Table II.
Baseline characteristics of patients
| TIV+PCV7 (n = 197) | TIV+plac (n = 187) | HBV+plac (n = 195) | |
|---|---|---|---|
| Male sex, % | 58.9 | 55.6 | 50.3 |
| Mean age, years | 3.0 | 3.1 | 3.1 |
| Number of RTI episodes in preceding year, % | |||
| ≤3 | 46 | 44 | 42 |
| 4 to 6 | 37 | 40 | 41 |
| ≥7 | 17 | 16 | 17 |
| GP-diagnosed RTI in preceding year, n | 3.0 | 3.1 | 3.2 |
| Courses of antibiotics prescribed in preceding year, n | 1.6 | 1.6 | 1.8 |
| History of ENTsurgery, % | 28.6 | 27.6 | 29.5 |
| Asthma/wheezing in preceding year, % | 28.3 | 27.4 | 31.6 |
| Hay fever/allergic rhinitis in preceding year, % | 16.6 | 14.1 | 12.4 |
| Eczema in preceding year, % | 21.6 | 18.3 | 22.9 |
| Day care, % | 69.7 | 62.0 | 66.3 |
| Mean number of siblings, n | 0.8 | 0.9 | 1.0 |
| Breast-feeding < 3 months, % | 58.2 | 62.7 | 55.5 |
| Tobacco smoke exposure indoors, % | 22.6 | 25.9 | 26.6 |