizing your drinking?”; “Have you ever felt bad or guilty about your drinking?”; “Have you ever had a drink in the morning to get rid of a hangover?”), where each question is scored with dichotomous ‘Yes’/‘No’ response. Two or three affirmative answers suggest problem drinking, while four positive responses indicate serious suspicion of alcohol dependence.