TABLE 3.
Participant characteristics at each assessment (years since baseline)
| Years since baseline | ||||||
|---|---|---|---|---|---|---|
| 0 (n = 485) | 1 (n = 388) | 2 (n = 393) | 3 (n = 361) | 5 (n = 308) | 7 (n = 149a) | |
| Age (years) | ||||||
| Mean (SD) | 60.3 (6.8) | 61.7 (6.8) | 62.7 (6.6) | 63.5 (6.7) | 65.2 (6.6) | 68.4 (6.5) |
| Age group | ||||||
| 50‐59 years | 233 (48.0%) | 157 (40.5%) | 135 (34.4%) | 117 (32.4%) | 77 (25.0%) | 20 (13.4%) |
| 60‐69 years | 205 (42.3%) | 179 (46.1%) | 195 (49.6%) | 170 (47.1%) | 144 (46.8%) | 55 (36.9%) |
| 70‐79 years | 47 (9.7%) | 52 (13.4%) | 61 (15.5%) | 72 (19.9%) | 81 (26.3%) | 69 (46.3%) |
| 80+ years | 0 (0%) | 0 (0%) | 2 (0.5%) | 2 (0.6%) | 6 (1.9%) | 5 (3.4%) |
| Gender | ||||||
| Female | 335 (69.1%) | 262 (67.5%) | 265 (67.4%) | 243 (67.3%) | 208 (67.5%) | 108 (72.5%) |
| Male | 150 (30.9%) | 126 (32.5%) | 128 (32.6%) | 118 (32.7%) | 100 (32.5%) | 41 (27.5%) |
| Group | ||||||
| Comparison | 102 (21.0%) | 82 (21.1%) | 85 (21.6%) | 76 (21.1%) | 63 (20.5%) | 40 (26.8%) |
| Intervention | 383 (79.0%) | 306 (78.9%) | 308 (78.4%) | 285 (78.9%) | 245 (79.5%) | 109 (73.2%) |
| Prior cognitive reserve (z) | ||||||
| Mean (SD) | –0.003 (0.977) | 0.019 (0.978) | 0.055 (0.961) | 0.017 (0.952) | –0.034 (0.949) | 0.093 (0.826) |
a
Assessments completed at time of analysis.