Study sample characteristics in the LIFE study at the Pittsburgh site
MRI Study (n = 53) | Non-MRI Study (n = 163) | P Value | |
---|---|---|---|
Age (median) (IQR) (yr) | 76.0 (5.8) | 79.4 (9.0) | <.01a |
Race, non-Hispanic white (No.) (%) | 30 (56.6) | 124 (76.1) | <.01a |
Sex, female (No.) (%) | 42 (79.2) | 123 (75.5) | .57 |
APOE4 allele presenceb (No.) (%) | 15 (31.9) | 27 (20.0) | .10 |
VEGF (median) (IQR) (pg/mL) | 414.61 (370.17) | – | |
BDNF (median) (IQR) (pg/mL) | 19,780.30 (27,492.00) | – | |
Pulse pressure (median) (IQR) | 53 (13) | 57 (18) | .06 |
Physical activity—daily moderate activity (median) (IQR) (min) | 24.6 (31.6) | 18.3 (22.7) | .05 |
3MS (median) (IQR) | 93 (7) | 92 (9) | .46 |
Severe WMH burdenc (No.) (%) | 11 (20.8) | – | |
No microbleedsd (No.) (%) | 21 (39.6) | – | |
Confounders | |||
On antihypertensive medication (No.) (%) | 39 (73.6) | 119 (73.0) | .93 |
Hemoglobin levele (median) (IQR) (g/dL) | 12.7 (1.2) | 13.2 (2.0) | .22 |