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Table 5 Intelligence (Effects of age, status, gender, and Centre)

From: The impact of study design and diagnostic approach in a large multi-centre ADHD study: Part 2: Dimensional measures of psychopathology and intelligence

   

Age effects

 

Centre effects°

 

Gender effects°

 

Status effects°

 

N

 

rho

 

p

 

Q

 

Crit

 

Sig

 

Q

 

Crit

 

Sig

 

Q

 

Crit

 

Sig

IQ

1828

 

-0.106

 

0.000

 

91.7

 

23.4

 

***

 

4.49

 

4.19

 

*

 

7.5

 

4.2

 

*

V §

1844

 

-0.137

 

0.000

 

136.2

 

21.7

 

***

 

8.58

 

4.01

 

**

 

10.9

 

4.0

 

**

S §

1788

 

-0.117

 

0.000

 

86.9

 

21.6

 

***

 

3.76

 

4.17

   

5.1

 

4.2

 

*

PC §

1788

 

-0.060

 

0.012

 

110.6

 

21.5

 

***

 

8.78

 

4.03

 

**

 

0.7

 

4.0

  

BD §

1845

 

-0.007

 

0.777

 

30.5

 

19.9

 

**

 

2.67

 

3.97

   

7.7

 

4.0

 

**

DS §

1820

 

0.002

 

0.918

 

42.7

 

21.7

 

***

 

0.41

 

4.03

   

16.3

 

4.0

 

***

  1. IQProrated IQ
  2. VVocabulary
  3. SSimliarities
  4. PCPicture Completion
  5. BDBlock Design
  6. DSDigit Span
  7. °Three-way analysis; dependent scores are
  8. adjusted for age (residuals of linear regression)
  9. § Analyses with collapsed israel samples
  10. Q Test statistic of robust 3-way effects
  11. Crit α = .05 critical value
  12. Sig Two sided α-level
  13. * p < 0.05
  14. ** p < .0.01
  15. *** p < .0.001