Table 3.
Relationship between racial group and intracranial arterial flow
| Interaction of risk factor x racial group | Main effect of racial group after interaction term removed from models | |||
|---|---|---|---|---|
| Model | Risk Factor | N | Beta (SE) | Beta (SE) |
| 1 | ASCVD 10-year risk score | 379 | 0.005 (0.006) | −0.289 (0.080)* |
| 2 | Systolic blood pressure | 381 | −0.001 (0.004) | −0.305 (0.081)* |
| 3 | Diastolic blood pressure | 381 | 0.000 (0.008) | −0.281 (0.081)* |
| 4 | Waist circumference | 381 | −0.006 (0.005) | −0.293 (0.079)* |
| 5 | Waist-to-Hip Ratio | 381 | −0.628 (0.900) | −0.3 (0.079)* |
| 6 | Body Mass Index | 381 | −0.015 (0.011) | −0.293 (0.080)* |
| 7 | LDL-c | 376 | 0.001 (0.002) | −0.287 (0.080)* |
| 8 | HDL-c | 379 | 0.001 (0.004) | −0.294 (0.079)* |
| 9 | Total cholesterol | 379 | 0.000 (0.002) | −0.295 (0.079)* |
| 10 | Triglycerides | 378 | −0.002 (0.001)* | −0.293 (0.079)* |
| 11 | Glucose | 277 | 0.002 (0.002) | −0.239 (0.096)* |
| 12 | Current or former smoker | 381 | −0.135 (0.143) | −0.319 (0.079)* |
| 13 | Tobacco exposure | 135 | 0.000 (0.003) | −0.51 (0.113)* |
Each linear mixed-effects regression model included fixed effects of age, sex, education, antihypertensive medication use, vessel (Left ICA, Right ICA, Left SICA, Right SICA, Left MCA, Right MCA, Basilar), head coil type (8-channel, 32- channel), and intercept random effects for person and vessel group (non-ICA or ICA).
ASCVD (atherosclerotic cardiovascular disease); LDL-c (low-density lipoprotein cholesterol); HDL-c (high-density lipoprotein cholesterol)
*
p<.05 non-FDR-adjusted