Table 1.
Numbers and Percentage (in Brackets) of Individuals and the States Used in the Analysis
| Interview and Time in Years From Baseline Screen | Severe/Moderate Impairment | Mild Impairment | No Impairment | Total With MMSE Measured | Death (Cumulative)* | Missing MMSE | Not Interviewed | |
| Baseline screen | 0 | 1,742 (14) | 3,087 (24) | 7,978 (62) | 12,807 | 0 | 73 | 0 |
| Baseline assessment | 0.25 | 1,053 (40) | 719 (28) | 834 (32) | 2,606 | 147 (1) | 29 | 10,098 |
| First assessment | 1 | 365 (40) | 221 (24) | 322 (35) | 908 | 655 (5) | 12 | 11,305 |
| Second follow-up | 2 | 1,233 (14) | 1,975 (23) | 5,550 (63) | 8,758 | 1,497 (12) | 63 | 2,562 |
| Second assessment | 2.25 | 430 (31) | 408 (29) | 570 (40) | 1,408 | 1,582 (12) | 54 | 9,836 |
| Third assessment | 3 | 164 (28) | 172 (29) | 248 (42) | 584 | 2,105 (16) | 5 | 10,186 |
| Fourth assessment | 6 | 560 (23) | 618 (25) | 1255 (52) | 2,433 | 4,092 (32) | 27 | 6,328 |
| Fifth assessment | 8 | 99 (26) | 101 (26) | 185 (48) | 385 | 5,565 (43) | 5 | 6,925 |
| Sixth assessment | 10 | 497 (16) | 682 (21) | 2,014 (63) | 3,193 | 6,796 (53) | 18 | 2,873 |
| Status at December 31, 2005 | Dead | 8,432 (65) | Censored (alive) | 4,448 (35) | ||||
Notes: MMSE = Mini-Mental State Examination.
*
In the table, deaths are coded approximately to the interview stage, in the analysis exact date of death has been used. A total of 124 individuals with no known cognitive state are excluded from the entire table.