Table 1 Medical and demographic characteristics of the PLBW (n = 1288) and the control (n = 37010) groups
| Â | PLBW | Control Group | ||
|---|---|---|---|---|
| Â | M | SD | M | SD |
Birth weight (g) | 2002.4 | 424.6 | 3705.4 | 474.2 |
Gestation (wks) | 33.7 | 2.6 | 39.9 | 1.2 |
Apgar 1 min. | 8.0 | 1.7 | 8.7 | 1.1 |
Apgar 5 min. | 9.0 | 1.1 | 9.4 | 0.7 |
Maternal age | 29.6 | 4.7 | 30.0 | 4.4 |
Gender (% male/female) | 46/54 | 51/49 | ||
Maternal education (% university graduates) | 62 | 66 | ||