Frequency of heavy drinking was assessed with the following question: “At the present, how often do you within 1 occasion use more than 5 bottles of beer, or more than a bottle of wine, or more than half a bottle of hard liquor?” Response options included: (1) I don’t use alcohol; (2) Never; (3) Once or year or less frequently; (4) 3 to 4 times a year; (5) About once in 2 months; (6) About once a month; (7) A couple times a month; (8) About once a week; (9) About twice a week; (10) Daily.
