Current wheeze, hay fever, and eczema in relation to indoor environment. Values in parentheses are percentages
| Current wheeze (n=267) (17) | Cough (n=135) (9) | Hay fever (n=317) (21) | Eczema (n=272) (18) | |
|---|---|---|---|---|
| Heating | ||||
| Gas (n=663) (43) | 117 (18) | 68 (10) | 155 (23)4-150 | 118 (18) |
| Electric (n=837) (54.5) | 157 (19) | 81 (10) | 178 (21) | 151 (18) |
| Coal, peat, wood (n=803) (52) | 139 (17) | 64 (8) | 156 (19) | 142 (18) |
| Central heating (n=1018) (66) | 181 (18) | 87 (8.5) | 223 (22) | 194 (19) |
| Stove/Raeburn (n=236) (15) | 37 (16) | 15 (6) | 38 (16) | 34 (14) |
| Open fire (n=638) (41.5) | 111 (17) | 55 (9) | 125 (20) | 112 (17.5) |
| Cooking method | ||||
| Gas (n=382) (25) | 57 (15) | 32 (8) | 73 (19) | 56 (15) |
| Electric (n=1252) (81.5) | 224 (18) | 110 (9) | 261 (21) | 229 (18) |
| Microwave oven (n=1009) (66) | 177 (17.5) | 98 (10) | 214 (21) | 173 (17) |
| Stove/Raeburn (n=173) (11) | 27 (16) | 10 (6) | 29 (17) | 23 (13) |
| Coal, peat, wood (n=60) (4) | 9 (15) | 5 (8) | 12 (20) | 9 (15) |
| Insulation | ||||
| Wall to wall carpet (n=1406) (91.5) | 250 (18) | 122 (9) | 293 (21) | 252 (18) |
| Double glazing (n=1012) (66) | 177 (17.5) | 76 (7.5)† | 215 (21) | 204 (20)‡ |
| Roof, cavity wall insulation (n=1129) (73) | 200 (18) | 99 (9) | 238 (21) | 211 (19) |
| House within 100 yards of farm/croft (n=486) (32) | 95 (19.5) | 43 (9) | 96 (20) | 79 (16) |
| Damp (n=167) (11) | 30 (18) | 22 (13)§ | 42 (25) | 25 (15) |
| Mould (n=109) (7) | 20 (18) | 16 (15)∥ | 24 (22) | 20 (18) |
↵4-150 χ 2=5.31, df=1, p=0.02, relative risk 1.26, 95% confidence interval (CI) 1.04 to 1.53;† χ 2=5.55, df=1, p=0.018, relative risk 0.675, 95% CI 0.486 to 0.936; ‡ χ 2=12.92, df=1, p=0.00032, relative risk 1.59, 95% CI 1.23 to 2.06;§ χ 2=4.77, df=1, p=0.029, relative risk 1.62, 95% CI 1.06 to 2.48; ∥ χ 2=5.26, df=1, p=0.021, relative risk 1.78, 95% CI 1.1 to 2.89.