Table 2.
Basic characteristics of the assessed group at five years of age (n= 149)
| Total group (n = 149) | |
| mean (SD) | |
| Age in months | 62 (2.5) |
| Height score * | -0.4 (1.1) |
| Weight for height score ** | -0.3 (1.4) |
| BMI score *** | -0.3 (1.4) |
| Motor performance percentile score (n = 140) | 35.6 (28.4) |
| Intelligence score (n = 131) | 99.7 (18.1) |
| Behavioural score (n = 125) | 50.2 (9.9) |
| Socio-economic status | number (%) |
| - low | 28 (16) |
| - middle | 76 (44) |
| - high | 35 (20) |
| - unknown | 35 (20) |
| Vision | number |
| - normal | 121 |
| - abnormal/no glasses1 | 2 |
| - adequate correction with glasses | 6 |
| - abnormal with glasses | 0 |
| - unknown | 20 |
| Sense of hearing | number |
| - normal | 123 |
| - abnormal/no hearing aid1 | 4 |
| - adequate correction with hearing aid | 3 |
| - abnormal with hearing aid | 1 |
| - unknown | 18 |
*One sample t-test: P < 0.001; ** P < 0.05; *** P < 0.02
1in one child with severe cerebral palsy correction was not possible
BMI = body mass index; SD = standard deviation.