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Table 4 Distributions of WAIS-R diagnostic labels according to WAIS-R FSIQ measurement and SPM FSIQ’ estimation in DM1 patients

From: Comparisons of intellectual capacities between mild and classic adult-onset phenotypes of myotonic dystrophy type 1 (DM1)

 

WAIS-R FSIQ

SPM FSIQ’

 

( n =188)

( n =187)

 

WAIS-R diagnostic labels

Frequency

Valid percent

Mean ± SD

Frequency

Valid percent

Mean ± SD

p Value a

Very superior (130 and above)

_

_

_

_

_

_

_

Superior (120–129)

_

_

_

_

_

_

_

High average (110–119)

1

0.5

119.0

_

_

_

_

Average (90–109)

33

17.6

94.6 ± 3.7

31

16.6

93.1 ± 3.0

0.008

Low average (80–89)

87

46.3

84.0 ± 2.7

72

38.5

84.5 ± 3.3

n.s.

Borderline (70–79)

58

30.9

75.3 ± 3.0

74

39.6

75.5 ± 2.8

n.s.

Deficiency (69 and below)

9

4.8

67.0 ± 2.8

10

5.3

66.9 ± 2.7

n.s.

  1. WAIS-R = Wechsler Adult Intelligence Scales-Revised; FSIQ = Full-Scale IQ; SPM = Standard Progressive Matrices.
  2. aDifferences between mean WAIS-R FSIQ and mean SPM FSIQ’ for each WAIS-R diagnostic labels were calculated using a one-sample t-test where the known value was the corresponding mean WAIS-R FSIQ.