Table 3 Comparison of the five items among 4 groups (X̄±s)
Index (X̄±s) | NC | MCI | Mild AD | Moderate-severe AD | F (P) | Bonferroni correction | |
|---|---|---|---|---|---|---|---|
Low-level education (n = 131) | Verbal fluency | 11.1 ± 2.7 | 8.2 ± 2.5 | 6.3 ± 2.3 | 4.3 ± 1.7 | 21.743 (0.000) | a; b; c; d; e; f; |
Orientation | 6 ± 0 | 5.7 ± 0.5 | 3.7 ± 1.7 | 1.4 ± 0.8 | 36.481 (0.000) | b; c; d; e; f; | |
Visual perception | 5.9 ± 2.6 | 4.1 ± 2.4 | 2.6 ± 2.3 | 1.1 ± 1.3 | 12.022 (0.000) | b; c; d; e; | |
Immediate recall | 7.8 ± 1.7 | 6.8 ± 2.5 | 5.1 ± 2.4 | 2.6 ± 2.1 | 13.419 (0.000) | b; c; d; e; f; | |
Delayed recall | 9.4 ± 3.1 | 5.2 ± 3.4 | 1.9 ± 2.8 | 1 ± 1.9 | 28.411 (0.000) | a; b; c; d; e; | |
Middle-level education (n = 381) | Verbal fluency | 10.8 ± 2.2 | 9.5 ± 2.7 | 7.3 ± 2.5 | 4.2 ± 2.7 | 53.341 (0.000) | a; b; c; d; e; f; |
Orientation | 5.9 ± 0.2 | 5.7 ± 0.5 | 4.2 ± 1.3 | 2.2 ± 1.2 | 115.913 (0.000) | b; c; d; e; f; | |
Visual perception | 7.3 ± 1.6 | 6.3 ± 2.3 | 4.6 ± 2.5 | 2.3 ± 1.9 | 37.701 (0.000) | b; c; d; e; f; | |
Immediate recall | 8.1 ± 1.3 | 7.2 ± 1.8 | 6.1 ± 2.1 | 3.8 ± 2.5 | 34.823 (0.000) | b; c; d; e; f; | |
Delayed recall | 10.0 ± 2.5 | 6.5 ± 3.5 | 3.3 ± 3.1 | 1.6 ± 2.2 | 70.979 (0.000) | a; b; c; d; e; | |
High-level education (n = 877) | Verbal fluency | 11.3 ± 2.8 | 9.2 ± 2.5 | 6.9 ± 2.4 | 5.4 ± 2.3 | 167.674 (0.000) | a; b; c; d; e; f; |
Orientation | 5.9 ± 0.3 | 5.7 ± 0.5 | 4.2 ± 1.4 | 2.8 ± 1.3 | 347.124 (0.000) | b; c; d; e; f; | |
Visual perception | 7.5 ± 1.9 | 6.2 ± 2.3 | 4.1 ± 2.6 | 2.9 ± 2.7 | 130.8 (0.000) | a; b; c; d; e; f; | |
Immediate recall | 8.4 ± 1.4 | 7.4 ± 1.7 | 6.1 ± 2.2 | 5.1 ± 2.2 | 96.481 (0.000) | a; b; c; d; e; f; | |
Delayed recall | 10.2 ± 3.4 | 5.5 ± 3.7 | 2.3 ± 3.1 | 1.1 ± 1.8 | 284.412 (0.000) | a; b; c; d; e; |