Characteristics of subjects who did or did not return a questionnaire
| No questionnaire (151) | Questionnaire (150) | p | |
|---|---|---|---|
| TOMI–12, score on test of motor impairment at age 12 years. | |||
| IQ–12, score on WISC-3 intelligence test at 12 years. | |||
| Height–12, mean height in cm (SD) at 12 years. | |||
| OFC–12, mean occipitofrontal head circumference in cm (SD) at 12 years. | |||
| TOMI–12 | 2 (1–4.375) | 2 (1–4) | 0.950 |
| IQ–12 | 92 (18) | 96 (17) | 0.062 |
| Height–12 | 148 (8.7) | 147 (8.2) | 0.349 |
| OFC–12 | 54.0 (1.7) | 53.8 (1.7) | 0.493 |
| Male | 87 (57.6%) | 65 (43.3%) | 0.018 |
| Preterm | 60 (39.7%) | 79 (52.7%) | 0.014 |