Table 1

 Demographic data of the three groups of study subjects

No LRTI(n = 32)RSV− LRTI(n = 50)RSV+ LRTI(n = 44)p values
No LRTI vs RSV−No LRTI vs RSV+RVS− vs RSV+
Data are shown as n (%) or median (range).
Antenatal infection (n)16 (50%)13 (26%)9 (20%)0.060.021.00
Maternal smoking in pregnancy (n)1 (3%)6 (12%)11 (25%)0.34<0.010.18
Antenatal steroids (n)25 (78%)43 (86%)40 (91%)0.970.361.00
Boys (n)17 (53%)27 (54%)31 (70%)1.000.390.32
Gestational age (weeks)29.5 (23–31)28 (24–31)29 (23–31)1.001.001.00
Birth weight (g)1175 (500–1850)1040 (650–2280)1010 (570–1960)1.001.001.00
Surfactant (n)26 (81%)37 (74%)31 (70%)1.001.001.00
Postnatal infection (n)19 (59%)23 (46%)25 (57%)0.721.000.89
Ventilator days (n)6 (0–63)3.5 (0–79)4.5 (0–116)0.971.000.47
Bronchopulmonary dysplasia (n)13 (41%)21 (43%)17 (39%)1.001.001.00
Duration of oxygen therapy (weeks)33.5 (32–60)35 (31–92)32.5 (30–107)1.001.001.00
Discharge August–November (n)12 (38%)20 (40%)23 (52%)1.000.610.70
Family history of atopy (n)13 (41%)22 (44%)25 (57%)1.000.500.65
No of school aged siblings (n)0.5 (0–3)0.5 (0–4)1 (0–4)1.000.510.23
Day care attendance (n)4 (13%)6 (12%)9 (20%)1.001.000.77
Parental smoking in the home (n)5 (16%)10 (20%)13 (30%)1.000.460.81
Breast feeding (n)21 (66%)33 (66%)29 (66%)1.001.001.00