| Risk factor | ARF group | Non-ARF group | Statistical value | P |
---|---|---|---|---|---|
 | Number of cases | 30 | 98 |  |  |
General perinatal factors | Age of mother (years)a | 32.66 ± 3.49 | 33.26 ± 3.77 | 0.773 | 0.441 |
Father’s age (years)a | 33.86 ± 3.91 | 34.94 ± 4.68 | 1.148 | 0.253 | |
Maternal hyperemesisb | 10 (33.3) | 24 (24.5) | 0.921 | 0.337 | |
GDMb | 7 (23.3) | 37 (37.8) | 2.118 | 0.146 | |
Twin pregnanciesb | 8 (26.7) | 30 (30.6) | 0.171 | 0.679 | |
SGAb | 5 (16.7) | 6 (6.1) | 3.251 | 0.071 | |
LGAb | 0 (0) | 2 (2.0) | Â | 1.000 | |
Complications during hospitalization | Neonatal asphyxiab | 12 (40.0) | 19 (19.4) | 5.317 | 0.021* |
NRDSb | 17 (56.7) | 57 (58.2) | 0.021 | 0.885 | |
BPDb | 10 (33.3) | 10 (10.2) | 7.648 | 0.002** | |
IVHb | 12 (40.0) | 18 (18.4) | 5.990 | 0.014* | |
Hydrocephalusb | 1 (3.3) | 0 (0) | Â | 0.234 | |
Brain damage in white matterb | 3 (10.0) | 1 (1.0) | Â | 0.040* | |
Electroencephalogram abnormalitiesb | 13 (43.3) | 35 (35.7) | 0.569 | 0.451 | |
Septicaemiab | 10 (33.3) | 13 (13.3) | 6.276 | 0.012* | |
Meningitisb | 2 (6.7) | 3 (3.1) | Â | 0.334 | |
NECb | 4 (13.3) | 6 (6.1) | 0.569 | 0.369 | |
ROPb | 5 (16.7) | 6 (6.1) | 6.276 | 0.012* | |
Treatment during hospitalization | Hormonesb | 3 (10.0) | 7 (7.1) | 0.015 | 0.610 |
Blood transfusionb | 10 (33.3) | 16 (16.3) | 4.104 | 0.043* | |
PSb | 16 (53.3) | 28 (28.6) | 6.243 | 0.012* | |
Levothyroxineb | 14 (46.7) | 21 (21.4) | 7.545 | 0.006** | |
Ventilator useb | 23 (76.7) | 71 (72.4) | 0.209 | 0.647 | |
Invasive ventilatorb | 16 (53.5) | 19 (19.4) | 13.322 | 0.000*** | |
Surgeryb | 0(0.00) | 6 (6.1) | Â | 0.335 | |
Length of stay in hospital (days)a | 38.36 ± 24.49 | 29.24 ± 19.33 | -1.869 | 0.069 |