Table 1.
Perinatal Characteristics
| Severe ROP | Any Stage ROP | |||||
|---|---|---|---|---|---|---|
| Severe ROP Group (n=42) | Control Group (n=569) | P value | ROP Group (n=245) | No ROP Group (n=366) | P value | |
| Neonatal | ||||||
| GA [M(Q1, Q3), w] | 27.1 (25.7, 28.4) | 29.3 (28.1, 30.6) | <0.001* | 28.3 (27.0, 29.6) | 29.7 (28.7, 31.3) | <0.001* |
| BW [M(Q1, Q3), g] | 940 (807.5, 1052.5) | 1210 (1055, 1350) | <0.001* | 1100 (930, 1250) | 1260 (1117.5, 1380) | <0.001* |
| Male gender (n, %) | 32(76.2) | 304(53.4) | 0.004# | 145(59.2) | 191(52.2) | 0.088# |
| 5 min Apgar score [M(Q1, Q3)] | 9(7, 10) | 10(9, 10) | <0.001* | 9(9, 10) | 10(9, 10) | <0.001* |
| Mother | ||||||
| Types of pregnancy | ||||||
| Single (n, %) | 27(64.3) | 416(73.1) | 0.216# | 165(67.3) | 278(76.0) | 0.019# |
| Twin (n, %) | 15(35.7) | 153(26.0) | 80(32.7) | 88(24.0) | ||
| C-section (n, %) | 14(34.1) | 340(59.9) | 0.001# | 106(43.6) | 248(67.8) | <0.001# |
| Prenatal magnesium sulfate (n, %) | 31(75.6) | 361(63.7) | 0.123# | 171(70.4) | 221(60.5) | 0.013# |
Notes: *Mann–Whitney U-test; #Chi-squared test.
Abbreviations: GA, gestational age; BW, birth weight; ROP, retinopathy of prematurity.