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. 2014 Sep 19;17(5):580–585. doi: 10.1093/ntr/ntu188

Table 2.

Sample Characteristics (N = 191)

Definition % (N)
Smoker type
 Light 1–10 cigarettes/day 35.1% (67)
Mean number of cigarettes/day (SD) 7.0 (3.1)
 Moderate 11–20 cigarettes/day 38.8% (74)
Mean number of cigarettes/day (SD) 17.1 (2.9)
 Heavy 21+ cigarettes/day 26.2% (50)
Mean number of cigarettes/day (SD) 32.1 (7.8)
 Missing Missing smoking history 8.9% (17)
Smoking cessation
 Quit Respondent ever tried to quit 72.2% (138)
 Attemptsa Mean number of previous quit attempts (SD) 2.2 (1.2)
 Help Respondent ever received help to quit 25.3% (48)
 Motivationb Mean score of motivation to quit (SD) 5.1 (2.7)
Respondent characteristics
 Female 38.7% (74)
 Age In years (SD) 23.0 (6.0)
 Undergraduate student 71.2% (136)
 Graduate student 28.8% (55)

aAmong those who have tried to quit

bRange (1 = very low to 10 = very high)