Table 4.

 Household results in a trial of insulating houses. Values are number/total number of households for self reported house condition and median/geometric mean (number of households) for energy use, unless stated otherwise

Outcome measure	Before intervention			After intervention			Odds ratio (95% CI)
	Intervention group	Control group		Intervention group	Control group		Unadjusted	Adjusted
Self reported condition of house*
Any mould	364/509	362/501		191/509	343/501		0.28 (0.21 to 0.36) P<0.0001	0.24 (0.18 to 0.32) P<0.0001
House cold most of the time or always	398/550	383/547		95/550	378/547		0.09 (0.07 to 0.12) P<0.0001	0.06 (0.04 to 0.09) P<0.0001
Condensation	487/538	486/535		318/538	480/535		0.17 (0.12 to 0.23) P<0.0001	0.16 (0.11 to 0.22) P<0.0001
Non-condensation dampness	334/519	324/516		156/519	339/516		0.23 (0.18 to 0.30) P<0.001	0.18 (0.13 to 0.24) P<0.0001
Heating ineffective†	61/304	104/375		48/304	125/375		0.38 (0.26 to 0.55) P<0.0001	0.38 (0.25 to 0.57) P<0.0001
Energy use (kWhre)
Measured and self reported‡	4722/5016 (195)	4583/5120 (193)		3678/3899 (195)	4866/4941 (193)		0.79 (0.64 to 0.97) P=0.02	0.81 (0.72 to 0.91) P=0.0006
Measured only§	2416/2451 (72)	2392/2317 (64)		2298/2200 (72)	2592/2328 (64)		0.95 (0.77 to 1.16) P=0.06	0.92 (0.83 to 1.02) P=0.097
Measured and self reported¶	—	—		3828/3847 (267)	4628/4262 (295)		0.90 (0.77 to 1.05) P=0.20	0.91 (0.79 to 1.04) P=0.17

*Question answered for both years and adjusted for baseline status, region, and amount of sunshine.

†Excludes those who reported using no heating in either year.

‡Estimated full fuel data for both years, including self reported wood, coal, and liquefied petroleum gas; adjusted for region and fuel use in year 1.

§Full fuel data for both years; households use only electricity and mains gas; adjusted for region and fuel use in year 1.

¶Households with full fuel data for year 2 only; adjusted for region only.