Table 2 Association between environmental factors and asthma, rhinoconjunctivitis and eczema symptoms during the past 12 months (unadjusted and adjusted odds ratios with 95% confidence intervals) (N = 2340)

Current dog contact

Yes⁶

1.36 (0.97–1.92)

1.31 (0.90–1.90)

1.38 (0.79–2.38)

1.23 (0.65–2.31)

1.60 (1.16–2.20)

1.37 (0.97–1.94)

1.08 (0.71–1.65)

0.85 (0.54–1.35)

Current cat contact

Yes⁶

1.18 (0.94–1.48)

1.09 (0.86–1.39)

1.48 (1.02–2.15)

1.43 (0.96–2.13)

1.35 (1.09–1.66)

1.22 (0.97–1.52)

1.46 (1.07–1.97)

1.37 (0.99–1.90)

Current contact to farm animals

Yes⁶

1.29 (1.03–1.62)

1.19 (0.94–1.51)

1.13 (0.79–1.63)

0.97 (0.66–1.44)

1.71 (1.39–2.10)

1.48 (1.19–1.84)

1.46 (1.09–1.96)

1.31 (0.96–1.79)

Intense truck traffic7

Yes⁶

1.24 (0.98–1.57)

1.22 (0.95–1.56)

1.53 (1.06–2.20)

1.53 (1.04–2.25)

1.33 (1.07–1.65)

1.27 (1.01–1.59)

1.44 (1.07–1.95)

1.44 (1.05–1.97)

Environmental tobacco smoke exposure

Yes⁶

1.30 (1.04–1.63)

1.23 (0.97–1.56)

1.07 (0.75–1.55)

1.12 (0.76–1.66)

1.31 (1.06–1.61)

1.21 (0.97–1.51)

1.34 (1.00–1.80)

1.30 (0.95–1.77)

Cooking fuel

Gas or electricity

1

1

1

1

1

1

1

1

Wood or coal

1.01 (0.75–1.37)

0.86 (0.62–1.19)

1.80 (1.12–2.89)

1.94 (1.16–3.26)

0.99 (0.75–1.30)

0.81 (0.60–1.11)

0.95 (0.64–1.40)

0.84 (0.54–1.30)

Presence of disease vectors at home ⁸

Quartile 1

1

1

1

1

1

1

1

1

Quartile 2

1.19 (0.90–1.57)

1.14 (0.86–1.53)

1.02 (0.65–1.60)

1.15 (0.72–1.84)

0.94 (0.72–1.22)

0.88 (0.67–1.16)

0.91 (0.62–1.35)

0.88 (0.59–1.32)

Quartile 3

1.27 (0.93–1.73)

1.17 (0.85–1.61)

1.09 (0.67–1.79)

1.10 (0.65–1.88)

1.31 (0.99–1.73)

1.25 (0.94–1.68)

1.54 (1.05–2.26)

1.54 (1.03–2.30)

Quartile 4

1.68 (1.20–2.36)

1.49 (1.04–2.14)

1.81 (1.08–3.03)

2.19 (1.25–3.82)

1.84 (1.35–2.50)

1.64 (1.18–2.30)

1.87 (1.23–2.82)

1.82 (1.15–2.87)

Precarious household conditions ⁹

None

1

1

1

1

1

1

1

1

1

1.19 (0.91–1.57)

1.22 (0.92–1.62)

1.09 (0.70–1.70)

0.93 (0.57–1.51)

1.03 (0.79–1.33)

1.00 (0.76–1.31)

0.96 (0.67–1.40)

0.92 (0.62–1.36)

≥ 2

1.31 (0.89–1.92)

1.30 (0.86–1.96)

1.03 (0.53–2.01)

0.94 (0.47–1.89)

1.57 (1.10–2.24)

1.51 (1.03–2.22)

1.24 (0.75–2.04)

1.12 (0.64–1.94)

Number of item ownership ¹⁰

Quartile 1

1

–

1

–

1

–

1

–

Quartile 2

0.96 (0.71–1.30)

–

1.12 (0.68–1.84)

–

0.84 (0.63–1.11)

–

1.31 (0.88–1.95)

–

Quartile 3

0.94 (0.69–1.29)

–

1.23 (0.75–2.02)

–

0.86 (0.65–1.14)

–

1.20 (0.79–1.80)

–

Quartile 4

1.03 (0.76–1.39)

–

1.06 (0.64–1.75)

–

0.94 (0.71–1.24)

–

1.18 (0.78–1.76)

–