Table 6

Risk of reported health symptoms for 4 levels of carbon monoxide exposure likelihood

CO exposure
Unadjusted
odds ratios
(95%CI: Low, High)
Odds ratios
version 1*
(95%CI: Low, High)
Odds ratios
version 2*
(95%CI: Low, High)
Odds ratios
version 3*
(95%CI: Low, High)
Odds ratios
version 4*
(95%CI: Low, High)

Little or no risk
1.00
1.00
1.00
1.00
1.00
D_Low
1.50 (0.72, 3.13)
1.46 (0.70, 3.05)
1.46 (0.70, 3.04)
0.54 (0.15, 1.95)
3.08 (1.20, 7.91)
C_Medium
2.79 (1.13, 6.85)
2.82 (1.14, 7.02)
2.81 (1.14, 6.96)
2.22 (0.66, 7.50)
3.22 (0.84, 12.4)
B_High or A_Very High
3.38 (1.36, 8.43)
3.25 (1.29, 8.22)
3.23 (1.28, 8.15)
0.98 (0.21, 4.63)
9.28 (2.78, 30.98)

*Version 1: adjusted for benefit, number of residents, and presence of pensioners

*Version 2: using "benefit recipient" as clustering variable, and adjusted for "number of residents" and presence of pensioners

*Version 3: in the subgroup who are "in receipt of benefit"

*Version 4: in the subgroup who are "not in receipt of benefit"

Croxford et al. Environmental Health 2008 7:34   doi:10.1186/1476-069X-7-34