Table 4

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.