Table 2.
Adjusted odds ratio for students who reported using e-cigarettes at least once in the past year compared to those who did not: Multivariable models for 2017 and 2019.
| Elementary School | 2017 |
2019 |
Change from 2017 to 2019 |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N = 1767 |
N = 1869 |
||||||||||||
| Variables |
Odds Ratio | 95% CI | p-value | Odds ratio | 95% CI | p-value | Change | 95% CI | p-value | ||||
| Grade | Grade 7 | ||||||||||||
| Grade 8 | 2.20 | (0.93,5.19) | 0.071 | 2.33 | (1.19,4.56) | 0.014 | 0.13 | (−3.07,2.69) | 0.917 | ||||
| Sex | Male | ||||||||||||
| Female | 0.27 | (0.11,0.65) | 0.004 | 0.68 | (0.42,1.10) | 0.114 | 0.41 | (−0.05,0.86) | 0.065 | ||||
| Canada all my life | Yes | ||||||||||||
| No | 0.30 | (0.08,1.05) | 0.058 | 1.07 | (0.55,2.08) | 0.849 | 0.77 | (−0.14,1.80) | 0.074 | ||||
| English language only | Yes | ||||||||||||
| No | 2.00 | (0.87,4.62) | 0.101 | 2.00 | (0.99,4.02) | 0.052 | 0.00 | (−2.80,2.32) | 0.996 | ||||
| Race | White | ||||||||||||
| Other | 0.77 | (0.36,1.66) | 0.506 | 0.70 | (0.40,1.23) | 0.208 | −0.08 | (−1.01,0.60) | 0.826 | ||||
| School performance | 90 or more | ||||||||||||
| 88–89 | 1.99 | (0.56,7.04) | 0.281 | 1.70 | (0.73,3.97) | 0.219 | −0.29 | (−5.44,2.39) | 0.835 | ||||
| 70–79 | 0.83 | (0.38,1.80) | 0.627 | 1.05 | (0.63,1.75) | 0.850 | 0.22 | (−0.84,1.06) | 0.608 | ||||
| 69 or less | 0.71 | (0.16,3.08) | 0.639 | 1.42 | (0.49,4.13) | 0.510 | 0.72 | (−1.83,3.48) | 0.442 | ||||
| overall | 0.689 | 0.422 | |||||||||||
| Living arrangements | One household | ||||||||||||
| More than one | 5.58 | (2.50,12.48) | <0.001 | 1.90 | (0.93,3.86) | 0.077 | −3.69 | (−10.65,-0.03) | 0.045 | ||||
| Smoker | No | ||||||||||||
| Yes | 58.98 | (16.55,210.19) | <0.001 | 54.14 | (14.97,195.78) | <0.001 | −4.84 | (−161.04,143.02) | 0.925 | ||||
| Secondary School | 2017 |
2019 |
|||||||||||
| N = 3247 |
N = 4025 |
||||||||||||
| Variables | Odds Ratio | 95% CI | p-value | Odds Ratio | 95% CI | p-value | Change | 95% CI | p-value | ||||
| Grade | 9 | ||||||||||||
| 10 | 1.43 | (0.95,2.14) | 0.083 | 1.28 | (0.94,1.74) | 0.116 | −0.15 | (−0.94,0.51) | 0.665 | ||||
| 11 | 1.18 | (0.78,1.78) | 0.437 | 1.25 | (0.90,1.73) | 0.173 | 0.06 | (−0.46,0.59) | 0.818 | ||||
| 12 | 0.87 | (0.52,1.47) | 0.610 | 1.26 | (0.82,1.93) | 0.284 | 0.39 | (−0.35,1.14) | 0.280 | ||||
| overall | 0.041 | <0.001 | |||||||||||
| Sex | Male | ||||||||||||
| Female | 0.71 | (0.50,1.01) | 0.055 | 1.11 | (0.88,1.41) | 0.366 | 0.40 | (0.02,0.77) | 0.013 | ||||
| Canada all my life | Yes | ||||||||||||
| No | 0.76 | (0.48,1.18) | 0.212 | 0.72 | (0.50,1.04) | 0.083 | −0.03 | (−0.51,0.39) | 0.886 | ||||
| English language only |
Yes | ||||||||||||
| No | 1.11 | (0.83,1.50) | 0.482 | 0.89 | (0.66,1.18) | 0.413 | −0.22 | (−0.67,0.19) | 0.281 | ||||
| Race | White | ||||||||||||
| Other | 0.73 | (0.52,1.04) | 0.078 | 0.54 | (0.40,0.71) | <0.001 | −0.20 | (−0.53,0.08) | 0.170 | ||||
| School performance | 90 or more | ||||||||||||
| 80–89 | 1.34 | (0.71,2.52) | 0.366 | 2.04 | (1.48,2.81) | <0.001 | 0.70 | (−0.61,1.69) | 0.239 | ||||
| 70–79 | 1.44 | (1.07,1.94) | 0.017 | 1.13 | (0.86,1.48) | 0.389 | −0.31 | (−0.88,0.20) | 0.228 | ||||
| 69 or less | 1.48 | (0.88,2.47) | 0.137 | 1.35 | (0.90,2.03) | 0.148 | −0.13 | (−1.22,0.77) | 0.786 | ||||
| overall | <0.001 | <0.001 | |||||||||||
| Living arrangements | One household | ||||||||||||
| More than one | 1.50 | (1.01,2.24) | 0.046 | 1.28 | (0.95,1.73) | 0.108 | −0.22 | (−1.03,0.44) | 0.520 | ||||
| Smoker | No | ||||||||||||
| Yes | 8.17 | (5.31,12.55) | <0.001 | 17.53 | (11.09,27.71) | <0.001 | 9.36 | (1.57,19.94) | 0.016 | ||||
| CI = Confidence Interval | |||||||||||||