Table 2

Rates of sustained abstinence from smoking for 1 week, 1 month, 3 months, 6 months, and 1 year and level of significance of differences between the two groups

Sustained abstinenceASAS+NRTp value (χ2 test)Odds ratio (95% CI)
AS=advice and support; NRT = nicotine replacement therapy.
For 1 week: 110/245 (45%)36/109 (33%)74/136 (54%)<0.0012.42 (1.44 to 4.08)
For 1 month: 78/245 (32%)28/109 (26%)50/136 (37%)0.0731.68 (0.974 to 2.92)
For 3 months: 57/245 (23%)22/109 (20%)35/136 (26%)0.3621.37 (0.75 to 2.51)
For 6 months: 37/245 (15%)15/109 (14%)22/136 (16%)0.7201.21 (0.59 to 2.46)
For 1 year: 35/245 (14%)15/109 (14%)20/136 (15%)0.8571.08 (0.52 to 2.23)