Table 2 Mean values of Wechsler Intelligence Scale of control, thalassemia intermedia and thalassemia major
Wechsler Intelligence Scale | Control group | Thalassemia intermedia | Thalassemia major | F‐value | p value |
|---|---|---|---|---|---|
Mean ± SD | Mean ± SD | Mean ± SD | |||
Block design | 11.79 ± 0.94 | 6.51 ± 0.58 | 5.44 ± 0.77 | 1097.98 | 0.001 |
Similarities | 12.48 ± 0.86 | 7.08 ± 0.63 | 5.91 ± 0.98 | 1035.98 | 0.001 |
Digit span | 12.06 ± 1.20 | 6.73 ± 0.85 | 5.13 ± 1.20 | 640.03 | 0.001 |
Picture concepts | 11.73 ± 0.94 | 6.96 ± 0.77 | 5.17 ± 0.93 | 867.07 | 0.001 |
Coding | 12.94 ± 1.00 | 6.92 ± 0.69 | 5.48 ± 0.88 | 1226.03 | 0.001 |
Vocabulary | 11.67 ± 1.09 | 6.61 ± 0.72 | 5.24 ± 0.85 | 806.06 | 0.001 |
Letter–number sequencing | 11.44 ± 1.09 | 6.80 ± 0.69 | 5.61 ± 0 0.71 | 740.25 | 0.001 |
Matrix reasoning | 12.14 ± 1.19 | 6.75 ± 0.63 | 5.31 ± 0.95 | 811.20 | 0.001 |
Comprehension | 12.06 ± 1.08 | 6.22 ± 0.76 | 4.98 ± 0.88 | 987.19 | 0.001 |
Symbol search | 12.10 ± 0.95 | 6.75 ± 0.44 | 5.70 ± 0.77 | 1183.92 | 0.001 |
Picture completion | 11.48 ± 1.13 | 6.35 ± 0.80 | 5.37 ± 1.22 | 548.18 | 0.001 |
Cancellation | 10.60 ± 1.37 | 5.75 ± 0.74 | 5.04 ± 0.87 | 481.88 | 0.001 |
Information | 11.43 ± 1.10 | 6.14 ± 0.67 | 4.48 ± 0.95 | 879.91 | 0.001 |
Arithmetic | 10.62 ± 1.17 | 5.45 ± 0.81 | 4.31 ± 1.04 | 626.64 | 0.001 |
Word reasoning | 10.87 ± 1.01 | 6.63 ± 0.87 | 5.37 ± 1.03 | 512.38 | 0.001 |
Verbal Comprehension Index | 35.68 ± 4.55 | 19.90 ± 1.45 | 16.13 ± 2.19 | 636.86 | 0.001 |
Perceptual Reasoning Index | 35.67 ± 2.16 | 20.22 ± 1.24 | 15.93 ± 2.10 | 1751.70 | 0.001 |
Working Memory Index | 23.51 ± 1.60 | 13.53 ± 1.21 | 10.74 ± 1.44 | 1287.94 | 0.001 |
Processing Speed Index | 25.03 ± 1.41 | 13.65 ± 0.82 | 11.19 ± 1.36 | 2086.58 | 0.001 |
Full scale score index | 120.41 ± 5.45 | 67.31 ± 2.61 | 53.98 ± 5.89 | 2977.10 | 0.001 |