Comparison of asymptomatic and symptomatic stenosis groupsa
| Characteristics | Symptomatic Stenosis (n = 21) | Asymptomatic Stenosis (n = 15) | P Valueb |
|---|---|---|---|
| Age (yr) | 69.7 ± 11.9 | 67.3 ± 12.9 | .58 |
| Sex, male | 10 | 7 | 1.00 |
| Risk factor | |||
| HTN | 13 (62%) | 12 (80%) | .29 |
| DM | 8 (38%) | 8 (53%) | .49 |
| Dyslipidemia | 12 (57%) | 11 (73%) | .48 |
| Current smoking | 8 (38%) | 4 (27%) | .72 |
| Obesity | 11 (52%) | 5 (33%) | .32 |
| CHD | 2 (10%) | 2 (13%) | 1.00 |
| MCA stenosis | |||
| Site | 12 right, 9 left | 4 right, 11 left | .09 |
| Degreec | 11 moderate, 10 severe | 13 moderate, 2 severe | <.05 |
| CR (%) | 63.64 ± 10.56 | 54.09 ± 13.49 | <.05 |
Note:—CHD indicates coronary heart disease; DM, diabetes mellitus; HTN, hypertension.
↵a Values are presented as numbers (%). Age and CR are presented as means.
↵b P values were calculated by the t test and Fisher exact test.
↵c The degree of stenosis was the only independent variable that survived multivariate logistic regression analysis (odds ratio = 7.15; 95% CI, 1.28–39.83; P = .025).