Table 4.
Transformation of VLT-I subtest scores
|
< 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 |
| 0-11 |
< 3 |
< −1.72 |
< 33 |
< 74 |
0-9 |
1 |
< −2.19 |
< 28 |
< 67 |
0-5 |
1 |
< −3.45 |
< 16 |
< 48 |
0-9 |
1 |
< −2.4 |
< 26 |
< 64 |
| 0-11 |
< 3 |
< −1.72 |
< 33 |
< 74 |
0-9 |
1 |
< −2.19 |
< 28 |
< 67 |
6 |
1 |
−3.45 |
16 |
48 |
0-9 |
1 |
< −2.4 |
< 26 |
< 64 |
| 0-11 |
< 3 |
< −1.72 |
< 33 |
< 74 |
0-9 |
1 |
< −2.19 |
< 28 |
< 67 |
7 |
1 |
−3.21 |
18 |
52 |
0-9 |
1 |
< −2.4 |
< 26 |
< 64 |
| 0-11 |
< 3 |
< −1.72 |
< 33 |
< 74 |
9 |
1 |
−2.19 |
28 |
67 |
8 |
1 |
−2.96 |
20 |
56 |
0-9 |
1 |
< −2.4 |
< 26 |
< 64 |
| 0-11 |
< 3 |
< −1.72 |
< 33 |
< 74 |
10 |
2 |
−1.93 |
31 |
71 |
9 |
1 |
−2.72 |
23 |
59 |
10 |
1 |
−2.4 |
26 |
64 |
| 0-11 |
< 3 |
< −1.72 |
< 33 |
< 74 |
11 |
5 |
−1.67 |
33 |
75 |
10 |
1 |
−2.48 |
25 |
63 |
11 |
2 |
−2.14 |
29 |
68 |
| 12 |
3 |
−1.72 |
33 |
74 |
12 |
9 |
−1.41 |
36 |
79 |
11 |
3 |
−2.24 |
28 |
66 |
12 |
3 |
−1.89 |
31 |
72 |
| 13 |
9 |
−1.45 |
35 |
78 |
13 |
15 |
−1.15 |
39 |
83 |
12 |
4 |
−1.99 |
30 |
70 |
13 |
5 |
−1.63 |
34 |
76 |
| 14 |
13 |
−1.18 |
38 |
82 |
14 |
22 |
−0.89 |
41 |
87 |
13 |
5 |
−1.75 |
33 |
74 |
14 |
9 |
−1.37 |
36 |
79 |
| 15 |
19 |
−0.9 |
41 |
86 |
15 |
28 |
−0.62 |
44 |
91 |
14 |
8 |
−1.51 |
35 |
77 |
15 |
15 |
−1.12 |
39 |
83 |
| 16 |
30 |
−0.63 |
44 |
91 |
16 |
33 |
−0.36 |
46 |
95 |
15 |
10 |
−1.26 |
37 |
81 |
16 |
22 |
−0.86 |
41 |
87 |
| 17 |
43 |
−0.36 |
46 |
95 |
17 |
44 |
−0.10 |
49 |
98 |
16 |
14 |
−1.02 |
40 |
85 |
17 |
28 |
−0.61 |
44 |
91 |
| 18 |
51 |
−0.08 |
49 |
99 |
18 |
56 |
0.16 |
52 |
102 |
17 |
19 |
−0.78 |
42 |
88 |
18 |
36 |
−0.35 |
46 |
95 |
| 19 |
57 |
0.19 |
52 |
103 |
19 |
64 |
0.42 |
54 |
106 |
18 |
26 |
−0.54 |
45 |
92 |
19 |
46 |
−0.10 |
49 |
99 |
| 20 |
63 |
0.46 |
55 |
107 |
20 |
72 |
0.68 |
57 |
110 |
19 |
37 |
−0.29 |
47 |
96 |
20 |
54 |
0.16 |
52 |
102 |
| 21 |
70 |
0.73 |
57 |
111 |
21 |
81 |
0.94 |
59 |
114 |
20 |
47 |
−0.05 |
49 |
99 |
21 |
61 |
0.41 |
54 |
106 |
| 22 |
80 |
1.01 |
60 |
115 |
22 |
89 |
1.20 |
62 |
118 |
21 |
56 |
0.19 |
52 |
103 |
22 |
73 |
0.67 |
57 |
110 |
| 23 |
88 |
1.28 |
63 |
119 |
23 |
94 |
1.47 |
65 |
122 |
22 |
66 |
0.43 |
54 |
107 |
23 |
82 |
0.93 |
59 |
114 |
| 24 |
94 |
1.55 |
66 |
123 |
24 |
97 |
1.73 |
67 |
126 |
23 |
75 |
0.68 |
57 |
110 |
24 |
88 |
1.18 |
62 |
118 |
| 25 |
98 |
1.83 |
68 |
127 |
25 |
98 |
1.99 |
70 |
130 |
24 |
82 |
0.92 |
59 |
114 |
25 |
94 |
1.44 |
64 |
122 |
| 26-30 |
99 |
> 1.83 |
> 68 |
> 127 |
26 |
99 |
2.25 |
72 |
134 |
25 |
87 |
1.16 |
62 |
117 |
26 |
96 |
1.69 |
67 |
125 |
| 26-30 |
99 |
> 1.83 |
> 68 |
> 127 |
27 |
99 |
2.51 |
75 |
138 |
26 |
93 |
1.41 |
64 |
121 |
27 |
98 |
1.95 |
69 |
129 |
| 26-30 |
99 |
> 1.83 |
> 68 |
> 127 |
28-39 |
99 |
> 2.51 |
> 75 |
> 138 |
27 |
97 |
1.65 |
66 |
125 |
28 |
99 |
2.20 |
72 |
133 |
| 26-30 |
99 |
> 1.83 |
> 68 |
> 127 |
28-39 |
99 |
> 2.51 |
> 75 |
> 138 |
28 |
98 |
1.89 |
69 |
128 |
29 |
99 |
2.46 |
75 |
137 |
| 26-30 |
99 |
> 1.83 |
> 68 |
> 127 |
28-39 |
99 |
> 2.51 |
> 75 |
> 138 |
29 |
99 |
2.13 |
71 |
132 |
30 |
99 |
> 2.46 |
> 75 |
> 137 |
| 26-30 |
99 |
> 1.83 |
> 68 |
> 127 |
28-39 |
99 |
> 2.51 |
> 75 |
> 138 |
30 |
99 |
2.38 |
74 |
136 |
30 |
99 |
> 2.46 |
> 75 |
> 137 |
| N |
64 |
N |
109 |
N |
204 |
N |
137 |
||||||||||||
| Mean |
18.31 |
Mean |
17.39 |
Mean |
20.21 |
Mean |
19.38 |
||||||||||||
| SD |
3.660 |
SD |
3.829 |
SD |
4.120 |
SD |
3.913 |
||||||||||||
| Median |
18 |
Median |
17 |
Median |
20 |
Median |
19 |
||||||||||||
| Skewness |
0.048 |
Skewness |
−0.045 |
Skewness |
−0.378 |
Skewness |
−0.125 |
||||||||||||
| Kurtosis |
−1,023 |
Kurtosis |
−0.456 |
Kurtosis |
0.340 |
Kurtosis |
−0.380 |
||||||||||||
| Range | 12-25 | Range | 9-27 | Range | 6-30 | Range | 10-29 | ||||||||||||