Table 2 The distribution of retinopathy of prematurity risk factors in single- and multiple-born neonates

Gestational age

(weeks)

33.72 ± 2.83

(33.31–34.14)

33.15 ± 1.80

(32.88–33.43)

32.47 ± 1.63

(32.23–32.72)

33.13 ± 2.22

(32.94–33.32)

Birth weight (gram)

2114.63 ± 683.90 (2014.05-2215.22)

1849.74 ± 369.45 (1793.80-1905.67)

1641.78 ± 319.53

(1593.55-1690.02)

1873.00 ± 526.03 (1827.731918.28)

Duration of NICU admission (days)

13.63 ± 14.87

(11.44–15.81)

10.91 ± 9.71

(9.44–12.38)

14.14 ± 10.44

(12.56–15.72)

12.91 ± 12.01

(11.88–13.94)

Duration of oxygen support (days)

7.36 ± 10.72

(5.58–9.15)

5.76 ± 7.61

(4.38–7.13)

6.03 ± 5.86

(4.86–7.20)

6.46 ± 8.60

(5.57–7.35)

Sepsis

10

(5.6%)

1

(0.6%)

4

(2.3%)

15

(2.9%)

Gender

(Female/Male)

73/107

(40.6%/59.4%)

73/97

(42.9%/57.1%)

84/87

(49.1%/50.9%)

230/291

(44.1-55.9%)

Blood transfusion

28

(15.6%)

19

(11.2%)

26

(15.2%)

73

(14%)

Maternal comorbidity

39

(21.7%)

25

(14.7%)

30

(18.9%)

94

(18.0%)

Neonatal comorbidity

19

(10.6%)

14

(8.2%)

18

(10.5%)

51

(9.8%)