Table 4. Means and standard deviations of the patient scores according to age at diagnosis.
| Variables | Age at diagnosis | T valueP value | |
|---|---|---|---|
| < 8 yr (n = 29) | ≥ 8 yr (n = 29) | ||
| Mean (SD) | Mean (SD) | ||
| Intelligence | |||
| FSIQ | 83.31 (18.48) | 96.55 (20.21) | −2.42* |
| VIQ | 91.41 (18.48) | 102.79 (17.33) | −2.44* |
| PIQ | 77.72 (16.03) | 90.59 (23.48) | −2.63* |
| Information | 7.52 (3.33) | 9.41 (2.81) | −2.32* |
| Comprehension | 8.48 (3.25) | 10.59 (3.29) | −2.42* |
| Similarities | 11.30 (3.90) | 12.24 (2.87) | −2.38* |
| Arithmetic | 7.79 (3.18) | 11.52 (3.37) | −4.33‡ |
| Digit span | 9.39 (4.16) | 10.10 (3.18) | −0.73 |
| Vocabulary | 9.03 (3.21) | 11.10 (3.47) | −2.46* |
| Digit symbol | 4.93 (2.67) | 7.41 (3.78) | −2.88† |
| Picture completion | 9.10 (3.29) | 10.10 (3.17) | −1.68 |
| Picture arrangement | 6.18 (2.33) | 9.07 (3.36) | −3.76‡ |
| Block design | 7.52 (3.56) | 10.28 (3.99) | −2.77† |
| Object assembly | 7.28 (3.16) | 9.85 (4.01) | −2.84† |
| Memory quotient | 84.57 (12.09) | 90.48 (18.22) | −1.44 |
| Verbal memory | |||
| Auditory verbal learning 1–5 | 38.28 (7.49) | 46.34 (8.97) | −3.72‡ |
| Delayed recall | 8.75 (2.67) | 10.17 (2.74) | −2.41* |
| Recognition | 13.44 (2.81) | 14.24 (1.27) | −2.09* |
| Visual memory | |||
| Immediate recall | 13.52 (8.17) | 21.14 (9.51) | −3.27† |
| Delayed recall | 11.51 (7.29) | 19.48 (8.81) | −3.76† |
| Attention | |||
| Verbal (DSF) | 9.39 (3.16) | 10.24 (3.24) | −1.01 |
| Visual (CTT 1) | 40.17 (22.78) | 42.18 (25.37) | −0.32 |
| Executive function | |||
| Verbal | |||
| Letter fluency test | 17.68 (9.62) | 32.21 (10.21) | −5.51‡ |
| Supermarket | 10.25 (4.38) | 15.14 (5.38) | −3.76‡ |
| Animal | 12.46 (4.47) | 15.03 (4.66) | −2.13* |
| Digit span backward | 5.07 (2.88) | 6.90 (2.59) | −2.52* |
| Visual | |||
| Color trails test 2 | 76.79 (45.83) | 68.25 (41.06) | −2.08* |
| Visuospatial function | |||
| Rey complex figure copy | 23.97 (10.31) | 30.12 (8.72) | −2.41* |
| Motor function | |||
| Simple motor | |||
| Dominant hand | 18.49 (8.54) | 30.57 (12.25) | −3.29† |
| Nondominant hand | 16.42 (8.79) | 27.72 (15.94) | −2.86† |
| Fine motor | |||
| Dominant hand | 94.57 (47.99) | 115.11 (39.82) | −1.33 |
| Nondominant hand | 108.50 (32.58) | 118.10 (47.23) | −0.51 |
SD = standard deviation, FSIQ = full scale intelligence quotient, VIQ = verbal intelligence quotient, PIQ = performance intelligence quotient, DSF = digit span forward, CTT 1 = color trails test 1.
*P < 0.05; †P < 0.01; ‡P < 0.001.