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Table 2 Comparison of demographic characteristics of the groups

From: Effect of lullaby on volume, fat, total protein and albumin concentration of breast milk in premature infants’ mothers admitted to NICU: a randomized controlled trial

Groups*

Variable

Maternal age (year)

Birth weight (g)

Gestational age (week)

Maternal weight (kg)

Economic Status

Low

n(%)

Moderate

n(%)

High

n(%)

A

SD ± Mean

29.76 ± 4.80

1681.81 ± 462.44

34.84 ± 0.83

5.52 ± 60.57

4 (12.12)

21 (63.63)

8 (24.24)

B

SD ± Mean

28.94 ± 3.14

1739.69 ± 357.19

34.81 ± 0.98

62.24 ± 7.47

0 (0.00)

30 (90.90)

3 (9.09)

C

SD ± Mean

30.82 ± 3.56

1705.29 ± 332.62

35.05 ± 0.95

64.05 ± 10.36

2 (5.88)

24 (70.58)

8 (23.53)

F

1.96

0.18

0.67

1.56

χ2:0.22

df

99

99

99

99

1

P value

0.14

0.83

0.51

0.21

0.63

  1. Groups*: A. Control, B. playing lullaby for mother,C. playing lullaby for mother while holding a photo of her own baby