Table 3 Regression analysis of potential risk factors for increasing the preterm developmental defects of enamel score.
T score (M + P score) | Descriptive analysis | Regression analysis | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Independent variable | n | Average | SD | Median | IQR | P-value | B | 95% CI | P-value | |
Prenatal risk factors | ||||||||||
Advanced maternal age | Yes | 59 | 10.46 | 10.86 | 7.00 | 13.00 | 0.0795 | 3.5041 | − 0.3978 to 7.4060 | 0.0778 |
No | 43 | 6.95 | 8.14 | 4.00 | 10.00 | Reference | ||||
Maternal abortion history | Yes | 27 | 11.07 | 12.51 | 7.00 | 14.00 | 0.6173 | 3.1241 | − 1.2933 to 7.5415 | 0.1633 |
No | 60 | 7.95 | 7.97 | 6.50 | 9.50 | Reference | ||||
Neonatal risk factors | ||||||||||
Gestational age (weeks) | < 28 | 43 | 14.09 | 13.31 | 10.00 | 13.00 | 0.0047* | 6.4797 | 2.4966–10.4628 | 0.0017* |
≥ 28 | 75 | 7.61 | 8.52 | 5.00 | 12.00 | Reference | ||||
Birth weight (g) | < 1000 | 47 | 12.62 | 11.60 | 10.00 | 12.00 | 0.0100* | 4.3917 | 0.3851–8.3982 | 0.0320* |
≥ 1000 | 71 | 8.23 | 10.17 | 5.00 | 12.00 | Reference | ||||
Delivery mode | c-sec | 97 | 10.42 | 11.05 | 7.00 | 13.00 | 0.2051 | 2.5227 | − 7.8629 to 2.8175 | 0.3514 |
NVSD | 20 | 7.90 | 10.63 | 3.00 | 9.50 | Reference | ||||
APGAR score 1 mina | < 7 | 95 | 10.11 | 10.55 | 7.00 | 13.00 | 0.0029* | 6.9386 | 0.7702–13.1070 | 0.0278* |
≥ 7 | 12 | 3.17 | 5.70 | 0.00 | 3.50 | Reference | ||||
APGAR score 5 mina | < 8 | 84 | 10.26 | 9.72 | 8.00 | 11.50 | 0.0005* | 4.3489 | − 0.4268 to 9.1245 | 0.0738 |
≥ 8 | 23 | 5.91 | 11.99 | 2.00 | 4.00 | Reference | ||||
Multiple pregnancy | Multiplet | 44 | 9.66 | 12.42 | 6.00 | 12.00 | 0.2821 | -0.5327 | − 4.6975 to 3.6321 | 0.8005 |
singlet | 73 | 10.19 | 10.09 | 8.00 | 13.00 | Reference | ||||
Postnatal risk factors | ||||||||||
Medical complications | ||||||||||
Bronchopulmonary dysplasia | Yes | 66 | 12.88 | 12.14 | 10.00 | 11.00 | 0.0001* | 7.6496 | 3.9083 to 11.3910 | < 0.0001* |
No | 48 | 5.23 | 5.68 | 3.50 | 6.50 | Reference | ||||
Ricket | Yes | 27 | 12.44 | 13.00 | 9.00 | 11.00 | 0.1591 | 3.6513 | − 0.9505 to 8.2532 | 0.1187 |
No | 87 | 8.79 | 9.68 | 7.00 | 11.00 | Reference | ||||
Intraventricular hemorrhage | Yes | 40 | 12.88 | 12.60 | 9.00 | 13.00 | 0.0391* | 4.9561 | 0.9168–8.9954 | 0.0166* |
No | 74 | 7.92 | 8.98 | 6.00 | 10.00 | Reference | ||||
Necrotizing enterocolitis | Yes | 13 | 22.92 | 16.18 | 27.00 | 27.00 | 0.0022* | 14.9726 | 9.4170–20.5282 | < 0.0001* |
No | 101 | 7.95 | 8.37 | 7.00 | 10.00 | Reference | ||||
Hyperbilirubinemia | Yes | 73 | 8.44 | 10.04 | 6.00 | 11.00 | 0.1018 | -3.3909 | − 7.4633 to 0.6815 | 0.1018 |
No | 41 | 11.83 | 11.36 | 10.00 | 11.00 | Reference | ||||
Intrauterine growth restriction | Yes | 21 | 6.24 | 5.45 | 6.00 | 8.00 | 0.2111 | -4.3397 | − 9.4535 to 0.7742 | 0.0954 |
No | 90 | 10.58 | 11.50 | 7.50 | 13.00 | Reference | ||||
Hypocalcemia | Yes | 18 | 10.28 | 9.35 | 7.00 | 11.00 | 0.5090 | 0.7361 | − 4.6864 to 6.1587 | 0.7884 |
No | 96 | 9.54 | 10.87 | 7.00 | 11.50 | Reference | ||||
Sepsis | Yes | 31 | 10.74 | 10.95 | 9.00 | 14.00 | 0.5882 | 1.4889 | − 2.9476 to 5.9254 | 0.5074 |
No | 83 | 9.25 | 10.52 | 7.00 | 11.00 | Reference | ||||
Parenteral feeding (month)a | ≥ 1 | 28 | 12.14 | 11.28 | 9.00 | 10.00 | 0.0351* | 4.3400 | − 0.0891 to 8.7692 | 0.0547 |
< 1 | 71 | 7.80 | 9.46 | 5.00 | 12.00 | Reference | ||||
Endotracheal intubation (month)a | ≥ 1 | 23 | 13.43 | 13.12 | 9.00 | 10.00 | 0.0426* | 5.0583 | 0.2779–9.8387 | 0.0383* |
< 1 | 85 | 8.38 | 9.36 | 6.00 | 12.00 | Reference | ||||
NICU admission (month)a | ≥ 2 | 69 | 12.20 | 10.58 | 10.00 | 11.00 | < 0.0001* | 7.3458 | 3.5820–11.1095 | 0.0002* |
< 2 | 42 | 4.86 | 7.35 | 2.00 | 7.00 | Reference | ||||
