Table 4 Adjusted odds ratios* for the associations between early life factors and adult habitual snoring, and habitual snoring with daytime sleepiness combined (n = 13,484).

Hospitalized for respiratory infection before 2 years of age

1.27 (1.04–1.54)

1.27 (1.01–1.59)

1.46 (1.16–1.83)

1.40 (1.07–1.81)

Otitis in childhood

1.15 (1.04–1.27)

1.18 (1.05–1.33)

1.37 (1.22–1.56)

1.34 (1.18–1.54)

Dog at home when newborn

1.34 (1.21–1.48)

1.26 (1.12–1.42)

1.38 (1.22–1.56)

1.35 (1.17–1.54)

Cat at home when newborn

1.30 (1.17–1.44)

0.99 (0.86–1.14)

1.29 (1.13–1.47)

1.01 (0.85–1.20)

Other pet at home when newborn

1.43 (1.19–1.71)

1.13 (0.90–1.42)

1.51 (1.21–1.87)

1.20 (0.92–1.56)

Household size (one more person)

1.07 (1.04–1.10)

1.04 (1.002–1.07)

1.05 (1.02–1.09)

1.03 (0.99–1.07)

Mother's age at delivery (per 5 years' increase)

0.98 (0.95–1.01)

0.96 (0.93–0.999)

0.96 (0.92–0.997)

0.95 (0.90–0.99)

Asthma

1.52 (1.31–1.77)

1.14 (0.94–1.37)

1.85 (1.56–2.19)

1.28 (1.03–1.57)

Allergic rhinitis

1.09 (0.99–1.20)

1.22 (1.08–1.36)

1.31 (1.16–1.47)

1.38 (1.20–1.58)

Chronic bronchitis

2.72 (2.34–3.15)

2.33 (1.95–2.80)

3.34 (2.84–3.93)

2.76 (2.27–3.35)

Smoking (per 5 pack years increase)

1.20 (1.17–1.22)

1.15 (1.12–1.18)

1.18 (1.15–1.21)

1.13 (1.10–1.17)

Body mass index (per 5 kg/m² increase)

2.04 (1.94–2.15)

1.82 (1.72–1.93)

1.80 (1.70–1.90)

1.69 (1.58–1.80)