Social class

Underweight

(n = 53)

N (%)

Normal

(n = 912)

N (%)

Overweight

(n = 172)

N (%)

Obese

(n = 61)

N (%)

χ²

P value

High

26 (4.1)

494 (77.6)

83 (13.0)

34 (5.3)

2.55, df = 3

0.47

Middle

25 (4.8)

389 (74.0)

85 (16.2)

27 (5.1)

2.94, df = 3

0.40

Low

2 (5.7)

29 (82.9)

4 (11.4)

0 (0.0)

1.54, df = 2

0.46