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Table 1 Baseline characteristics stratified by study condition

From: Screening and brief interventions for hazardous and harmful alcohol use among hospital outpatients in South Africa: results from a randomized controlled trial

Variables Control Intervention t/χ2 P-value
N = 196 (%) N = 196 (%)
Socio-demographic variables     
Gender (N, % male) 139 (71.3) 144 (73.5) .23 0.629
Age (M, SD) 35.4 (10.5) 36.1 (12.4) -.58 0.560
Education     
Grade 7 or less 19 (9.7) 19 (9.7) .05 0.978
Grade 8-11 86 (43.9) 88 (44.9)   
Grade 12 or more 91 (46.4) 89 (45.4)   
Marital status     
Never married 118 (61.5) 123 (64.4) 7.27 0.026
Married/cohabitating 71 (37.0) 56 (29.3)   
Separated/divorced/widowed 3 (1.6) 12 (6.3)   
Residence (N, % urban) 159 (81.1) 147 (75.8) 1.65 0.199
Main household income     
Formal salary 75 (45.7) 77 (43.5) .70 0.874
Contributions of family members or relatives 50 (30.5) 51 (28.8)   
Social grants 13 (7.9) 17 (9.6)   
No income 26 (15.9) 32 (18.1)   
Health variables     
Alcohol use (AUDIT score)     
AUDIT total (M,SD) 11.3 (3.4) 12.7 (3.4)   <0.001
AUDIT (7–15) 167 (85.2) 152 (77.9) 3.43 0.064
AUDIT (16–19) 29 (14.8) 43 (22.1)