Table 1.
Girls | Boys | Difference by sex, p value | All | ||||
n | % | n | % | n | % | ||
Parental smoking at age 14–15 years | |||||||
Father smoker | 129/1034 | 12.5 | 127/1093 | 11.6 | 0.544 | 256/2127 | 12.0 |
Mother smoker | 115/1036 | 11.1 | 146/1092 | 13.4 | 0.111 | 261/2128 | 12.3 |
Tobacco use at age 14–15 years | |||||||
Never smoker | 932/1053 | 88.5 | 1012/1108 | 91.3 | 1944/2161 | 90.0 | |
Occasional smoker | 81/1053 | 7.7 | 67/1108 | 6.0 | 148/2161 | 6.8 | |
Daily smoker | 40/1053 | 3.8 | 29/1108 | 2.6 | 0.083 | 69/2161 | 3.2 |
Never snus user | 1036/1055 | 98.2 | 1034/1109 | 93.2 | 2070/2164 | 95.7 | |
Occasional snus user | 11/1055 | 1.0 | 19/1109 | 1.7 | 30/2164 | 1.4 | |
Daily snus user | 8/1055 | 0.8 | 56/1109 | 5.0 | <0.001 | 64/2164 | 3.0 |
Tobacco use at age 19 years | |||||||
Never smoker | 666/1044 | 63.8 | 662/1105 | 59.9 | 1328/2149 | 61.8 | |
Former smoker | 14/1044 | 1.3 | 15/1105 | 1.4 | 29/2149 | 1.3 | |
Occasional smoker | 267/1044 | 25.6 | 346/1105 | 31.3 | 613/2149 | 28.5 | |
Daily smoker | 97/1044 | 9.3 | 82/1105 | 7.4 | 0.021 | 179/2149 | 8.3 |
Daily snus user | 65/1052 | 6.2 | 247/1111 | 22.2 | <0.001 | 312/2163 | 14.4 |
E-cigarette use at age 19 years | |||||||
Ever tried/used e-cigarettes | 158/1049 | 15.1 | 302/1096 | 27.6 | <0.001 | 460/2145 | 21.4 |
Current e-cigarette user | 36/1049 | 3.4 | 54/1096 | 4.9 | 0.084 | 90/2145 | 4.2 |
*Individuals with missing answers in the individual questions about tobacco use and e-cigarette use were excluded from the analysis.
e-cigarette, electronic cigarette.