Does the Regulatory Environment for E-Cigarettes Influence the Effectiveness of E-Cigarettes for Smoking Cessation?: Longitudinal Findings From the ITC Four Country Survey.

Nicotine Tob Res · 2017 · PMC5896424 · PMID 28340053

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did not reach statistical significanceno p-value reported

Those who quit using NRT or a combination help, or responded DK were also more likely to report 30-day sustained abstinence but this did not reach statistical significance compared to no help (OR = 1.64, 1.51, and 1.54, respectively).

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