Table 1.
Transition prevalences (and 95% Wilson confidence intervals) for dual users at baseline among rural and urban cohort members.a
| Follow-up category |
Total | χ2 (p-value)b |
||||||
|---|---|---|---|---|---|---|---|---|
| At least some days/week |
<SDW | |||||||
| Comb | SLT | ENDS | Dual | |||||
| 6 month transition | Rural | 43% (31.8, 55.2) |
6% | 3% | 43% (31.8, 55.2) |
5% | 65 | 2.99 (0.560) |
| Urban | 43% (32.1, 54.0) |
4% | 9% | 37% (27.3, 48.7) |
7% | 75 | ||
| 12 month transition | Rural | 57% (44.9, 68.6) |
11% | 3% | 27% (17.6, 39.0) |
2% | 63 | 13.61 (0.009) |
| Urban | 42% (31.1, 53.8) |
3% | 13% | 30% (20.9, 42.1) |
12% | 69 | ||
| 18 month transition | Rural | 59% (46.5, 70.5) |
10% | 5% | 24% (14.2, 34.9) |
3% | 61 | 6.89 (0.142) |
| Urban | 49% (37.5, 61.1) |
5% | 14% | 22% (13.3, 33.0) |
11% | 65 | ||
Comb = Exclusive combustible; SLT = Exclusive smokeless; ENDS = Exclusive e-cigarette; Dual = Current use of two or more categories; <SDW = Less than some days per week.
a
Confidence intervals were suppressed for those percentages <20%.
b
The chi-squared statistic with 4° of freedom simultaneously compares the corresponding transition probabilities for the rural and urban cohort members.