Table 9.
Mean values of each variable for the different clinical groups.
| Variable | HC | MCI | AD | HC convert to MCI/AD | MCI convert to AD | ||||
|---|---|---|---|---|---|---|---|---|---|
|
Non_ Converters |
Converters |
Pvalue (t,chisq) |
Non_ converters |
Converters | Pvalue | ||||
| v1 | 28.84 | 26.20 | 19.10 | 28.96 | 28.23 | <0.001 | 27.37 | 25.79 | 0.002 |
| v2 | 12.90 | 6.51 | 3.24 | 13.24 | 9.84 | <0.001 | 7.53 | 5.91 | 0.034 |
| v3 | 11.38 | 3.79 | 1.02 | 11.80 | 7.10 | <0.001 | 5.03 | 3.04 | 0.012 |
| v4 | 0.92 | 0.31 | 0.09 | 0.07 | 0.27 | <0.001 | 0.60 | 0.70 | 0.498 |
| v5 | 60.55 | 38.30 | 26.56 | 61.35 | 51.23 | <0.001 | 41.07 | 35.40 | 0.001 |
| v6 | 0.87 | -1.37 | -2.21 | 0.95 | -0.03 | <0.001 | -1.18 | -1.81 | 0.001 |
| v7 | 0.79 | -1.62 | -2.53 | 0.89 | -0.05 | <0.001 | -1.38 | -2.02 | 0.002 |
| v8 | 0.09 | -1.16 | -1.90 | 0.12 | 0.21 | 0.269 | -0.98 | -1.22 | 0.247 |
| v9 | -0.21 | 1.16 | 2.14 | -0.26 | 0.58 | <0.001 | 0.72 | 1.65 | 0.001 |
| v10 | 0.46 | -1.21 | -2.06 | 0.52 | -0.10 | 0.000 | -0.70 | -1.52 | <0.001 |
| v11 | -0.54 | -1.49 | -3.23 | -0.49 | -0.84 | 0.052 | -1.42 | -1.61 | 0.364 |
| v12 | -1.01 | -0.78 | -0.49 | -1.00 | -1.00 | 0.481 | -0.76 | -0.76 | 0.488 |
| v13 | 0.48 | -0.82 | -1.92 | 0.50 | 0.06 | 0.019 | -0.52 | -1.13 | 0.015 |
| v14 | 0.53 | -1.02 | -2.15 | 0.56 | 0.06 | 0.016 | -0.58 | -1.39 | 0.010 |
| v15 | 0.31 | -1.15 | -2.91 | 0.33 | 0.34 | 0.490 | -0.36 | -1.88 | <0.001 |
| v16 | 12.04 | 10.04 | 7.32 | 12.17 | 11.06 | 0.066 | 9.23 | 9.57 | 0.338 |
| v17 | 12.38 | 9.03 | 5.31 | 12.50 | 11.87 | 0.120 | 9.23 | 8.83 | 0.305 |
| v18 | 12.13 | 8.25 | 4.46 | 12.33 | 9.71 | 0.000 | 8.87 | 7.57 | 0.054 |
| v19 | 12.15 | 8.60 | 4.89 | 12.34 | 9.87 | 0.001 | 9.33 | 7.59 | 0.015 |
| v20 | 0.74 | 0.18 | -1.12 | 0.78 | 0.72 | 0.329 | 0.44 | 0.03 | 0.047 |
| v21 | 0.72 | 0.27 | -0.82 | 0.76 | 0.66 | 0.260 | 0.50 | 0.27 | 0.206 |
| v22 | 12.00 | 11.11 | 9.10 | 12.11 | 12.06 | 0.465 | 10.73 | 11.09 | 0.285 |
| V23 | 11.68 | 9.85 | 6.53 | 11.76 | 10.65 | 0.019 | 10.13 | 9.33 | 0.131 |
| v24 | 108.33 | 105.92 | 100.84 | 108.46 | 107.32 | 0.227 | 103.47 | 107.53 | 0.072 |
| v25 | 111.62 | 108.91 | 104.22 | 111.82 | 110.32 | 0.132 | 106.60 | 110.32 | 0.072 |
| v26 | -0.05 | 0.48 | 2.10 | -0.03 | 0.08 | 0.280 | 0.63 | 0.38 | 0.237 |
| v27 | 0.02 | 0.08 | 0.28 | 0.03 | 0.06 | 0.277 | 0.26 | 0.04 | 0.145 |
| v28 | 0.06 | 0.94 | 4.57 | 0.02 | 0.64 | 0.035 | 0.90 | 1.09 | 0.362 |
| v29 | 0.08 | 0.17 | 0.64 | 0.07 | 0.23 | 0.147 | 0.19 | 0.29 | 0.254 |
| v30 | -0.34 | 0.35 | 1.83 | -0.36 | 0.13 | 0.004 | 0.31 | 0.39 | 0.424 |
| v31 | 0.73 | 1.55 | 3.08 | 0.67 | 1.06 | 0.105 | 1.00 | 1.76 | 0.074 |
| v32 | -0.32 | 0.05 | 0.57 | -0.34 | -0.02 | 0.046 | -0.10 | 0.02 | 0.299 |
| V33 | 9.75 | 9.31 | 7.22 | 9.79 | 9.90 | 0.083 | 9.60 | 9.33 | 0.117 |
| V34 | 43.12 | 40.48 | 36.32 | 43.31 | 41.84 | 0.111 | 38.40 | 41.79 | 0.076 |
| v35 | 0.04 | 1.21 | 5.74 | 0.03 | 0.15 | 0.025 | 0.73 | 1.37 | <0.001 |
| v36 | 2.62 | 3.71 | 4.06 | 2.56 | 3.07 | 0.116 | 3.90 | 3.24 | 0.148 |
| v37 | 4.33 | 4.94 | 4.98 | 4.28 | 4.20 | 0.428 | 4.97 | 4.52 | 0.238 |
Columns HC, MCI and AD are the mean values of each variable (cognitive test). The other columns are the means values for the groups of converters and non-converters from HC or from MCI with the t-test (chi-square test for variable 4, a dichotomous variable with values Pass and Fail) for the comparison between the 2 groups.