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WHO Project on Health Implications of Cannabis Use:

A Comparative Appraisal of the Health and Psychological Consequences of Alcohol, Cannabis, Nicotine and Opiate Use

Table 1:

Summary of ratings of overall effects of drug use by current users (Percent)

United States 1974: Males aged 20 - 30

O'Donnell et al., 1976:79

Ontario 1994: Both sexes aged 18 - 34

Bondy, 1994

RESPONSES LIFETIME USERS OF: RESPONSES CURRENT USERS OF:
ALCOHOL TOBACCO MARIJUANA
OR HASHISH
ALCOHOL TOBACCO MARIJUANA
OR HASHISH
Total N (2434) (2211) (1382) Total (601) (256) (121)
"Very good" or "more good than bad" 33 12 45 More good than harm 19 3 29
No effect 21 22 22 Harm and good about equal 70 7 59
"More bad than good" or "very bad" 46 66 33 More harm than good 11 50 12



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