Table 1 Questions, answers, and derived variables

Has a doctor ever diagnosed you to have chronic bronchitis or emphysema

Yes

Having chronic bronchitis/emphysema

No

Not having chronic bronchitis/emphysema

How often, during the past week, have you eaten:

Not once

Less than every day

Fruits

1-2 times

3-5 times

6-7 times

Every day

How often, during the past week, have you eaten: Vegetables

Not once

Less than every day

1-2 times

3-5 times

6-7 times

Every day

Have you ever smoked in your life?

Yes

Those who never smoked- non smokers

No

Have you smoked at least 100 cigarettes in your life?

Yes

No

Those who used to smoke but do not smoke now - ex smokers

Do you smoke now?

Yes, every day

Those who smoke occasionally or every day - smokers

Yes, from time to time

No

Which of the following statements refer to you?

Never consumed before.

Not heavy (not at risk)

Tried drinking once or twice

Used to but not any more

I drink occasionally.

I drink every day

Heavy (at risk)

How often does it happen that you drink 6 or more alcoholic drinks on a single occasion?

Never

Not at risk

Less than once a month

Once a month

At risk

Once a week

Once a day or almost every day

If we look back on the past year, what would you say best describes your spare time activities?

Hard training and competitive sports

Active

Recreational sports or heavy gardening

Walking, bicycling or other light activities at least 4 hours a week

Reading, watching TV or other sedentary activity

Not active

How would you rate your health in general?

Very bad

Very bad/bad

Bad

Fair

Fair

Good

Very good/Good

Very good