Table 4.
Mean age, SD and minimum and maximum ages of AD and control cases in the three participating cohorts
| Cohort | N | Mean | SD | Min | Max |
|---|---|---|---|---|---|
| Oxford - AD | 20 | 80.9 | 6.8 | 66 | 91 |
| Oxford - control | 5 | 83.2 | 7.3 | 77 | 92 |
| Oxford - total | 25 | 81.4 | 6.8 | 66 | 92 |
| CFAS - AD | 11 | 89.5 | 6.4 | 79 | 102 |
| CFAS - control | 4 | 83.0 | 6.3 | 76 | 91 |
| CFAS - total | 15 | 87.7 | 6.8 | 76 | 102 |
| Bristol - AD | 20 | 78.2 | 10.2 | 60 | 95 |
| Bristol - control | 5 | 87.6 | 5.6 | 80 | 94 |
| Bristol - total | 25 | 80.0 | 10.1 | 60 | 95 |
| Total - AD | 51 | 81.7 | 9.1 | 60 | 102 |
| Total - control | 14 | 84.7 | 6.32 | 76 | 94 |
| Total | 65 | 82.3 | 8.7 | 60 | 102 |