Table 1

Studies included in this review

Lead authors

Publication date and reference

IQ test

N

Age

BMI

IQ mean

IQ SD


NART studies:

Kingston

1996 [41]

NART

46

22.1

14.7

108.9

5.7

Mathias

1998 [32]

NART-R

34

22

15.3

96.1

8.8

Seed

2000 [42]

NART

18

27.3

15.2

111.5

9.4

Tchanturia

2004 [43]

NART-R

34

26.7

13.7

111.4

6.5

Tchanturia

2004 [37]

NART-R

34

27.2

13.7

111.1

7

Fowler

2006 [44]

NART

25

16.9

15.3

108.3

5.5

Tchanturia

2007 [36]

NART

29

28.5

15.5

115.2

5.5

Bosanac

2007 [35]

NART

16

28.9

15.2

109

8.6

Lopez

2008 [45]

NART

37

28.4

15.8

112.8

6.8

Southgate

2008 [46]

NART

20

26.8

16.3

116.8

4.8

Dickson

2008 [31]

NART

24

30.6

16

114.5

5

Tchanturia

2008 [47]

NART

27

28.8

14.3

112.7

6.5

Key

2006 [48]

NART

11

27.65

16.8

109

11.1

Thompson

1993 [49]

NART

10

25.8

115.8

NR

WAIS studies:

Pendleton-Jones

1991 [38]

WAIS

30

24.4

59% ideal

104.4

12.6

Mathias

1998 [32]

WAIS-R

34

22

15.3

97.3

16.3

Galderisi

2003 [50]

WAIS

14

Approximately 23.7

15.4

100

10.8

Holliday

2005 [51]

WAIS-R

47

26.3

17.9

111.3

7.6

Connan

2006 [52]

WAIS-R

16

25.4

16.2

117.6

16.7

Steinglass

2006 [53]

WASI

15

25.6

19

109.8

12.1

McCormick

2008 [54]

WAIS

16

Approximately 25.2

NR

96.5

12.9

Dura

1989 [10]

WAIS-R

20

14.7

NR

102.5

NR

McDowell

2003 [55]

WAIS-R

98

27.2

15.9

98.2

12.1

Grunwald

2001 [56,57]

HAWIK

10

15.9

15.2

115.2

8

Gordon

1984 [58]

WAIS and WISC-R

10

15.7

NR

112.7

13.1

Grunwald

2002 [59]

HAWIK

16

15.3

14.8

113.5

12.4

Bayless

2002 [60]

WAIS

59

24.3

16.8

103.6

12.1

Wilbur

1981 [61]

WAIS/WISC

34

17

NR

111

NR

Ranseen

1992 [62]

WAIS-R

38

21.7

NR

99.5

16.6

Small

1982 [63]

WAIS

27

20.6

NR

108.1

10.4


BMI = Body Mass Index; HAWIK = Hamburg-Wechsler-Intelligenztest für Kinder (German version of WAIS); NART(-R) = National Adult Reading Test (Revised); NR = not reported; SD = standard deviation; WAIS(-R) = Wechsler Adult Intelligence Scale (Revised); WASI = Wechsler Abbreviated Scale of Intelligence (short form of WAIS); WISC(-R) = Wechsler Children Intelligence Scale (Revised).

Lopez et al. Annals of General Psychiatry 2010 9:40   doi:10.1186/1744-859X-9-40

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