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Table 1 Participant characteristics

From: Perception of tobacco, cannabis, and alcohol use of others is associated with one’s own use

Participants characteristics (n = 5216)

 

Age, mean (SD)

19.5 (1.3)

German speaking, n (%)

2097 (40.2%)

Elementary education only, n (%)

2523 (48.4%)

Any drinking, past 12 months, n (%)

4789 (91.8%)

Mean number of drinks*/week among drinkers (SD)

8.4 (14.0)

Any tobacco use, past 12 months, n (%)

2478 (47.5%)

Mean # of cigarettes/week among users (SD)

48.1 (54.8)

Any cannabis use, past 12 months, n (%)

1612 (30.9%)

Mean # of days/month with cannabis among users (SD)

7.0 (9.2)

Close friends with alcohol or drug problems,** n (%)

711 (13.6%)

Family history of alcohol problems,*** n (%)

388 (7.4%)

Family history of drug problems,*** n (%)

173 (3.3%)

  1. *Standard drink: 100 ml of wine; 250 ml of beer; 275 ml of premixed drink containing spirits; or 25 ml of spirits (each about 10 g of ethanol).
  2. **When participants reported that “some” or “most” of their close friends (versus “none” or “one or two”) had an alcohol or drug problem, the variable was coded positively.
  3. ***We considered that a family history of alcohol or drug problems was present when participants reported at least one parent or sibling with an alcohol or drug problem.