Table 1.
Sample Characteristics for overall sample and by MBI status
| Overall N=442 | MBI- N=388 | MBI + N=54 | |
|---|---|---|---|
|
|
|||
| Age, mean (SD) | 74.79 (7.63) | 74.69 (7.47) | 75.48 (8.77) |
| Female sex, n (%) | 225 (50.90) | 202 (52.06) | 23 (42.59) |
| Diagnosis, n (%) | |||
| Cognitively Normal | 283 (64.32) | 271 (70.21) | 12 (22.22) |
| MCI | 157 (35.68) | 115 (29.79) | 42 (77.78) |
| Education years, median (Q1-Q3) | 16 (15–18) | 16.50 (15–18) | 16 (14–18.75) |
| Braak I SUVR, mean (SD) | 1.88 (0.60) | 1.84 (0.57) | 2.15 (0.69) |
| Braak III SUVR, mean (SD) | 1.41 (0.28) | 1.40 (0.27) | 1.53 (0.32) |
| Braak I SUVR, median (Q1-Q3) | 1.70 (1.52–2.03) | 1.69 (1.51–1.98) | 1.97 (1.57–2.58) |
| Braak III SUVR, median (Q1-Q3) | 1.33 (1.26–1.47) | 1.33 (1.26–1.46) | 1.45 (1.31–1.70) |
| AV45 SUVR, mean (SD) | 1.16 (0.22) | 1.15 (0.21) | 1.20 (0.24) |
| AV45 SUVR binary, n (%) | 189 (42.76) | 157 (40.46) | 32 (59.26) |
Abbreviations: SD=standard deviation; MBI=mild behavioral impairment; MCI=mild cognitive impairment; SUVR, standardized uptake value ratio.
Q1=the first quartile; Q3= the third quartile; there were 2 participants missing cognitive diagnosis.