Table 4 Logistic regression models: effect of previous NSNRT use on quit attempts and smoking behaviour
Follow-up quit attemptUsed NRT at follow-up quit attemptReduced cigarettes smoked per day ⩾50%Quit smoking
OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)
Unweighted (n)1229135113401341
Any past NSNRT to cut down0.89 (0.59 to 1.33)2.28 (1.50 to 3.47)***0.93 (0.62 to 1.38)0.73 (0.43 to 1.24)
Any past NSNRT to delay smoking1.29 (0.73 to 2.29)1.25 (0.67 to 2.34)0.80 (0.43 to 1.49)1.22 (0.60 to 2.50)
Used NRT at quit attempt ⩽12 months before baseline0.82 (0.46 to 1.44)5.85 (3.46 to 9.89)***1.16 (0.72 to 1.88)1.27 (0.73 to 2.20)
Nicotine dependence
Cigarettes per day
    <111.001.001.001.00
    11–200.59 (0.41 to 0.85)**2.07 (1.38 to 3.12)***0.92 (0.66 to 1.27)0.74 (0.51 to 1.09)
    >200.57 (0.35 to 0.94)*2.03 (1.15 to 3.56)*1.61 (1.01 to 2.55)*0.59 (0.33 to 1.06)
1st cigarette <30 minutes after waking0.74 (0.53 to 1.04)1.35 (0.92 to 1.98)0.52 (0.38 to 0.71)***0.55 (0.38 to 0.79)***
Plans to quit
In next 6 months3.72 (2.51 to 5.51)***2.91 (1.86 to 4.56)***1.11 (0.76 to 1.62)1.41 (0.91 to 2.17)
In the next 30 days2.67 (1.91 to 3.73)***1.75 (1.15 to 2.69)**0.85 (0.60 to 1.21)1.04 (0.68 to 1.59)
Made a quit attempt in year before baseline2.74 (1.98 to 3.80)***1.30 (0.89 to 1.90)1.21 (0.89 to 1.65)0.87 (0.60 to 1.27)
Received help from a medical professional at last quit attempt before baseline3.47 (2.00 to 6.03)***3.04 (1.91 to 4.84)***1.33 (0.87 to 2.02)1.24 (0.72 to 2.13)
  • *p<0.05, **p<0.01, ***p<0.001. Models also control for age, sex, race/ethnicity, marital status, education, income and region of the state.