Table 2. Characteristics of the study population: original dataset versus imputed dataset.
| Complete cases (n = 412) | Imputed dataset (n = 1,865) a | Complete cases (n = 412) | Imputed dataset (n = 1,865) a | ||
|---|---|---|---|---|---|
| % | % | % | % | ||
| Gender | Poor general health | ||||
| Male | 54.9 | 50.8 | age 4 | 20.9 | 24.1 |
| Female | 45.2 | 49.2 | age 6 | 21.1 | 20.3 |
| age 8 | 23.1 | 23.2 | |||
| Maternal education | age 11 | 24.0 | 21.6 | ||
| Low | 13.6 | 17.8 | |||
| Intermediate | 42.5 | 41.9 | Freq. respiratory infections | ||
| High | 43.9 | 40.3 | age 1 | 10.2 | 12.5 |
| age 2 | 13.6 | 13.2 | |||
| Paternal education | age 3 | 7.8 | 10.6 | ||
| Low | 21.1 | 20.9 | age 4 | 8.5 | 9.4 |
| Intermediate | 30.1 | 33.4 | age 5 | 8.7 | 9.7 |
| High | 48.8 | 45.8 | age 6 | 6.1 | 7.4 |
| age 7 | 4,1 | 4.3 | |||
| Eczema | age 8 | 2.7 | 4.0 | ||
| age 1 | 13.8 | 14.0 | age 11 | 3.2 | 3.2 |
| age 2 | 18.5 | 17.3 | |||
| age 3 | 17.2 | 17.3 | Overweight | ||
| age 4 | 17.5 | 17.9 | age 3 | 6.8 | 8.2 |
| age 5 | 17.7 | 16.0 | age 4 | 7.3 | 9.7 |
| age 6 | 15.1 | 15.6 | age 5 | 9.2 | 10.4 |
| age 7 | 15.5 | 14.8 | age 6 | 9.7 | 9.9 |
| age 8 | 15.1 | 16.3 | age 7 | 9.2 | 11.7 |
| age 11 | 13.6 | 13.6 | age 8 | 10.9 | 12.0 |
| age 11 | 10.2 | 11.0 | |||
| Asthma symptoms | |||||
| age 3 | 19.2 | 21.9 | School absence | ||
| age 4 | 15.8 | 17.6 | No absence | 30.8 | 30.2 |
| age 5 | 15.3 | 15.7 | 1–2 days | 32.3 | 30.1 |
| age 6 | 14.6 | 13.1 | 3–5 days | 24.5 | 25.2 |
| age 7 | 11.9 | 11.4 | > 5 days | 12.4 | 14.5 |
| age 8 | 11.9 | 12.1 | |||
| age 11 | 9.7 | 11.4 | |||
| Mean (SD) | Mean (SD | Range | Range | ||
| Z-score School level assessment | 0.0 (1.0) | 0.0 (1.0) | -2.6–1.0 | -2.1–1.1 | |
| Z-score Cito Test score | 0.0 (1.0) | 0.0 (1.0) | -3.8–1.3 | -3.9–1.4 | |
a Data were not imputed for Cito Test Scores (n = 1,531).