Table 3 Results of exploratory factor analyses (EFA) and confirmatory factor analyses (CFA) for the SAATSA substance use, quality of life and social connectedness subscales

13. I am less likely to use alcohol or other drugs

0.39

Five item version = 4.23. Four item version = 0.97

Five item version = 0.96. Four item version = 0.99

Five item version = 0.09 (CI: 0.07, 0.18) Four item version = 0.01 (CI: 0.00, 0.04)

21. I have friends who are not using alcohol or drugs

0.21

23. I know that using alcohol or drugs is a problem for me

0.50

24. I need to work on my problems with alcohol and/or drugs

0.33

25. The treatment centre is helping me recover from using drugs and alcohol

0.44

10. My general health is improving

0.48

Five item version = 3.56. Four item version = 2.75

Five item version = 0.98. Four item version = 0.99

Five item version = 0.08 (CI: 0.06, 0.15). Four item version = 0.07 (CI: 0.02, 0.10)

11. I am better able to cope when things go wrong

0.45

12. I am better able to accomplish the things I want to do

0.56

14. I expect to do better at work/finding work or at school

0.41

15. I am more likely to practice safe sex

0.32

16. There is someone who cares about whether I am doing better

0.61

Seven item version = 2.86. Four item version = 2.25.

Seven item version = 0.98. Four item version = 0.99.

Seven item version = 0.07 (CI: 0.01, 0.12). Four item version = 0.06 (CI: 0.02, 0.09).

17. I have someone who will help me when I have a problem

0.66

18. I have people in my life who are a positive influence

0.64

19. The people who care about me are supportive of my treatment

0.68

20. My friends and family are more able to count on me

0.51

21. I have friends who are not using alcohol or drugs

0.26

22. I have someone who will listen to me when I need to talk

0.49