Table 3 Multiple multinomial regression with non-daily and daily cannabis use (reference no past 3-month cannabis use)
Variable | Non-daily cannabis use | Almost daily cannabis use | ||
|---|---|---|---|---|
Adjusted RRR (95% CI) | P-value | Adjusted RRR (95% CI) | P-value | |
Sex | ||||
Female | 1 (Reference) | 1 (Reference) | ||
Male | 2.20 (1.77, 2.75) | < 0.001 | 10.55 (6.88, 16.18) | < 0.001 |
Age in years | ||||
45 or more | 1 (Reference) | 1 (Reference) | ||
30–44 | 1.06 (0.81, 1.38) | 0.665 | 0.92 (0.61, 1.38) | 0.685 |
15–29 | 1.09 (0.80, 1.49) | 0.587 | 0.92 (0.60, 1.39) | 0.677 |
Education | ||||
Grade 0–7 | 1 (Reference) | 1 (Reference) | ||
Grade 8–11 | 1.14 (0.88, 1.49) | 0.322 | 1.75 (1.26, 2.44) | < 0.001 |
Grade 12 or more | 1.02 (0.76, 1.36) | 0.899 | 0.99 (0.70, 1.40) | 0.974 |
Marital status | ||||
Married | 1 (Reference) | 1 (Reference) | ||
Separated/divorced/widowed | 0.95 (0.62, 1.45) | 0.800 | 1.08 (0.51, 2.28) | 0.843 |
Never married | 2.05 (1.54, 2.71) | < 0.001 | 3.00 (1.97, 4.59) | < 0.001 |
Population group | ||||
African Black | 1 (Reference) | 1 (Reference) | ||
White | 1.58 (1.06, 2.24) | 0.024 | 0.88 (0.42, 1.84) | 0.730 |
Coloured | 1.25 (0.90, 1.72) | 0.189 | 1.52 (1.09, 2.11) | 0.013 |
Indian or Asian | 1.27 (0.76, 2.12) | 0.368 | 0.59 (0.31, 1.13) | 0.112 |
Employement status | ||||
Employed/self-employed | 1 (Reference) | 1 (Reference) | ||
Unemployed | 1.08 (0.83, 1.39) | 0.570 | 0.89 (0.64, 1.23) | 0.470 |
Not in labour force | 0.97 (0.68, 1.39) | 0.879 | 0.32 (0.17, 0.61) | < 0.001 |
Residence | ||||
Rural informal (tribal areas) | 1 (Reference) | 1 (Reference) | ||
Rural (farms) | 1.00 (0.70, 1.44) | 0.990 | 0.94 (0.54, 1.64) | 0.818 |
Urban | 1.00 (0.77, 1.30) | 0.983 | 1.45 (0.92, 2.28) | 0.106 |
Alcohol use disorder | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 2.89 (2.12, 3.78) | < 0.001 | 3.07 (2.30, 4.09) | < 0.001 |
Other drugs | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 52.29 (36.17, 75.68) | < 0.001 | 16.44 (9.75, 27.72) | < 0.001 |
Physical multimorbidity | ||||
0 | 1 (Reference) | 1 (Reference) | ||
1 | 0.86 (0.64, 1.15) | 0.311 | 0.87 (0.53, 1.41) | 0.562 |
2 or more | 0.47 (0.29, 0.78) | 0.003 | 0.24 (0.07, 0.79) | 0.020 |
Health care utilization | ||||
No | 1 (Reference) | 1 (Reference) | ||
Yes | 0.94 (0.78, 1.13) | 0.518 | 0.77 (0.56, 1.05) | 0.099 |