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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

From: Interaction between alcohol drinking and obesity in relation to colorectal cancer risk: a case-control study in Newfoundland and Labrador, Canada

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