Table 3.
Results of the binary logistic regression model for predictors of retinopathy of prematurity.
| Variables in the Equation | B | S.E. | Wald | Exp (B) | 95% C.I.for EXP (B) | P value | ||
|---|---|---|---|---|---|---|---|---|
| Lower | Upper | |||||||
| Last Stepa | Length of hospital stay | .008 | .004 | 3.031 | 1.008 | .999 | 1.016 | .082 |
| Body weight | .002 | .001 | 10.146 | 1.002 | 1.001 | 1.004 | .001 | |
| History of multiple birth | 6.564 | .087 | ||||||
| History of multiple birth (twin) | -.910 | .557 | 2.667 | .402 | .135 | 1.200 | .102 | |
| History of multiple birth (triplet) | .639 | .518 | 1.519 | 1.895 | .686 | 5.233 | .218 | |
| History of multiple birth (quadruplet) | -1.468 | 1.143 | 1.651 | .230 | .025 | 2.163 | .199 | |
| Blood transfusion (yes) | .788 | .424 | 3.456 | 2.200 | .958 | 5.051 | .063 | |
| Phototherapy (yes) | -.631 | .359 | 3.094 | .532 | .264 | 1.075 | .079 | |
| Constant | -2.901 | 1.019 | 8.109 | .055 | .004 | |||
a
Variable(s) entered in step 1: Gender, length of hospital stay, gestational age (GA), birth weight (BW), history of multiple birth, intraventricular hemorrhage (IVH), sepsis, necrotizing enterocolitis (NEC), artificial ventilation, congenital heart disease (CHD), anemia, blood transfusion, respiratory distress syndrome (RDS), phototherapy, delivery mode. Variable(s) removed in Step 2: NEC, Step 3: IVH, Step 4: Artificial Ventilation, Step 5:GA, Step 6: Anemia, Step 7: Delivery Mode, Step 8: Sepsis, Step 9: CHD, Step 10: RDS, Step 11: Gender. Model fit measures: Deviance 189.108, Cox and Snell R squared .152, Nagelkerke R squared .203