Table 3.
Comparisons of intelligence and memory by age group.
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| AGE GROUP | INTELLIGENCE EXAMINATION (%) | DEMENTIA | TOTAL LOWER INTELLIGENCE (%) | LOWER MEMORY | ||
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| IQ < 70 | VIQ < 70 | PIQ < 70 | MQ < 70(%) | |||
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| 2–14 years | N = 45 | N = 45 | N = 45 | N = 5 | N = 50 | N = 42 |
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| JE group | 1(2.2) | 0(0.0) | 1(2.2) | 4(80.0) | 5(10.0) | 19(45.2) |
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| Healthy group | 0(0.0) | 0(0.0) | 0(0.0) | 0(0.0) | 0(0.0) | 2(4.8) |
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| McNemar or Corrected χ2 | 0.0 | N/A | 0.0 | 2.3 | 3.2 | 15.1 |
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| P value | 1.00 | N/A | 1.00 | 0.13 | 0.06 | 0.00 |
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| ≥15 years | N = 29 | N = 29 | N = 29 | N = 6 | N = 35 | N = 29 |
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| JE group | 7(24.1) | 7(24.1) | 8(27.6) | 6(100.0) | 13(37.1) | 21(72.4) |
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| Healthy group | 1(3.4) | 1(3.4) | 1(3.4) | 0(0.0) | 1(2.9) | 7(24.1) |
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| McNemar or Corrected χ2 | 4.2 | 4.2 | 5.1 | 4.2 | 10.1 | 10.6 |
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| P value | 0.03 | 0.03 | 0.02 | 0.03 | 0.00 | 0.00 |
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| Total | N = 74 | N = 74 | N = 74 | N = 11 | N = 85 | N = 71 |
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| JE group | 8(10.8) | 7(9.5) | 9(12.2) | 10(90.9) | 18(21.2) | 40(56.3) |
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| Healthy group | 1(1.4) | 1(1.4) | 1(1.4) | 0(0.0) | 1(1.2) | 9(12.7) |
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| McNemar or Corrected χ2 | 5.1 | 4.2 | 6.1 | 8.1 | 15.1 | 27.3 |
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| P value | 0.02 | 0.03 | 0.01 | 0.00 | 0.00 | 0.00 |
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