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Table 1 General characteristics of children with attention deficit hyperactivity disorder and healthy controls

From: The association between dietary polyphenol intake and attention-deficit hyperactivity disorder: a case-control study

Variable

ADHD

(n = 200)

Healthy Controls

(n = 200)

P

Gender (%)

  Male

79.5

76.4

0.264

  Female

20.5

23.6

Age (year)

7.07 ± 1.71

6.93 ± 1.77

0.439

Weight (kg)

20.50 ± 6.43

23.41 ± 9.45

< 0.001

Height (cm)

120.86 ± 9.77

123.97 ± 11.24

0.003

BMI (kg/m2)

13.71 ± 2.49

14.69 ± 3.25

0.001

Socio-economic status (%)

  Low

18.0%

1.5%

< 0.001

  Middle

65.5%

44.2%

  High

16.5%

54.3%

  1. ADHD Attention deficit hyperactivity disorder, BMI Body mass index