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. Author manuscript; available in PMC: 2022 Jan 7.
Published in final edited form as: Clin Psychol Sci. 2021 Apr 26;9(6):995–1020. doi: 10.1177/2167702621994551

Table 8.

Abstinence and Smoking Rates for Participants in the Maintenance Study (N=513) Who Were Categorized on the Basis of a Change Index Intended to Measure Likelihood of Change

Abstinence Rates Smoking Rates
Number of
Intervention
Components		 Low Risk,
High Change
Likelihood		 High Risk,
Low Change
Likelihood		 Low Risk,
High Change
Likelihood		 High Risk,
Low Change
Likelihood
0-2 49.2%
(58/118)		 24%
(33/137)		 50.8%
(60/118)		 75.9%
(104/137)
3 54.5%
(42/77)		 32.6%
(30/92)		 45.5%
(35/77)		 67.4%
(62/92)
4-5 45.1%
(23/51)		 39.5%
(15/38)		 54.9%
(28/51)		 60.5%
(23/38)
3-5 50.8%
(65/128)		 34.6%
(45/130)		 49.2%
(63/128)		 65.4%
(85/130)

Note: The change index used comprised gender (female = 1), successful prior abstinence from smoking (> 1 month), and the number of abstinence days in the first 2 weeks. The change index score was dichotomized to low vs. high based on a receiver operating characteristic curve (ROC) analysis, which yielded a cut-off score = 12.