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Table 3 Multiple multinomial regression with non-daily and daily cannabis use (reference no past 3-month cannabis use)

From: Prevalence and correlates of non-daily and daily cannabis use among persons 15 years and older in South Africa: results of a national survey in 2017

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
  1. RRR Relative Risk Ratio, CI Confidence Interval