Table 2.

Participant Median Ratings (IQR) of IQOS and Juul (N = 22)

Product characteristic	IQOS	Juul	Wilcoxon test, effect size
Did it relieve your urge to smoke (1 = not at all, 10 = extremely well), median (IQR)	6.5 (6.0–9.0)	9.0 (8.0–10.0)	z = −3.23 r = 0.69 p = .001
How quickly did any effect happen? (1 = very slowly, 10 = extremely fast), median (IQR)	7.0 (4.8–8.0)	8.0 (7.0–9.3)	z = −2.75 r = 0.59 p = .006
How much nicotine do you think it delivered? (1 = too little, 5 = just right, 10 = too much), median (IQR)	5.0 (4.0–6.0)	5.5 (5.0–7.0)	z = −1.90 r = 0.40 p = .058
Did you like the taste? (1 = not at all, 10 =extremely), median (IQR)	5.5 (3.0–8.0)	7.0 (3.8–7.3)	z = −0.227 r = 0.05 p = .820
Was it pleasant to use? (1 = not at all, 10 = extremely), median (IQR)	6.5 (4.8–9.0)	7.0 (6.0–10.0)	z = −1.046 r = 0.22 p = .295
How likely would you be to recommend it to friends? (1 = not at all, 10 = extremely), median (IQR)	5.0 (2.0–7.0)	7.0 (6.0–9.3)	z = −2.453 r = 0.52 p =0.014

IQR = interquartile range.