Table 1 Characteristics of the SGA newborns in this study
| Â | All SGA newborns (n = 723) | SGA newborns with genetic diagnosis (n = 88) | SGA newborns without genetic diagnosis (n = 635) | P value |
|---|---|---|---|---|
Birth information | ||||
 Male (%) | 439 (60.7) | 52 (59.1) | 387 (60.9) | 0.74 |
 Gestational age, mean (SD), week | 36.5(3.3) | 38.7(1.8) | 36.2(3.3) | < 0.00001 |
 Birth weight, mean (SD), g | 2002.1(626.8) | 2362.5(424.8) | 1952.2(634.1) | < 0.00001 |
 Severe SGA (%) | 314 (43.4) | 48 (54.5) | 266 (41.9) | 0.025 |
Organ system abnormalities during hospitalization | ||||
 Cardiovascular (%) | 515 (71.2) | 59 (67.0) | 456 (71.8) | 0.36 |
 Allergy/immunologic/infectious (%) | 346 (47.9) | 39 (44.3) | 307 (48.3) | 0.48 |
 Hematologic (%) | 271 (37.5) | 25 (28.4) | 246 (38.7) | 0.061 |
 Metabolic/biochemical (%) | 264 (36.5) | 27 (30.7) | 237 (37.3) | 0.23 |
 Neurologic (%) | 228 (31.5) | 41 (46.6) | 187 (29.4) | 0.0012 |
 Gastrointestinal (%) | 216 (29.9) | 19 (21.6) | 197 (31.0) | 0.070 |
 Respiratory (%) | 212 (29.3) | 22 (25.0) | 190 (29.9) | 0.34 |
 Renal/genital (%) | 91 (12.6) | 16 (18.2) | 75 (11.8) | 0.091 |
 Skeletal (%) | 50 (6.9) | 15 (17.0) | 35 (5.5) | 0.000064 |
 Craniofacial (%) | 39 (5.4) | 8 (9.1) | 31 (4.9) | 0.10 |
 Dermatologic (%) | 29 (4.0) | 6 (6.8) | 23 (3.6) | 0.15 |
 Congenital structural malformation (%) | 319 (44.1) | 51 (58.0) | 268 (42.2) | 0.0053 |
Follow-up characteristics | ||||
 Death (%) | 51 (7.1) | 17 (19.3) | 34 (5.4) | < 0.00001 |
 Developmental delay (%) | 99 (13.7) | 39 (44.3) | 60 (9.4) | < 0.00001 |
 Growth delay (%) | 55 (7.6) | 29 (31.9) | 26 (4.1) | < 0.00001 |
 Neurodevelopmental delay (%) | 66 (9.1) | 29 (31.9) | 37 (5.9) | < 0.00001 |