Table A1.
Characteristics of preterm infants by quartile of growth trajectory.
| Characteristic | Zdiff ≤ −1.34 1 (Number = 51) |
−1.34 < Zdiff ≤ −0.93 1 (Number = 51) |
−0.93 < Zdiff ≤ −0.57 1 (Number = 51) |
Zdiff > −0.57 1 (Number = 51) |
Total (Number = 204) |
p-Value 6 |
|---|---|---|---|---|---|---|
| Sex (female/male) | 25/26 | 22/29 | 28/23 | 21/30 | 96/108 | 0.5 |
| Race (number) | 0.53 | |||||
| Black or African American | 10 | 12 | 16 | 12 | 50 | |
| White or Caucasian | 24 | 25 | 27 | 24 | 100 | |
| Other | 17 | 14 | 8 | 15 | 54 | |
| Comorbidities (yes/no) | ||||||
| Grade III IVH 2 | 1/50 | 1/50 | 0/51 | 0/51 | 2/202 | 1.00 |
| Grade IV IVH | 1/50 | 0/51 | 0/51 | 1/50 | 2/202 | 1.00 |
| NEC 3 | 0/51 | 1/50 | 0/51 | 0/51 | 1/203 | 1.00 |
| PDA 4 | 5/46 | 4/47 | 6/45 | 3/48 | 18/186 | 0.84 |
| SGA 5 | 1/50 | 2/49 | 6/45 | 3/48 | 12/192 | 0.24 |
1 Change in weight z-score: Zdiff = Zdischarge − Zbirth, 2 IVH = intraventricular hemorrhage, 3 necrotizing enterocolitis, 4 patent ductus arteriosus, 5 small for gestational age, and 6 p-value calculated by chi-square and Fisher’s exact tests. Comorbidity information was not available on all subjects.