Variable

Pre term Control group (n = 30)

Pre term RDS group (n = 30)

Chi square test

Mean ± SD

Range

Mean ± SD

Range

X2/t

p-value

Gestational age {GA} (WK)

35.73 ± 0.45

(35 - 36)

35.43 ± 0.679

(34 - 36)

−2.018

0.058

Birth Weight {BW} (Kg)

2.49 ± 0.96

(2.3 - 2.7)

2.40 ± 0.21

(2.1 - 2.7)

−2.093

0.051

Birth length{BL} (cm)

45.77 ± 1.22

(44 - 48)

44.87 ± 2.315

(40 - 48)

−1.883

0.065

Head circumference {HC} (cm)

33.96 ± 0.67

(33 - 35)

33.38 ± 1.99

(25 - 35.5)

1.513

0.153

Gender

{n (%)}

Male

14

46.5%

15

50%

0.258

0.795

Female

16

53.5%

15

50%

Apgar

1 min

7.30 ± 0.75

(6 - 8)

5.87 ± 1.28

(3 - 7)

5.280

0.001

5 min

8.96 ± 0.18

(8 - 9)

8.37 ± 0.96

(6 - 9)

3.309

0.001

Blood ?gases

PH

7.39 ± 0.02

7.34 - 7.43

7.32 ± 0.08

7.1 - 7.49

4.524

0.001

PCO2 (mmHg)

39.75 ± 2.02

36.5 - 44

42.89 ± 5.29

36 - 56

−3.034

0.004

pO2 (mmHg)

78.52 ± 28.40

45 - 154

45.74 ± 4.53

35.3 - 55

6.242

0.000

HCO3 (mmol/L)

22.82 ± 0.49

22 - 23.6

18.79 ± 4.29

10.2 - 28.2

5.119

0.000