Table 3

 Crude and adjusted odds ratios of sick building syndrome-related symptoms, chronic respiratory symptoms and respiratory infections during the past 12 months in relation to exposure to fumes from photocopiers and printers

CrudeAdjusted*Adjusted†
OR (95% CI)OR (95% CI)OR (95% CI)
*Adjusted for age and sex.
†Adjusted for the set of covariates that changed the estimate of interest by >10% (for details, see Data analysis of the Methods section).
‡Adjusted OR did not change because no other covariate changed the estimate by >10% when added to the model including sex and age.
Nasal symptoms1.99 (0.57 to 7.02)1.72 (0.48 to 6.20)1.38 (0.37 to 5.09)
Eye symptoms0.38 (0.04 to 3.33)0.37 (0.04 to 3.33)0.26 (0.02 to 3.07)
Throat symptoms10.1 (1.17 to 87.8)10.0 (1.13 to 89.1)14.4 (1.42 to 146.9)
Skin symptoms1.58 (0.42 to 6.00)1.44 (0.37 to 5.60)2.21 (0.51 to 9.55)
Headache1.99 (0.57 to 7.02)1.99 (0.55 to 7.18)1.49 (0.36 to 6.20)
Fatigue2.45 (1.09 to 5.48)2.69 (1.18 to 6.14)2.13 (0.90 to 5.03)
Cough1.12 (0.46 to 2.76)1.08 (0.43 to 2.71)1.08‡ (0.43 to 2.71)
Phlegm production0.88 (0.42 to 1.87)0.94 (0.44 to 2.02)0.94‡ (0.44 to 2.02)
Chronic bronchitis1.17 (0.28 to 5.00)1.12 (0.26 to 4.87)1.72 (0.37 to 8.10)
Wheezing0.90 (0.48 to 1.72)0.90 (0.47 to 1.73)0.90‡ (0.47 to 1.73)
Breathlessness1.60 (0.85 to 3.01)1.57 (0.82 to 3.00)1.57‡ (0.82 to 3.00)
Common colds1.31 (0.82 to 2.10)1.19 (0.73 to 1.93)1.19‡ (0.73 to 1.93)
Tonsillitis2.41 (0.72 to 8.07)2.41 (0.69 to 8.40)2.41‡ (0.69 to 8.40)
Sinus infections1.29 (0.71 to 2.36)1.07 (0.57 to 2.01)1.07‡ (0.57 to 2.01)
Middle ear infections1.71 (0.56 to 5.20)1.58 (0.51 to 4.87)1.54 (0.48 to 4.99)
Bronchitis0.88 (0.40 to 1.92)0.90 (0.40 to 1.98)0.86 (0.39 to 1.91)
Diarrhoea1.22 (0.75 to 1.99)1.09 (0.66 to 1.80)1.09‡ (0.66 to 1.80)