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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Tob Control. 2015 Feb 19;25(2):181–187. doi: 10.1136/tobaccocontrol-2014-051979

Table 4.

Association of HWL reactions with quit intentions showing both main and interaction effects for the combined model and main effects for the stratified models by pre and post-policy implementation.

Independent variables Quit intentions
Combined model Stratified model by survey year

B (SE) a Pre (2011) Post (2013)
n=1499-1504 b B (SE) a B (SE) a
N=2159-2169 n=1085-1090 b n=1073-1079 b

Notice .04 (.02) .03 (.02) .12 (.02)***
Notice × wave .08 (.03)** -- --

Read .03 (.02) .02 (.02) .11 (.02)***
Read × wave .08 (.03)* -- --

Cognitive reactions .20 (.03)*** .19 (.04)*** .33 (.03)***
Cognitive reactions × wave .10 (.04)* -- --

Forgo .11 (.04)* .11 (.04)** .16 (.05)***
Forgo × wave .05 (.06) -- --

Avoid .04 (.07) .06 (.08) .09 (.06)
Avoid × wave .04 (.09) -- --

Attentional orientation .04 (.06) .05 (.06) .23 (.06)***
Attentional orientation × wave .17 (.08)* -- --

B, regression coefficients; SE, standard errors; --, not applicable;

a

, regression coefficients based on separate models for each independent variable where estimates were adjusted for age, sex, education, income, cigarettes per day, past year quit attempts, survey mode (phone vs web), survey year, and year of recruitment for the combined model and for the same covariates except survey year for the stratified models;

b

, variation in n is due to missing data on one or more independent variables included in the models;

n, number of unique individuals; N, number of person-wave observations;