Association of Non-cigarette Tobacco Product Ever Use With Subsequent Cigarette Use in Overall Sample, Population Assessment of Tobacco, and Health Study, 2013–2018 (n = 29 788)a
| . | Cigarette ever use . | Cigarette past-30-day use . | ||
|---|---|---|---|---|
| Use at exposure wave b . | Weighted, unadjusted cigarette ever use, %c . | OR (95% CI)d . | Weighted, unadjusted cigarette past 30-d use, %c . | OR (95% CI)d . |
| E-cigarette | ||||
| Never | 3.2 | 1 [Reference] | 1.5 | 1 [Reference] |
| Ever | 17.2 | 2.76 (2.21–3.45) | 8.8 | 2.72 (2.00–3.68) |
| Cigar | ||||
| Never | 3.8 | 1 [Reference] | 1.8 | 1 [Reference] |
| Ever | 20.4 | 2.00 (1.42–2.80) | 10.9 | 1.91 (1.19–3.07) |
| Other | ||||
| Never | 3.5 | 1 [Reference] | 1.6 | 1 [Reference] |
| Ever | 15.2 | 1.66 (1.28–2.14) | 8.1 | 1.83 (1.26–2.65) |
| . | Cigarette ever use . | Cigarette past-30-day use . | ||
|---|---|---|---|---|
| Use at exposure wave b . | Weighted, unadjusted cigarette ever use, %c . | OR (95% CI)d . | Weighted, unadjusted cigarette past 30-d use, %c . | OR (95% CI)d . |
| E-cigarette | ||||
| Never | 3.2 | 1 [Reference] | 1.5 | 1 [Reference] |
| Ever | 17.2 | 2.76 (2.21–3.45) | 8.8 | 2.72 (2.00–3.68) |
| Cigar | ||||
| Never | 3.8 | 1 [Reference] | 1.8 | 1 [Reference] |
| Ever | 20.4 | 2.00 (1.42–2.80) | 10.9 | 1.91 (1.19–3.07) |
| Other | ||||
| Never | 3.5 | 1 [Reference] | 1.6 | 1 [Reference] |
| Ever | 15.2 | 1.66 (1.28–2.14) | 8.1 | 1.83 (1.26–2.65) |
e-cigarette, electronic cigarette; OR, odds ratio; CI, confidence interval.
aPerson-interval count. Intervals included respondents with data for at least two consecutive exposure wave and outcome waves, creating the potential for up to three time-varying within-person observations per respondent (W1-W2, W2-W3, W3-W4).
bExposure wave is defined as the first wave within each specific interval. Youths were considered to have prior non-cigarette tobacco use if they started using e-cigarettes, cigars, or other non-cigarette tobacco products prior to interval exposure wave.
cPercentages were weighted using the most recent sample weight available per person. Guidelines for the Restricted-Use Files of the Population Assessment of Tobacco and Health Study prohibit the reporting of cell counts.
dRegression models were adjusted for sex, age, race/ethnicity, parental education level (bachelors or higher), ever alcohol use, ever marijuana use, ever prescription drug abuse, interval, and cigarette susceptibility.
Association of Non-cigarette Tobacco Product Ever Use With Subsequent Cigarette Use in Overall Sample, Population Assessment of Tobacco, and Health Study, 2013–2018 (n = 29 788)a
| . | Cigarette ever use . | Cigarette past-30-day use . | ||
|---|---|---|---|---|
| Use at exposure wave b . | Weighted, unadjusted cigarette ever use, %c . | OR (95% CI)d . | Weighted, unadjusted cigarette past 30-d use, %c . | OR (95% CI)d . |
| E-cigarette | ||||
| Never | 3.2 | 1 [Reference] | 1.5 | 1 [Reference] |
| Ever | 17.2 | 2.76 (2.21–3.45) | 8.8 | 2.72 (2.00–3.68) |
| Cigar | ||||
| Never | 3.8 | 1 [Reference] | 1.8 | 1 [Reference] |
| Ever | 20.4 | 2.00 (1.42–2.80) | 10.9 | 1.91 (1.19–3.07) |
| Other | ||||
| Never | 3.5 | 1 [Reference] | 1.6 | 1 [Reference] |
| Ever | 15.2 | 1.66 (1.28–2.14) | 8.1 | 1.83 (1.26–2.65) |
| . | Cigarette ever use . | Cigarette past-30-day use . | ||
|---|---|---|---|---|
| Use at exposure wave b . | Weighted, unadjusted cigarette ever use, %c . | OR (95% CI)d . | Weighted, unadjusted cigarette past 30-d use, %c . | OR (95% CI)d . |
| E-cigarette | ||||
| Never | 3.2 | 1 [Reference] | 1.5 | 1 [Reference] |
| Ever | 17.2 | 2.76 (2.21–3.45) | 8.8 | 2.72 (2.00–3.68) |
| Cigar | ||||
| Never | 3.8 | 1 [Reference] | 1.8 | 1 [Reference] |
| Ever | 20.4 | 2.00 (1.42–2.80) | 10.9 | 1.91 (1.19–3.07) |
| Other | ||||
| Never | 3.5 | 1 [Reference] | 1.6 | 1 [Reference] |
| Ever | 15.2 | 1.66 (1.28–2.14) | 8.1 | 1.83 (1.26–2.65) |
e-cigarette, electronic cigarette; OR, odds ratio; CI, confidence interval.
aPerson-interval count. Intervals included respondents with data for at least two consecutive exposure wave and outcome waves, creating the potential for up to three time-varying within-person observations per respondent (W1-W2, W2-W3, W3-W4).
bExposure wave is defined as the first wave within each specific interval. Youths were considered to have prior non-cigarette tobacco use if they started using e-cigarettes, cigars, or other non-cigarette tobacco products prior to interval exposure wave.
cPercentages were weighted using the most recent sample weight available per person. Guidelines for the Restricted-Use Files of the Population Assessment of Tobacco and Health Study prohibit the reporting of cell counts.
dRegression models were adjusted for sex, age, race/ethnicity, parental education level (bachelors or higher), ever alcohol use, ever marijuana use, ever prescription drug abuse, interval, and cigarette susceptibility.
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