Skip to main content
. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Subst Abus. 2013 Jan;34(1):60–69. doi: 10.1080/08897077.2012.691452

Table 2.

Means and rates of participation in 12-step activities over time.

Continuous Variables Baseline:
Mean (SD)
(N=508)
7 weeks:
Mean (SD)
(N=410)
6 months:
Mean (SD)
(N=379)
12 months:
Mean (SD)
(N=384)

30-day meeting attendance (range 0-75) 10.08 (12.08) 15.37 (10.76) 13.53 (13.28) 10.95 (12.33)
Social interaction with members (range 0-1) 0.52 (0.39) 0.69 (0.31) 0.71 (0.34) 0.67 (0.39)
Prop. of 12-step members in network (range 0-1) 0.10 (0.23) 0.16 (0.27) 0.25 (0.31) 0.24 (0.30)
Steps completed (range 0-12) 2.17 (2.94) 2.42 (2.03) 3.41 (2.80) 4.18 (3.34)

Dichotomous Variables Baseline:
Percentage
(N=508)
7 weeks:
Percentage
(N=410)
6 months:
Percentage
(N=379)
12 months:
Percentage
(N=384)

Use of a sponsor 26% 65% 67% 59%
Service work 50% 64% 60% 59%
Reading the literature 76% 92% 79% 71%
Use of a home group 41% 60% 63% 64%