Table 1

Participant characteristics

QCI (n=124)Control (n=148)Overall (n=272)P value
Age, mean (SD)60.1 (10.4)59.4 (13.6)59.7 (12.2)0.652*
Sex, n (%)0.901†
Male76 (61.3)89 (60.1)165 (60.7)
Female48 (38.7)59 (39.9)107 (39.3)
Community population size, n (%)0.716†
Large (>100 000)65 (52.4)81 (54.7)146 (53.7)
Medium (30 000–99 000)55 (44.4)64 (43.2)119 (43.8)
Small (<30 000)4 (3.2)3 (2.0)7 (2.6)
Cigarettes smoked per day at baseline, mean (SD)20.7 (11.5)18.5 (9.8)19.5 (10.7)0.100*
Missing, n (%)2 (1.6)10 (6.7)12 (4.6)
Lives with other smokers, n (%)0.235†
Yes40 (34.2)54 (41.5)94 (38.1)
No77 (65.8)76 (58.5)153 (61.9)
Missing7 (5.6)18 (12.2)25 (10.1)
History of mood disorder, n (%)0.240†
Yes29 (23.8)28 (18.9)57 (21.2)
No93 (75.0)119 (80.9)212 (78.8)
Missing2 (1.6)1 (0.7)3 (1.1)
History of anxiety disorder, n (%)0.101†
 Yes21 (17.2)17 (11.5)38 (14.1)
No101 (82.7)130 (88.4)231 (85.9)
Missing2 (1.6)1 (0.7)3 (1.1)
Education, n (%)0.180†
Elementary school or less8 (6.5)10 (6.8)18 (6.6)
Some high school30 (24.2)32 (21.6)62 (22.8)
High school diploma36 (29.0)34 (23.0)70 (25.7)
Some postsecondary9 (7.3)21 (14.2)30 (11.0)
College or trade certificate26 (21.0)34 (23.0)60 (22.1)
University degree15 (12.1)17 (11.5)32 (11.8)
Income‡, n (%) <$C25 00028 (22.6)21 (14.2)49 (18.0)0.496†
$C25 000–$C50 00043 (34.7)59 (39.9)102 (37.5)
$C50 000–$C75 00015 (12.1)20 (13.5)35 (12.9)
>$C75 00021 (16.9)25 (16.9)46 (16.9)
Prefer not to answer17 (13.7)23 (15.5)40 (14.7)
Cannabis use in past 6 months, n (%)0.948†
Yes23 (18.5)26 (18.1)49 (18.3)
No101 (81.5)118 (81.9)219 (81.7)
Missing4 (2.8)4 (1.5)
Alcohol drinks per week, n (%)0.952†
Does not drink alcohol58 (47.9)71 (48.6)129 (48.3)
< 114 (11.6)14 (9.6)28 (10.5)
1–5 (female); 1–8 (male)26 (21.5)35 (24.0)61 (22.8)
6–10 (female); 9–15 (male)13 (10.7)13 (8.9)26 (9.7)
≥11 (female); ≥16 (male)10 (8.3)13 (8.9)23 (8.6)
Missing3 (2.4)2 (1.4)5 (1.9)
  • *Independent samples t-test

  • †Pearson χ2 test

  • ‡$C, 2017–1

  • QCI, Quit Card Intervention.