Table A1.
Changes in cognition over time
| Mean | SD | Pct | |
|---|---|---|---|
| Normal to Normal | −0.224 | 3.243 | 69.56 |
| Normal to CIND | −5.008 | 2.747 | 8.27 |
| Normal to Dementia | −10.566 | 3.927 | 1.01 |
| CIND to Normal | 4.670 | 2.602 | 6.01 |
| CIND to CIND | −0.136 | 1.783 | 6.85 |
| CIND to Dementia | −4.327 | 2.124 | 2.23 |
| Dementia to Normal | 8.864 | 2.668 | 0.37 |
| Dementia to CIND | 3.697 | 1.842 | 1.29 |
| Dementia to Dementia | −0.209 | 1.440 | 4.41 |
| Total | −0.431 | 3.772 | 100.00 |
| N | 103426 |
All HRS respondents included, regardless of coupleness status, to validate that cognition tends to decline with age for all individuals.