Table 1 Questions used to investigate alcohol consumption in respondent's 20 s, and the same questions were asked in respondent's 30 s and 40 s, and 50 s

Q1.

In your 20s, did you ever consume beer or hard cider (at least 3% alcohol) at least once a week for 6 months or longer?

• yes • no • don't know

Q1a.

For how many years?

___ years consumed

Q1b.

During those years, how much did you typically consume?

___ number of 12 ounce cans or bottles • per day • per week • don't know

Q2.

In your 20s, did you ever consume wine at least once a week for 6 months or longer?

• yes • no • don't know

Q2a.

For how many years?

___ years consumed

Q2b.

During those years, how much did you typically consume?

___ number of 4 ounce glasses of wine • per day • per week • don't know

Q3.

In your 20s, did you ever consume sake, sherry, or port at least once a week for 6 months or longer?

• yes • no • don't know

Q3a.

For how many years?

___ years consumed

Q3b.

During those years, how much did you typically consume?

___ number of 1 ounce servings • per day • per week • don't know

Q4.

In your 20s, did you ever consume spirits, liquor mixed drinks, brandy, or liqueurs at least once a week for 6 months or longer?

• yes • no • don't know

Q4a.

For how many years?

___ years consumed

Q4b.

During those years, how much did you typically consume?

___ number of 1 ounce shots of liquor or spirits • per day • per week • don't know

Q5.

When you were in your 20s, how many years in total did you consume at least one alcoholic beverage (of any type) a week?

___ years consumed • never consumed alcohol

Q6.

On average, how many alcoholic beverages a week did you consume during those years? That is, how many 4 ounce glasses of wine or 12 ounce cans or bottles of beer or hard cider, or 1 ounce servings of sake, sherry, port, or spirits, mixed drinks and cocktails.

___ number of alcoholic beverages a week • never consumed alcohol