Table 1.
Mean percent prevalence with 95% confidence intervals of asthma, wheeze, and bronchitis among children aged 2–16 living in homes with gas stoves by different stove use habits 1
| Ever diagnosed with asthma (N = 7,390) | Wheeze in past 12 months (N = 7,392) | Ever diagnosed with chronic bronchitis (N = 7,390) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Variable | No. cases | Prevalence (95% CI) | P-value 2 | No. cases | Prevalence (95% CI) | P-value 2 | No. cases | Prevalence (95% CI) | P-value 2 |
| Total cases | 572 | 9.48 (8.87, 11.30) | 1,422 | 16.58 (14.88, 18.28) | 329 | 4.05 (3.08, 5.03) | |||
| Vent used w/gas stove | n = 7,378 | n = 7,380 | n = 7,378 | ||||||
| Yes | 260 | 8.07 (6.11, 10.59) | 0.11 | 643 | 14.20 (11.79, 17.01) | 0.01 | 134 | 3.17 (2.20, 4.53) | 0.02 |
| No | 310 | 11.09 (8.42, 14.47) | 776 | 19.30 (16.90, 21.95) | 194 | 5.08 (3.85, 6.67) | |||
| Gas stove used for heating | n = 7,346 | N = 7,348 | n = 7,346 | ||||||
| Yes | 117 | 13.54 (9.46, 19.03) | 0.04 | 278 | 23.26 (18.35, 29.03) | 0.003 | 74 | 4.48 (2.73, 7.25) | 0.62 |
| No | 447 | 8.86 (7.16, 10.92) | 1,133 | 15.70 (14.05, 17.52) | 251 | 3.94 (3.03, 5.09) | |||
| Vent and Stove Use | n = 7,334 | n = 7,336 | n = 7,334 | ||||||
| Vent not used and stove used for cooking and heating | 78 | 13.63 (8.59, 20.97) | 0.13 | 197 | 25.07 (18.58, 32.91) | 0.003 | 60 | 5.43 (3.51, 8.33) | 0.10 |
| Vent used and stove used for cooking and heating | 39 | 13.40 (7.41, 23.03) | 81 | 20.14 (13.84, 28.38) | 14 | 2.82 (1.09, 7.08) | |||
| Vent not used and stove only used for cooking | 224 | 10.36 (7.48, 14.18) | 568 | 18.13 (15.59, 20.99) | 130 | 4.87 (3.52, 6.72) | |||
| Vent used and stove only used for cooking | 221 | 7.67 (5.63, 10.35) | 562 | 13.76 (11.32, 16.63) | 120 | 3.20 (2.19, 4.65) | |||
1Unweighted sample sizes and weighted proportions (prevalence).
2P-values obtained from χ2 test.