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Table 9 Transformation of total scale scores

From: The screen for cognitive impairment in psychiatry: diagnostic-specific standardization in psychiatric ill patients

< Secondary school

≥ Secondary school

18-39

40-55

18-39

40-55

PD

P

z

T

IQ

PD

P

z

T

IQ

PD

P

z

T

IQ

PD

P

z

T

IQ

0-35

1

< −2.18

< 28

< 67

0-20

1

< −2.26

< 27

< 66

0-20

1

< −3.47

< 15

< 48

0-35

1

< −2.28

< 27

< 66

0-35

1

< −2.18

< 28

< 67

21-25

1

−2.26

27

66

21-25

1

< −3.47

< 15

< 48

0-35

1

< −2.28

< 27

< 66

0-35

1

< −2.18

< 28

< 67

26-30

2

−1.93

31

71

26-30

1

−3.47

15

48

0-35

1

< −2.28

< 27

< 66

0-35

1

< −2.18

< 28

< 67

31-35

6

−1.60

34

76

31-35

1

−3.072

19

54

0-35

1

< −2.28

< 27

< 66

36-40

1

−2.18

28

67

36-40

10

−1.27

37

81

36-40

1

−2.673

23

60

36-40

1

−2.28

27

66

41-45

2

−1.77

32

73

41-45

17

−0.93

41

86

41-45

1

−2.274

27

66

41-45

3

−1.91

31

71

46-50

7

−1.36

36

80

46-50

26

−0.60

44

91

46-50

2

−1.876

31

72

46-50

6

−1.54

35

77

51-55

19

−0.95

40

86

51-55

39

−0.27

47

96

51-55

6

−1.477

35

78

51-55

12

−1.17

38

82

56-60

33

−0.54

45

92

56-60

54

0.06

51

101

56-60

14

−1.079

39

84

56-60

21

−0.80

42

88

61-65

45

−0.13

49

98

61-65

64

0.39

54

106

61-65

25

−0.68

43

90

61-65

32

−0.43

46

94

66-70

56

0.28

53

104

66-70

76

0.72

57

111

66-70

38

−0.28

47

96

66-70

44

−0.06

49

99

71-75

67

0.69

57

110

71-75

85

1.05

61

116

71-75

53

0.12

51

102

71-75

60

0.31

53

105

76-80

82

1.09

61

116

76-80

91

1.38

64

121

76-80

66

0.52

55

108

76-80

75

0.68

57

110

81-85

93

1.50

65

123

81-85

95

1.71

67

126

81-85

79

0.91

59

114

81-85

84

1.05

60

116

86-90

99

1.91

69

129

86-90

96

2.04

70

131

86-90

89

1.31

63

120

86-90

91

1.42

64

121

> 90

99

> 1.91

> 69

> 129

91-95

98

2.37

74

136

91-95

95

1.71

67

126

91-95

95

1.79

68

127

> 90

99

> 1.91

> 69

> 129

> 96

> 98

> 2.37

> 74

> 136

96-100

99

2.11

71

132

96-100

98

2.16

72

132

> 90

99

> 1.91

> 69

> 129

> 96

> 96

> 96

> 96

> 96

> 101

99

> 2.11

> 71

> 132

101-105

99

2.53

75

138

> 90

99

> 1.91

> 69

> 129

> 96

> 96

> 96

> 96

> 96

> 101

99

> 2.11

> 71

> 132

> 105

99

> 2.53

> 75

> 138

N

64

N

109

N

202

N

134

Mean

64.63

Mean

57.12

Mean

71.53

Mean

68.84

SD

12.213

SD

15.109

SD

12.544

SD

13.507

Median

64

Median

56

Median

71

Median

70

Skewness

−0.007

Skewness

0.156

Skewness

−0.123

Skewness

−0.034

Kurtosis

−0.890

Kurtosis

−0.124

Kurtosis

−0.218

Kurtosis

−0.244

Range

37-88

Range

21-94

Range

30-98

Range

38-105