Characteristics

Normal weight

(No, =40)

Under weight

(No, =40)

Chi square test/

Independent t test**

No

%

No

%

x²/t**

p value

Sex

Female

14

35.0%

17

42.5%

0.474

0.491

Male

26

65.0%

23

57.5%

Socioeconomic

Low

Socioeconomic

10

25.0%

34

85.0%

29.455

<0.001

Moderate

Socioeconomic

28

70.0%

5

12.5%

High

Socioeconomic

2

5.0%

1

2.5%

Age (m)

Mean ± SD

6.80 ± 1.80

6.70 ± 1.70

0.256**

0.799

Age z core

Mean ± SD

0.28 ± 1.03

−0.28 ± 0.97

0.256

0.799

Weight (kg)

Mean ± SD

7.90 ± 1.22

5.65 ± 0.90

9.438**

<0.001

Length (cm)

Mean ± SD

67.50 ± 4.15

59.78 ± 3.52

8.978**

<0.001

Z score: weight (kg)

Mean ± SD

0.73 ± 0.78

−0.73 ± 0.58

9.438**

<0.001

Z score: length (cm)

Mean ± SD

0.71 ± 0.76

−0.71 ± 0.65

8.978**

<0.001