Microbleeds by location and white matter microstructure integritya
FA | MD | Axial Diffusivity | Radial Diffusivity | |||||
---|---|---|---|---|---|---|---|---|
β | P | β | P | β | P | β | P | |
None vs lobar | ||||||||
Model 1 | −0.396 (−0.622 to −0.169) | .001 | 0.339 (0.135−0.543) | .001 | 0.270 (0.055−0.484) | .014 | 0.363 (0.159−0.566) | <.001 |
Model 2 | −0.396 (−0.619 to −0.173) | .001 | 0.340 (0.138−0.541) | .001 | 0.270 (0.058−0.485) | .013 | 0.362 (0.162−0.563) | <.001 |
Model 3 | −0.258 (−0.467 to −0.048) | .016 | 0.191 (0.010−0.372) | .038 | 0.131 (−0.065−0.327) | .191 | 0.215 (0.034−0.395) | .020 |
Model 4 | −0.264 (−0.472 to −0.056) | .013 | 0.195 (0.014−0.376) | .034 | 0.134 (−0.062−0.330) | .180 | 0.218 (0.039−0.398) | .017 |
None vs deep | ||||||||
Model 1 | −0.509 (−0.726 to −0.293) | <.001 | 0.530 (0.335−0.725) | <.001 | 0.486 (0.283−0.689) | <.001 | 0.534 (0.339−0.729) | <.001 |
Model 2 | −0.481 (−0.697 to −0.266) | .001 | 0.512 (0.317−0.706) | <.001 | 0.472 (0.268−0.675) | <.001 | 0.514 (0.319−0.708) | <.001 |
Model 3 | −0.244 (−0.450 to −0.038) | .020 | 0.243 (0.065−0.421) | .008 | 0.218 (0.028−0.408) | .025 | 0.246 (0.068−0.424) | .007 |
Model 4 | −0.242 (−0.448 to −0.036) | .021 | 0.245 (0.071−0.424) | .007 | 0.220 (0.029−0.411) | .024 | 0.248 (0.069−0.426) | .007 |
Note:—β indicates regression coefficient.
↵a Values represent differences in z scores of mean FA, MD, axial diffusivity and radial diffusivity of NAWM for the presence of any microbleeds by their location compared with no microbleeds. Model 1: adjusted for age and sex; model 2: same as model 1, additionally adjusted for hypertension, hyperlipidemia, smoking, diabetes; model 3: adjusted for age, sex, lacunes, white matter hyperintensity volume (log-transformed); model 4: adjusted for sex, cardiovascular risk factors as in model 2, and CSVD imaging markers as in model 3.