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Major Studies of Drugs and Drug Policy
Cannabis Control Policy

 Cannabis Control Policy: A Discussion Paper

 Health Protection Branch

Department of National Health and Welfare

January 1979

Appendix D

The Extent and Patterns of Cannabis Use

Among Adult Canadians, 1970-1978

Page

Table D-1. Adult Canadians – Incidence of Cannabis Use................... 91

Table D-2. Adult Canadians – Current Cannabis Use Patterns,

(Gallup, 1978)....................................................................... 92

Table D-3. Adult Canadians – Frequency of Cannabis Use................. 93

Table D-4. Adult Canadians – Cannabis Use by Region (Gallup, 1978) 94

TABLE D-1

ADULT CANADIANS – INCIDENCE OF USE

(Percent & Estimated Number in Population)

 

 Ever Used: Marijuana Hashish Cannabis
Canada, 1970 (Le Dain) 3.3% 422,000 2.5% 320,000 3.6% 451,000
Canada, 1978 (Gallup)1 16.4% 2,624,000 11.2% 1,792,000 17.2% 2,752,000
   

 

  

 

  

 
 Annual Use (past 12 months): Marijuana Hashish Cannabis
Canada, 1970 (Le Dain) * * * * 1.9% 238,000
Ontario, 1976 (ARF) * * * * 5.8% 337,8502
Ontario, 1977 (ARF) * * * * 8.6% 500,9502
Canada, 1978 (Gallup)1  9.4% 1,504,000 6.1% 976,000 9.75% 1,560,000

 

1 Conducted in January, 1978. Population estimates based on estimate of 16 million Canadians aged 18 and over in 1977.

2 Estimated number in Ontario only, based on estimate of 5,825,000 Ontarians aged 18 and over in 1977.

* Data not available.

Table D-2

ADULT CANADIANS – CURRENT CANNABIS USE PATTERNS, (GALLUP, 1978)1

(Percent & Estimated Number in Population)

 

Marijuana

Hashish

Cannabis

Use within 12 months of interview

 9.4% 1,504,000 6.1% 976,000 9.75% 1,560,000

Use within 30 days of interview

 8.0% 1,280,000 5.1% 816,000 8.3% 1,328,000

Used within week prior to interview

 3.2% 512,000 1.1% 176,000 3.6% 576,000

Used daily in past 30 days

  1.4% 224,000 0.3% 48,000 1.4% 224,000

 

1 See note on Table D-1.

TABLE D-3

ADULT CANADIANS – FREQUENCY OF CANNABIS USE

(Percent & Estimated Number in Population)

 
 

 

  1970 (Le Dain)

"Past 12 months"

 1976 (Ontario)2

"Past 12 months"

 1977 (Ontario)2

"Past 12 months"

 1978 (Gallup)1

"Past 30 days"
Once weekly or less 1.8% 225,000 4.6%   273,650  7.4% 430,800  4.7% 752,000
More than once weekly  0.1% 12,500 1.1% 64,200 1.2% 70,150 3.6% 576,000
Total 1.9% 238,000 5.8% 337,850 8.6% 500,950 8.3% 1,328,000

 

 

1 & 2 See notes on Table D-1.

TABLE D-4

ADULT CANADIANS – CANNABIS USE BY REGION (GALLUP, 1978)1
 

 

 Ever used

Use within past 12 months

Use within past 30 days

Use in past Week
  % of Est. no. in

sample Region

 % of Est. no. in

sample Region

 % of Est. no. in

sample Region

 % of Est. no. in

sample Region
 Atlantic 10.8 173,000 7.6 122,000 6.7 107,000 3.8 61,000
Quebec 12.5 550,000 6.5 281,000 5.5 238,000 1.0 43,000
Ontario 22.4 1,326,000 11.5 681,000 9.7 574,000 4.0 237,000
 Prairies 12.5 300,000 8.4 202,000 5.8 139,000 2.6 62,000
 B.C. 22.6 400,000 15.2 270,000 15.2 270,000 9.8 173,000
 Canada 17.2 2,752,000 9.75 1,560,000 8.3 1,328,000 3.6 576,000

 

1 See note on Table D-1.
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