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

SAATSA scales	EFA	CFA indices
	Factor loading	χ 2/df ratio	CFI	RMSEA
Substance use scale
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
Quality of life scale
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
Social connectedness scale
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