Demographic data and family history of the respiratory syncytial virus (RSV) and control groups at age 18
| Variable | RSV (n=46) | Controls (n=92) |
| Weight (kg) | 65 (12) | 70 (13) |
| Height (cm) | 174 (10) | 174 (10) |
| Parental atopy | 30/46 (65%) | 52/92 (56%) |
| Parental asthma | 18/46 (39%) | 25/92 (27%) |
| Tobacco smoke exposure | ||
| Active | 10/45 (22%) | 14/92 (15%) |
| Passive (family member) | 19/45 (42%) | 40/92 (43%) |
| Indoor furred pets | 24/46 (52%) | 56/92 (61%) |
Mean (SD) or proportions (percentages) of subjects are given. No significant differences were seen between the groups.