Table 1 Comparison of demographic characteristics of the preterm infants in the intervention and the control groups

Gestational ages (weeks)

0.75 *

34.57 ± 1.21

34.62 ± 1.39

Birth weight (gr)

0.91*

1972.25 ± 431.70

1999.25 ± 434.10

After weight

0.91*

1957.87 ± 425.22

1991.12 ± 426.68

Birth head circumference (Cm)

0.75*

34.35 ± 1.05

34.50 ± 1.10

1-min APGAR score

1.00 *

8.22 ± 0.97

8.22 ± 1.02

5- min APGAR score

1.00 *

9.12 ± 0.82

9.10 ± 0.84

Duration of hospitalization

1.00 *

3.07 ± 1.30

2.97 ± 1.14

Times of heel lance

1.00 *

2 ± 0.87

2.05 ± 0.90

Time duration of the last feeding(min)

0.98 *

38.37 ± 4.58

39 ± 4.26

Gender

Girl

0.82 **

17(42.5)

18(45)

Boy

23 (57.5)

22(55)

Twins

Yes

0.64 **

3(7.5)

2(5)

No

37(92.5)

38(95)

Type of feeding

Breast feeding

0.43 **

61(72.5)

32(80)

Bottle feeding

19(27.5)

8(20)

Type of delivery

Vaginal delivery

0.39 **

34(85)

31(77.5)

Cesarean

6(15)

9(22.5)