Table 1.
Participant characteristics
| Variable | Units | Wave 2 (age 73 y) |
Wave 3 (age 76 y) |
||
|---|---|---|---|---|---|
| Mean (SD) | N | Mean (SD) | N | ||
| Sex | M:F | 395:381 | 776 | 314:305 | 619 |
| Age S100β | Years | 72.493 (0.716) | 776 | 76.243 (0.679) | 619 |
| S100β | μg/L | 0.085 (0.035) | 776 | 0.092 (0.040) | 619 |
| MMSE | /30 | 28.815 (1.285) | 775 | 28.838 (1.291) | 619 |
| WMH | cm3 | 8.060 (11.376)a | 592 | 10.998 (15.542)a | 413 |
| Total Brain | cm3 | 991.176 (90.522) | 593 | 976.179 (91.483) | 414 |
| GM | cm3 | 472.862 (44.860) | 593 | 466.321 (43.753) | 411 |
Descriptive MRI data are provided for those that gave S100β at the same wave.
Key: GM, gray matter volume; MMSE, Mini-Mental State Examination; WMH, white matter hyperintensity volume (untransformed).
a
Median and IQR provided for raw (untransformed) volumes.