Table 1 Baseline characteristics of the study sample
|  | n (%) | Range (mean ± SD) |
|---|---|---|
Group A | 155 | Â |
 Age |  | 65–90 (85.1 SD 6.42) ys |
 Gender | M 51–F 104 |  |
 31.A1 | 28 (18.1%) |  |
 31.A2 | 127 (81.9%) |  |
Group B | 168 | Â |
 Age |  | 66–90 (85.7 SD 5.48) ys |
 Gender | M 55–F 113 |  |
 31.A1 | 27 (16.1%) |  |
 31.A2 | 141 (83.9%) |  |