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), kg	80.8 (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), ppm	20.4 (10.5)	22.1 (11.6)
Time to first cigarette, n (%)
≤5 min	42 (28.2)	56 (37.1)
6–30 min	66 (44.3)	61 (40.4)
>31 min	41 (27.5)	34 (22.5)
Prior use of e-cigarettes, n (%)	72 (48.3)	75 (49.7)
Previous quit attempts, n (%)
None	6 (4.2)	4 (2.7)
1–3	63 (43.8)	69 (46.3)
4–9	61 (42.4)	59 (39.6)
10 and over	14 (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.