Information on parents of the preterm infants and controls
| Variable | Very preterm children (<32 weeks) (n=19) | Moderately preterm children (32–35 weeks) (n=20) | All preterm children (⩽35 weeks) (n=39) | Full term children (>36 weeks) (n=39) |
|---|---|---|---|---|
| Age of mother is expressed as mean (SD). No significant differences were found between the two preterm groups and between all preterm children and the full term children with regard to any variable. | ||||
| Age of mother (years) | 27.9 (5.1) | 27.1 (4.4) | 27.4 (4.8) | 28.5 (4.0) |
| Primiparae (%) | 57.9 | 60.0 | 59.0 | 51.3 |
| Education of mother | ||||
| Primary school (%) | 21.1 | 10 | 15.4 | 10.3 |
| Grammar school (%) | 36.8 | 70 | 53.8 | 48.7 |
| Higher education (%) | 42.1 | 20 | 30.8 | 41.0 |
| Education of father | ||||
| Primary school (%) | 10.5 | 0 | 5.1 | 5.1 |
| Grammar school (%) | 68.4 | 70 | 69.2 | 66.7 |
| Higher education (%) | 21.1 | 30 | 25.6 | 28.2 |