Table 1

 Comparison of residents in houses improved as an early intervention compared with those in houses deferred for improvement at start of study

InterventionControl
(a) Houses
House type n = 50 (%)n = 69 (%)
Semi-detached28 (56)33 (48)
Terrace14 (28)22 (32)
End terrace8 (16)14 (20)
Occupancy n = 48 (%)n = 63 (%)
Not overcrowded (<1 person/room)33 (69)49 (78)
Overcrowded (1–1.5 person/room)14 (29)13 (21)
Severe overcrowding (1.5+ person/room)1 (2)1(2)
Heating n = 48 (%)n = 63 (%)
Central heating downstairs30 (63)39 (62)
Central heating upstairs5 (10)5 (8)
Open fire downstairs8 (17)5 (8)
Gas fire downstairs35 (73)48 (76)
Temperature n = 48 (%)n = 65 (%)
Living room below 21°C43 (90)58 (89)
Bedroom below 18°C38 (79)49 (75)
Indoor air pollutant exposure n = 49 (%)n = 63 (%)
With pet34 (71)43 (68)
With smoker37 (77)42 (67)
Gas cooking33 (67)40 (64)
(b) Residents
Sex n = 209 (%)n = 272 (%)
Male104 (50)133 (49)
Female105 (50)139 (51)
Age (years) n = 207 (%)n = 269 (%)
0–430 (15)26 (10)
5–1794 (45)109 (42)
18–4465 (31)80 (31)
45–6413 (6)35 (13)
65+5 (2)12 (5)
Employment n = 82 (%)n = 120 (%)
Unemployed41 (50)52 (43)
Smoking n = 109 (%)n = 136 (%)
Yes47 (43)55 (40)
Suffer from asthma n = 207 (%)n = 263 (%)
Yes58 (28)66 (25)