Table 3

Mean score of five indicators of nicotine dependence symptoms by smoking status and quit attempts among grade 7 past three month smokers (n=233)

nMedian cig/week (n)ICD-10 mean (SD)HONC mean (SD)ND/cravings mean (SD)Self medication mean (SD)Withdrawal mean (SD)
*n=2 missing.
†n=23 missing.
‡Adjusted for smoking status.
Smoking status*
Triers65 0.00.3 (0.6)1.6 (1.9)4.1 (4.1)0.4 (1.0)0.8 (1.4)
Sporadic68 0.00.6 (0.8)3.6 (2.7)8.6 (5.2)1.4 (2.0)2.3 (3.3)
Weekly55 5.01.4 (1.2)5.5 (2.6)15.0 (6.1)2.4 (2.3)3.5 (3.9)
Daily4330.03.4 (1.9)8.4 (2.4)25.8 (7.0)5.7 (3.2)8.4 (5.2)
p Value0.00010.00010.00010.00010.0001
R2, %50.249.366.141.535.0
Quit attempts†
Tried, remained non-smoking4900.2 (0.6)2.0 (2.3)5.0 (4.2)1.0 (2.0)1.7 (3.0)
Never tried to quit7000.7 (1.4)4.1 (2.9)11.2 (8.7)1.8 (2.8)2.8 (4.4)
Tried to quit but failed9152.3 (1.5)6.5 (3.0)18.2 (8.6)3.3 (3.1)5.0 (4.7)
p Value0.00010.00010.00010.00010.0001
R2, %32.529.431.511.09.4
Adjusted R2 square, %‡49.150.765.137.030.0