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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