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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

From: A cross-sectional study of the association between ventilation of gas stoves and chronic respiratory illness in U.S. children enrolled in NHANESIII

 

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)

 
  1. 1Unweighted sample sizes and weighted proportions (prevalence).
  2. 2P-values obtained from χ2 test.