Appendix Table 2.
Variables and categories used in the univariable and multivariable analyses.
| Elementary School | |
|---|---|
| Grade | Grade 7 |
| Grade 8 | |
| Sex | male |
| female | |
| Age | 12 or younger |
| 13 or older | |
| Canada only | Yes |
| No | |
| English only | Yes |
| No | |
| Race | White |
| Other | |
| School performance | 90 or more |
| 80–89 | |
| 70–79 | |
| 69 or less | |
| Living arrangements | One household |
| More than one | |
| Smoker | no |
| yes | |
| Secondary school | |
| Grade | 9 |
| 10 | |
| 11 | |
| 12 | |
| Sex | Male |
| Female | |
| Age | 14 or younger |
| 15 | |
| 16 | |
| 17 or older | |
| Canada only | Yes |
| No | |
| English only | Yes |
| No | |
| Race | White |
| Other | |
| School performance | 90 or more |
| 80–89 | |
| 70–79 | |
| 69 or less | |
| Home | One |
| More than one | |
| Smoker | No |
| Yes |