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. 2019 Apr 30;69(3):298–319. doi: 10.1093/joc/jqz014

Table 1.

Study 1 and Study 2 Participant Characteristics

Study 1 Study 2
N 385 586
Age M = 36.7 M = 46
SD = 11.18 SD = 12.38
Sex Male: 215 (56%) Male: 347 (59%)
Female: 169 (44%) Female: 237 (41%)
Race/ethnicity White (Non-Hispanic): 309 White (Non-Hispanic): 476
Black/African-American Black/African-American
(Non-Hispanic): 35 (Non-Hispanic): 45
Hispanic: 30 Hispanic: 24
Other/more than 1: 10 Other/more than 1: 39
Smoking frequency Every day: 299 (77.6%) Every day: 526 (89.8%)
Some days: 86 (22.34%) Some days: 60 (10.2%)
Quit attempts 0 times: 163 (42.34%) 0 times: 293 (50%)
1–2 times: 127 (33.00%) 1–2 times: 210 (36%)
3–5 times: 5 (13.77%) 3–5 times: 9 (%)
More than 5 times: 42 (10.91%) More than 5 times: 31 (%)