Logo of nihpaAbout Author manuscriptsSubmit a manuscriptHHS Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
Am J Prev Med. Author manuscript; available in PMC 2009 June 17.
Published in final edited form as:
Am J Prev Med. 2008 May; 34(5): 373–381.
doi: 10.1016/j.amepre.2007.12.024

Table 3

Adjusted smoking-cessation ratesa of each intervention component and selected interactions. Per-protocol analysis (n=944)

FactorAdjusted 6-month cessation ratea(%)χ2p
Success story5.580.018
 High depth (n=488)34.3
 Low depth (n=456)26.8
 High personalization (n=481)33.6
 Low personalization (n=463)27.4
Efficacy expectations1.550.213
 High depth (n=466)32.4
 Low depth (n=478)28.5
Outcome expectations1.370.242
 High depth (n=494)32.2
 Low depth (n=450)28.7
 Multiple (n=487)29.6
 Single (n=457)31.3
Success story × education4.240.040
 Low-depth story × ≤HS graduate (n=167)24.9
 Low-depth story × >HS graduate (n=289)28.8
 High-depth story × ≤HS graduate (n=178)39.1
 High-depth story × >HS graduate (n=310)29.8
Source × efficacy interaction3.700.054
 Low personalized source × low-depth efficacy (n=243)23.1
 Low personalized source × high-depth efficacy (n=220)32.2
 High personalized source × low-depth efficacy (n=235)34.7
 High personalized source × high-depth efficacy (n=246)32.6
aSeven-day point-prevalence abstinence. Cessation rates adjusted for baseline characteristics of Table 2. Missing data in these characteristics reduced the sample size from 954 to 944 for these analyses.

HS, high school