Table 3

Housing quality indices: numbers of subjects (cases and controls) in the study; crude (unadjusted) ORs relative to a reference value; aORs controlling for season, housing tenure, socioeconomic status and household crowding

Factor levelCases
n (%)
Controls
n (%)
Crude OR
(95% CI)
aOR (95% CI)
N=188N=454
RHI*
 09 (5)20 (4)Reference valueReference value
 123 (12)73 (16)0.70 (0.28 to 1.75)0.75 (0.28 to 2.00)
 243 (23)110 (24)0.87 (0.37 to 2.06)0.76 (0.30 to 1.91)
 337 (20)91 (24)0.90 (0.38 to 2.17)0.76 (0.23 to 1.93)
 422 (12)62 (14)0.79 (0.31 to 1.99)0.65 (0.24 to 1.77)
 524 (12)52 (11)1.03 (0.41 to 2.58)0.76 (0.28 to 2.05)
 612 (6)28 (6)0.95 (0.34 to 2.69)0.72 (0.23 to 2.25)
 79 (5)13 (3)1.54 (0.48 to 4.90)0.95 (0.27 to 3.27)
 8+ 9 (5) 5 (1) 4.00 (1.04 to 15.38) 3.06 (0.72 to 13.06)
RHI as continuous outcome (per unit increase) 1.11 (1.01 to 1.21) 1.04 (0.94 to 1.15)
DMI*
 032 (17)114 (25)Reference valueReference value
 149 (26)147 (32)1.19 (0.71 to 1.97)1.13 (0.66 to 1.19)
 241 (22)75 (17) 1.95 (1.13 to 3.36) 1.70 (0.95 to 3.05)
 327 (14)61 (13)1.58 (0.87 to 2.87)1.16 (0.61 to 2.22)
 420 (11)40 (9)1.78 (0.92 to 3.46)1.44 (0.71 to 2.92)
 513 (7)13 (3) 3.56 (1.50 to 8.44) 2.82 (1.11 to 7.16)
 6+4 (1)6 (3) 5.34 (1.42 to 20.09) 3.19 (0.78 to 13.11)
DMI as continuous outcome (per unit increase) 1.23 (1.10 to 1.38) 1.15 (1.02 to 1.30)
  • Bold figures indicate that the results are statistically significant at the level of 5%

  • *See Table 2 for components of the RHI and the DMI.

  • aOR, adjusted OR; DMI, Damp–Mould Index; RHI, Respiratory Hazard Index.