Table 2 Simple multinomial regression with cannabis use
Variable | Non-daily cannabis use | Almost daily cannabis use | ||
|---|---|---|---|---|
Crude RRR (95% CI) | P-value | Crude RRR (95% CI) | P-value | |
Sex | ||||
Female | 1 (Reference) | 1 (Reference) | ||
Male | 2.52 (2.06, 3.09) | < 0.001 | 13.35 (9.11, 19.58) | < 0.001 |
Age in years | ||||
45 or more | 1 (Reference) | 1 (Reference) | ||
30–44 | 1.69 (1.36, 2.09) | < 0.001 | 2.06 (1.43, 2.96) | < 0.001 |
15–29 | 2.08 (1.68, 2.57) | < 0.001 | 2.08 (1.49, 2.91) | < 0.001 |
Education | ||||
Grade 0–7 | 1 (Reference) | 1 (Reference) | ||
Grade 8–11 | 1.25 (1.01, 1.57) | 0.042 | 2.60 (1.97, 3.44) | < 0.001 |
Grade 12 or more | 1.09 (0.89, 1.35) | 0.404 | 1.36 (1.02, 1.81) | 0.037 |
Marital status | ||||
Married | 1 (Reference) | 1 (Reference) | ||
Separated/divorced/widowed | 0.87 (0.63, 1.22) | 0.427 | 0.97 (0.47, 2.02) | 0.944 |
Never married | 2.12 (1.71, 2.62) | < 0.001 | 3.05 (2.07, 4.51) | < 0.001 |
Population group | ||||
African Black | 1 (Reference) | 1 (Reference) | ||
White | 0.97 (0.71, 1.32) | 0.836 | 0.50 (0.27, 0.94) | 0.032 |
Coloured | 1.27 (0.97, 1.66) | 0.086 | 1.54 (1.13, 2.08) | 0.006 |
Indian or Asian | 0.98 (0.95, 1.47) | 0.913 | 0.42 (0.24, 0.73) | 0.002 |
Employement status | ||||
Employed/self-employed | 1 (Reference) | 1 (Reference) | ||
Unemployed | 1.07 (0.88, 1.29) | 0.499 | 0.83 (0.63, 1.09) | 0.170 |
Not in labour force | 1.11 (0.86, 1.43) | 0.414 | 0.35 (0.21, 0.57) | < 0.001 |
Residence | ||||
Rural informal (tribal areas) | 1 (Reference) | 1 (Reference) | ||
Rural (farms) | 1.12 (0.83, 1.51) | 0.472 | 1.39 (0.85, 2.29 | 0.187 |
Urban | 1.09 (0.86, 1.37) | 0.474 | 1.77 (1.22, 2.59) | 0.003 |
Alcohol use disorder | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 3.88 (2.68, 4.28) | < 0.001 | 5.88 (4.54, 7.63) | < 0.001 |
Other drugs | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 46.89 (34.72, 63.33) | < 0.001 | 13.96 (9.04, 21.54) | < 0.001 |
Psychological distress | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 1.11 (0.86, 1.43) | 0.412 | 1.22 (0.87, 1.72) | 0.254 |
Physical multimorbidity | ||||
0 | 1 (Reference) | 1 (Reference) | ||
1 | 0.66 (0.53, 0.82) | < 0.001 | 0.50 (0.33, 0.76) | < 0.001 |
2 or more | 0.34 (0.21, 0.53) | < 0.001 | 0.11 (0.04, 0.33) | < 0.001 |
Health care utilization | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 0.72 (0.61, 0.85) | < 0.001 | 0.52 (0.39, 0.69) | < 0.001 |