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Percentage of participants in each medication group, VAR + PLAC and VAR + NTX, who quit smoking (bioverified by CO reading of ≤ 5 ppm) at the 26-week assessment. Smoking abstinence at week 26 was significantly higher in the VAR + PLAC condition than the VAR + NTX condition (χ2[1] = 6.22, p=.015).
