Table 1

Baseline characteristics of participants by treatment groups

Quit.ie (n=149)AC (n=151)
Female, n (%)68 (45.6)67 (44.4)
Age, median (IQR)44.0 (38.0–51.0)44.0 (36.0–52.0)
Initial weight, median (IQR), kg80.8 (69.0–93.9)79.8 (69.4–91.7)
Postsecondary and higher education, n (%)104 (69.8)105 (69.5)
Baseline CO reading, mean (SD), ppm20.4 (10.5)22.1 (11.6)
Time to first cigarette, n (%)
 ≤5 min42 (28.2)56 (37.1)
 6–30 min66 (44.3)61 (40.4)
 >31 min41 (27.5)34 (22.5)
Prior use of e-cigarettes, n (%)72 (48.3)75 (49.7)
Previous quit attempts, n (%)
 None6 (4.2)4 (2.7)
 1–363 (43.8)69 (46.3)
 4–961 (42.4)59 (39.6)
 10 and over14 (9.7)17 (11.4)
No of cigarettes smoked per day, median (IQR)20.0 (15.0–22.0)20.0 (15.0–25.0)
How many years are you smoking, median (IQR)28.0 (22.0–34.0)26.0 (20.0–35.0)
Readiness to quit score, median (IQR)27.0 (24.5–29.0)27.0 (25.0–29.0)
  • AC, Allen Carr’s Easyway to Stop Smoking; CO, carbon monoxide.