Anthropometrics | Prenatal exposures | ||
Males | 50.5 | Prenatal exposure to cat or dog | 38.7 |
Age years | 4.3±0.2 | Maternal smoking | 8.6 |
Current height cm | 106.2±4.2 | Postnatal exposures | |
Current weight kg | 17.6±2.2 | Postnatal cat or dog | |
Current BMI kg·m−2 | 15.6±1.3 | Never | 30.5 |
Lung function parameters | First in first year | 50.8 | |
Rrs6 | First after first year | 18.8 | |
Baseline hPa·s·L−1 | 10.3±2.5 | Postnatal ETS | |
Absolute change hPa·s·L−1 | −2.5±1.8 | Never | 81.0 |
Relative change % baseline | −22.6±13.0 | First in first year | 10.8 |
AX | First after first year | 8.2 | |
Baseline hPa·L−1 | 23.9±19.7 | LRTI | |
Absolute change hPa·L−1 | −13.9±16.5 | Never | 47.0 |
Relative change % baseline | −48.5±25.8 | First in first year | 3.6 |
Birth characteristics | First after first year | 49.4 | |
Gestational age weeks | 39.2±1.6 | Number of LRTIs | |
Birth weight kg | 3.4±0.5 | 0 | 55.2 |
Family history | 1 | 23.8 | |
Parental atopy | >1 | 21.0 | |
No | 31.6 | Wheeze | |
Only mother | 21.5 | Timing of wheeze | |
Only father | 27.9 | Never | 43.4 |
Both parents | 18.9 | Early/transient | 38.3 |
Parental allergies | Late onset | 2.1 | |
No | 42.5 | Persistent | 16.3 |
Only mother | 29.9 | Number of wheeze episodes | |
Only father | 19.0 | 0 | 45.7 |
Both parents | 8.6 | 1 | 18.1 |
Parental asthma | >1 | 36.2 | |
No | 86.8 | Atopic sensitisation | |
Mother | 7.5 | Inhalant atopy | |
Father | 5.4 | Never | 79.2 |
Both parents | 0.4 | First at 1 year | 5.2 |
First at 4 years | 15.6 | ||
Food atopy | |||
Never | 80.0 | ||
First at 1 year | 14.0 | ||
First at 4 years | 6.0 | ||
Number of inhalant allergens | |||
0 | 79.4 | ||
1 | 12.3 | ||
>1 | 8.3 | ||
Number of food allergens | |||
0 | 79.8 | ||
1 | 14.4 | ||
>1 | 5.7 |
Data are presented as % or mean±sd. n=535. BMI: body mass index; Rrs6: respiratory resistance at 6 Hz; AX: area under the reactance curve; ETS: environmental tobacco smoke; LRTI: lower respiratory tract infection.