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. 2014 Feb;104(2):e127–e133. doi: 10.2105/AJPH.2013.301502

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© American Public Health Association 2014

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FIGURE 4— — Successful quitting and nonspecific psychological distress, mediated by withdrawal symptoms and nicotine dependence: Assessing Hardcore Smoking Survey, Waves 1 and 2; 2004–2006.

Note. Nicotine withdrawal (NW) symptom severity and dependence fully mediated the negative relationship between nonspecific psychological distress (NSPD) and quit success among smokers with NSPD. Values are parameter estimates from regression modeling. The figure is derived from a national sample of cigarette smokers who made a quit attempt between 2 waves of data collection (n = 368). Both the mediation pathways were statistically significant (P < .05). We adjusted estimates for age, gender, and education.

*P < .05; **P < .01; ***P < .001.