Our alcohol section began by asking about any lifetime alcohol use. In our FF4, MM1, and MM2 interviews, 8.0%, 5.0%, and 4.3% of participants, respectively, denied any lifetime alcohol use and were excluded from all subsequent analyses. We then asked about “drinking habits in the past year,” having defined an alcoholic drink as “one bottle of beer, one glass of wine, or one shot of liquor.” Drink frequency was defined as “in a typical month in the last year, how many days out of 30 did you have an alcoholic drink?” Regular quantity was defined as “On those days when you drank, how many drinks did you usually have in a day?” Maximum quantity was defined as “What is the largest number of drinks you had on any single day during the past year?” Drunk frequency was defined as “During the past year, how often did you drink enough to feel drunk?” For drink frequency, regular quantity and maximum quantity, we simply recorded the number of days per month or drinks per day. For drunk frequency, we had 11 response
