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Table 3 Intention to treat- comparison of groups on primary and secondary outcomes

From: The efficacy of a blended motivational interviewing and problem solving therapy intervention to reduce substance use among patients presenting for emergency services in South Africa: A randomized controlled trial

 

Control

MI

MI-PST

MI vs Control (Contrast 1)

MI/CG vs MI-PST (Contrast 2)

(mean [1])

(mean [1])

(mean [1])

Adjusted Mean

95 % CI

Adjusted Mean

95 % CI

   

(diff [SE])

 

(difference [SE])

 

Substance use: ASSIST

 Baseline

19.30 (5.78)

19.96 (6.49)

18.71 (6.32)

    

 3 month follow-up

11.91 (6.94)

12.28 (6.81)

9.89 (6.64)

    

 Adjusted Means (SE)

11.93 (0.66)

11.95 (0.72)

10.22 (0.78)

−0.02 (1.00)

−2.01-1.96

−1.72 (0.82)

−3.36- -0.08*

Depression: CES-D

 Baseline

24.56 (6.02)

23.93 (5.43)

27.28 (8.22)

    

 3 month follow-up

20.13 (7.09)

17.77 (8.12)

16.64 (8.17)

    

Adjusted Means (SE)

17.78 (1.30)

15.64 (1.21)

13.38 (1.49)

2.15 (1.59)

−0.99-5.29

−3.33 (1.46)

−6.24- -0.42**

Verbal arguments

 Baseline

0.82 (1.56)

0.59 (1.21)

0.92 (3.02)

    

 3 month follow-up

0.76 (0.97)

0.23 (0.77)

0.71 (1.18)

    

Adjusted Means (SE)

0.60 (0.10)

0.37 (0.10)

0.52 (0.13)

0.24 (0.15)

−0.05-0.54

0.04 (0.15)

−0.27-0.34

Physical fights

 Baseline

0.49 (0.73)

0.50 (0.97)

0.55 (1.41)

    

 3 month follow-up

0.45 (0.63)

0.28 (0.84)

0.23 (0.71)

    

Adjusted Means (SE)

0.36 (0.07)

0.30 (0.07)

0.24 (0.07)

0.06 (0.09)

0.12-0.25

0.04 (0.15)

−0.25-0.07

Police interactions

 Baseline

0.25 (0.63)

0.15 (0.36)

0.55 (1.41)

    

 3 month follow-up

0.23 (0.60)

0.23 (0.56)

0.16 (0.59)

    

Adjusted Means (SE)

0.19 (0.06)

0.24 (0.05)

0.16 (0.05)

−0.05 (0.07)

−0.19-0.09

−0.05 (0.07)

−0.19- -0.09

Injuries

 Baseline

0.76 (0.72)

0.67 (0.84)

0.19 (0.53)

    

 3 month follow-up

0.23 (0.49)

0.27 (0.53)

0.36 (0.54)

    

Adjusted Means (SE)

0.25 (0.06)

0.26 (0.05)

0.30 (0.06)

−0.01 (0.08)

−0.16-0.14

0.04 (0.07)

−0.10-0.18

Healthcare visits

 Baseline

0.67 (0.59)

0.55 (0.60)

0.45 (0.75)

    

 3 month follow-up

0.54 (0.63)

0.49 (0.84)

0.56 (1.24)

    

Adjusted Means (SE)

0.43 (0.09)

0.49 (0.08)

0.61 (0.08)

−0.06 (0.11)

−0.28-0.16

0.15 (0.10)

−0.05-0.35

  1. *(t (332) = −2.08, p = 0.04)
  2. **(t (170) = 2.72, p = p > 0.001)
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Substance Abuse Treatment, Prevention, and Policy

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