Proactive Electronic Visits for Smoking Cessation and Chronic Obstructive Pulmonary Disease Screening in Primary Care: Randomized Controlled Trial of Feasibility, Acceptability, and Efficacy.

At 3 months, e-visit participants were 3.1 times more likely to have reduced their cigarettes per day by at least 50% (95% CI 1.2-8.2; P =.02), with a similar trend toward significance at 1 month (OR 4.1, 95% CI 0.9-18.8; P =.07).

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