Table 2.
Baseline Cognitive and Functional Measures and Their Severity Distributions Among the ADMDC Probable AD Cohort, Houston, Texas, 1990 to 2011 (N = 1091).
| Mean (SD) | Range | Mild n (%) | Moderate, n (%) | Severe, n (%) | |
|---|---|---|---|---|---|
| MMSE (n = 1091) | 19.8 (6.6) | 0-30 | 651 (59.7) | 339 (31.1) | 101 (9.2) |
| CDR-SB (n = 1023) | 6.5 (4.1) | 0.5-18 | 809 (79.1) | 168 (16.4) | 46 (4.5) |
| ADAS-Cog (n = 884) | 23.6 (12.5) | 0-68 | 232 (26.2) | 647 (73.2) | 5 (6) |
Abbreviations: AD, Alzheimer’s disease; ADAS-Cog, Alzheimer’s Disease Assessment Scale–Cognitive; ADMDC, Alzheimer’s Disease and Memory Disorders Center; CDR-SB, Clinical Dementia Rating Scale–Sum of Boxes; MMSE: Mini-Mental State Examination; SD, standard deviation.