Table 2 Univariate and multivariate conditional logistic regression analyses of potential risk factors for consulting the general practitioner with an acute respiratory tract infections.

Exposure to respiratory complaints within household

   No

1

1

   Yes

2.32 [1.58–3.39]

1.91 [0.96–3.78]

Exposure to respiratory complaints outside household

   No

1

1

   Maybe

3.40 [2.17–5.37]

3.85 [1.66–8.93]

   Yes

3.50 [2.31–5.29]

3.65 [1.70–7.84]

Number of children in household

   0

1

1

   ≥1

1.37 [0.95–1.98]

1.42 [0.51–3.95]

Children in primary school

   No

1

1

   Yes

1.52 [0.93–2.47]

1.12 [0.43–2.91]

Children in secondary education

   No

1

1

   Yes

0.67 [0.41–1.10]

0.32 [0.13–0.77]

Dampness or mould at home

   No

1

1

   Yes

0.63 [0.42–0.95]

0.48 [0.23–1.00]

Mechanical ventilation system

   No

1

1

   Yes

1.36 [1.00–1.86]

1.31 [0.75–2.27]

Smoking by participant

   No

1

1

   In past

1.14 [0.75–1.74]

1.25 [0.56–2.80]

   Yes

1.00 [0.67–1.49]

0.91 [0.40–2.07]

Exposure to passive smoking

   No

1

1

   Yes

0.89 [0.65–1.22]

0.56 [0.27–1.13]