Table 2.

Purposive sample.

Characteristics	Randomization number
	10	12	14	25	27	34	53	75	106	509
Age (years)	77	54	68	71	37	45	60	65	37	58
Sex (m: male; f: female)	m	m	m	f	f	m	m	f	m	m
Education level	Lowa	Mid/highb	Mid/high	Low	Low	Mid/high	Low	Mid/high	Low	Mid/high
Internet skillsc	28	34	37	38	38	46	36	40	40	39
Nicotine dependenced	5	7	4	6	7	4	3	2	7	6
#Adherence F2Fe	3	4	6	5	2	3	5	2	8	2
#Adherence Webf	3	2	8	2	0	3	6	9	7	2
#Adherence BSCTg	6	6	14	7	2	6	11	11	15	4
Adherence F2Fh	N	N	Y	Y	N	N	Y	N	Y	N
Adherence Webi	N	N	Y	N	N	N	Y	Y	Y	N
Adherence BSCTj	N	N	Y	N	N	N	Y	N	Y	N
Counselork	A	B	B	B	B	A	A	C	C	B
Stopped smokingl	Yes	No	Yes	No	No	No	Yes	No	Yes	No

^aLow: lower than vocational education and training.

^bMid/high: vocational education and training or higher.

^cInternet skills: range 10-60; higher number indicates better skills.

^dNicotine dependence: Fagerström, range 0-10; higher numbers indicate higher nicotine dependency.

^e#Adherence F2F: adherence to face-to-face (F2F) sessions, range 0-8, based on the 8 activities belonging to F2F sessions; higher number indicates higher adherence.

^f#Adherence Web: adherence to Web sessions, range 0-10, based on the 10 activities belonging to Web sessions; higher number indicates higher adherence.

^gAdherence BSCT: adherence to blended smoking cessation treatment (BSCT) in general, sum of #Adherence F2F and #Adherence Web, range 0-18; higher number indicates higher adherence.

^hAdherence F2F: categorical classification of adherence to the F2F sessions based on a 60% threshold (Y= adherent; N=nonadherent).

ⁱAdherence Web: categorical classification of adherence to the Web sessions based on a 60% threshold (Y= adherent; N=nonadherent).

^jAdherence BSCT: categorical classification of adherence to BSCT in general based on a 60% threshold (Y= adherent; N=nonadherent).

^kCounselor: who carried out the treatment.

^lStopped smoking: self-reported abstinence.