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Table 1 Demographic information

From: ADHD subtype-specific cognitive correlates and association with self-esteem: a quantitative difference

Demographic information

Variable

  

value

p

Group difference*

Sample size (n)

  

139

  
 

subtype

ADHD-H (%)

71 (51.1%)

  
  

ADHD-I (%)

35 (25.2%)

  
  

ADHD-C (%)

33 (23.7)

  

Age

Mean (SD)

Total

8.20 (2.50)

0.001

ADHD-H < ADHD-I

  

ADHD-H

7.45 (2.45)

  
  

ADHD-I

9.54 (2.29)

  
  

ADHD-C

8.42 (2.26)

  

Child order among siblings

1st

ADHD-H/I/C

41 / 18 / 27

  

2nd

ADHD-H/I/C

22 / 8 / 5

  

3rd

ADHD-H/I/C

8 / 7 / 0

  

4th

ADHD-H/I/C

0 / 1 / 0

  

5th and higher

ADHD-H/I/C

0 / 1 / 1

  

Gender (n)

Male (female)

 

112 (27)

  

CPRS-RS

Inattaention

ADHD-H (SD)

26.97 (4.81)

0.001

ADHD-I > ADHD-H

  

ADHD-I (SD)

40.60 (4.37)

 

ADHD-C > ADHD-H

  

ADHD-C (SD)

42.72 (4.48)

  
 

Hyperactivity

ADHD-H (SD)

33.11 (4.37)

0.001

ADHD-H > ADHD-I

  

ADHD-I (SD)

23.42 (4.69)

 

ADHD-C > ADHD-I

  

ADHD-C (SD)

40.66 (4.18)

  
 

ADHD-index

ADHD-H (SD)

59.14 (4.54)

0.001

ADHD-C > ADHD-I

  

ADHD-I (SD)

64.42 (6.26)

 

ADHD-C > ADHD-H

  

ADHD-C (SD)

83.30 (7.40)

  
  1. Note: SD Standard Deviation, ADHD-H Predominantly hyperactive, ADHD-I Predominantly inattentive, ADHD-C Combined, CPRS-RS Conners Parent Rating Scale-Revised: Short form. Between-group differences in demographic continuous variables were explored by F-test. * indicates that only significant group difference between ADHD subtypes are presented.