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Table 3 Alcohol and tobacco -related outcome measures at baseline, 3-month and 6-month follow-up

From: Screening and concurrent brief intervention of conjoint hazardous or harmful alcohol and tobacco use in hospital out-patients in Thailand: a randomized controlled trial

   Intervention Control Control GEE (Time) GEE (Group x Time)
Variables Time Alcohol and Tobacco Tobacco only Alcohol only Wald Chi-square P-value Wald Chi-square P-value
Criterion variables
Past week tobacco use units (M, SD) Baseline (n = 620) 78 (52) 66 (49) 70 (48) 332.38 <0.001 2.60 0.107
3 months (n = 462) 41 (38) 22 (32) 36 (37)
6 months (n = 450) 40 (35) 20 (29) 37 (42)
Past week alcoholic use units (M, SD) Baseline (n = 620) 22 (27) 19 (22) 21 (22) 206.48 <0.001 3.01 0.083
3 months (n = 462) 8 (15) 5 (7) 7 (12)
6 months (n = 450) 12 (18) 5 (9) 6 (10)
Tobacco ASSIST total (M, SD) Baseline (n = 620) 19.2 (4.4) 21.9 (3.6) 19.3 (4.4) 485.08 <0.001 8.43 0.004
3 months (n = 462) 7.0 (4.9) 9.1 (9.1) 8.9 (6.7)
6 months (n = 450) 6.3 (3.9) 9.1 (9.4) 8.5 (6.5)
Past week tobacco abstinent (N, %) Baseline (n = 620) 0 (0.0) 0 (0.0) 0 (0.0) 2000.16 <0.001 7.34 0.007
3 months (n = 462) 31 (19.1) 61 (41.2) 37 (24.3)
6 months (n = 450) 28 (17.7) 70 (49.0) 40 (26.7)
Alcohol ASSIST total (M, SD) Baseline (n = 620) 16.9 (4.6) 16.2 (4.3) 17.2 (3.9) 1810.97 <0.001 1.80 0.179
3 months (n = 462) 5.6 (5.6) 7.5 (7.4) 6.3 (6.3)
6 months (n = 450) 6.1 (4.9) 8.6 (8.0) 4.8 (5.7)
Alcohol ASSIST score (<11) (N,%) Baseline (n = 620) 0 (0.0) 0 (0.0) 0 (0.0) 486.58 <0.001 1.07 0.301
3 months (n = 462) 131 (80.9) 96 (64.9) 110 (72.4)
6 months (n = 450) 127 (80.9) 86 (60.1) 123 (82.0)
Past week tobacco abstinent OR Alcohol ASSIST (<11) (N,%) Baseline (n = 620) 0 (0.0) 0 (0.0) 0 (0.0) 745.64 <0.001 1.05 0.305
3 months (n = 462) 102 (63.0) 63 (42.6) 87 (57.6)
6 months (n = 450) 101 (64.3) 54 (37.8) 91 (60.7)
Past week tobacco abstinent AND Alcohol ASSIST (<11) (N,%) Baseline (n = 620) 0 (0.0) 0 (0.0) 0 (0.0) 737.40 <0.001 0.88 0.348
3 months (n = 462) 30 (18.5) 47 (31.8) 30 (19.6)
6 months (n = 450) 27 (17.2) 51 (35.7) 36 (24.0)