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Table 5 Means, standard deviations, correct percentages and skewness and kurtosis values of the basic cognitive area items

From: The GAIRS Checklist: a useful global assessment tool in patients with Rett syndrome

Basic cognitive area

Mean

Standard deviation

%

Skewness

Kurtosis

Object recognition

3.43

1.174

68.6

.057

− 1.079

Color discrimination

2.65

1.351

53.0

.364

− .966

Geometric form discrimination

2.21

1.387

44.2

.818

− .480

Measure concepts

1.78

1.124

35.6

1.709

2.553

Spatial concepts

1.29

.844

25.8

3.204

2.450

Human body discriminations

2.03

1.226

40.6

.981

.185

Time concepts

1.33

.943

26.6

2.973

8.404

Cause-effect relationship

1.19

.720

23.8

3.997

2.450

Total score

1.988

.93

39.8

1.410

1.845