Table 4 Associations between use of gas heaters and hospital admission for an acute respiratory infection during the first five years of life
Type of heating used in the household | Incidence per 1000 person-years (95% CI) | Crude HR (95% CI) | Adjusted HRa (95% CI) |
|---|---|---|---|
All gas heaters | |||
Use gas heater only | 75.68 (60.70-93.23) | 2.44 (1.92-3.10) | 1.64 (1.29-2.09) |
Use gas heater as well as other forms of heating | 23.92 (20.13-28.20) | 0.77 (0.63-0.94) | 0.82 (0.68-0.99) |
Use other forms of heating only | 31.04 (28.66-33.57) | 1.00 | 1.00 |
Unflued gas heaters | |||
Use unflued gas heater only | 74.23 (52.55-101.84) | 2.36 (1.66-3.35) | 1.48 (1.05-2.09) |
Use unflued gas heater as well as other forms of heating | 23.73 (18.47-30.03) | 0.76 (0.58-0.98) | 0.73 (0.57-0.94) |
Use other forms of heating only | 31.42 (29.21-33.76) | 1.00 | 1.00 |