Table 1.
Demographic and Medical Characteristics of Study Sample
| Characteristic | All (N=1,183) | Neurological Classification |
||
|---|---|---|---|---|
| Normal (N=780) | Abnormal: Non-CP (N=259) | Abnormal: CP (N=143) | ||
| n(%)* | n(%)* | n(%)* | n(%)* | |
| Male | 583 (49) | 374 (48) | 126 (49) | 82 (57) |
| Race/Ethnicity | ||||
| Black | 470 (40) | 317 (41) | 95 (37) | 58 (41) |
| White | 626 (54) | 412 (53) | 141 (55) | 72 (51) |
| Other | 74 (6) | 45 (6) | 19 (7) | 10 (7) |
| Gestational age...mean (SD) | 25 (1) | 25 (1) | 25 (1) | 25 (1) |
| Birth weight...mean (SD) | 775 (169) | 794 (164) | 734 (176) | 747 (170) |
| SGA | 74 (6) | 35 (4) | 30 (12) | 9 (6) |
| Congenital anomaly | 25 (2) | 15 (2) | 6 (2) | 4 (3) |
| Postnatal steroids | 191 (16) | 106 (14) | 47 (18) | 37 (26) |
| Surfactant | 1053 (89) | 684 (88) | 235 (91) | 133 (93) |
| BPD (traditional definition) | 633 (54) | 385 (50) | 159 (62) | 88 (62) |
| Sepsis | 402 (34) | 234 (30) | 104 (40) | 64 (45) |
| IVH 3-4/PVL | 207 (18) | 84 (11) | 48 (19) | 75 (52) |
| Multiple birth | 263 (22) | 181 (23) | 49 (19) | 33 (23) |
| Proven NEC | 125 (11) | 76 (10) | 29 (11) | 20 (14) |
| ROP | 850 (72) | 524 (68) | 208 (81) | 117 (82) |
| Apgar...mean (SD) | ||||
| 1-minute | 4 (2) | 4 (2) | 4 (2) | 3 (2) |
| 5-minute | 6 (2) | 6 (2) | 6 (2) | 6 (2) |
| Hospital stay...mean (SD) | 116 (47) | 105 (35) | 130 (57) | 145 (59) |
*
Results presented as n (% of column N) unless otherwise specified as mean (SD).
Acronyms: SGA= Small for Gestational Age, BPD= Bronchopulmonary Dysplasia, IVH= Intraventricular Hemorrhage; PVL= Periventricular Leukomalacia, NEC= Necrotizing Enterocolitis, ROP= Retinopathy of Prematurity