There was high certainty that quit rates were higher in people randomized to nicotine e-cigarettes than in those randomized to nicotine replacement therapy (risk ratio [RR]1.63, 95% confidence interval [CI] 1.30 to 2.04) and moderate-certainty evidence, limited by imprecision, that quit rates were higher in people randomized to nicotine e-cigarettes than to e-cigarettes without nicotine (RR 1.94, 95% CI 1.21 to 3.13)
Satchell T, Diaz MC, Stephens D, Bertrand A, Schillo BA, Whitsel LP
doi:10.1016/S0140-6736(12)61720-6 32
Although Agematsu no longer smokes, this habit of wandering and collecting has been harder to break: hes been committed to it since 1996
Quitting smoking is often difficult, but the more one tries, the faster the recovery and the lesser the withdrawal symptoms