Table 1.
Differences of Demographic Data and Vascular Risk Factors Between Initially Enrolled Patients and Finally Eligible Patients, as Well as Between Finally Eligible Patients and Controls
| Variable | Initially Enrolled Patients (n=162) | Finally Eligible Patients (n=123) | P1 value | Controls (n=123) | P2 value |
|---|---|---|---|---|---|
| Gender (male/female) | 73/89 | 55/68 | 0.954 | 57/66 | 0.798 |
| Age (years) | 54.8±11.0 | 54.5±11.1 | 0.851 | 56.0±10.7 | 0.310 |
| Cigarette smoking | 29 (17.9%) | 25 (20.3%) | 0.605 | 19 (15.4%) | 0.318 |
| Alcohol consumption | 47 (29.0%) | 32 (26.0%) | 0.576 | 26 (21.1%) | 0.367 |
| Hypertension | 38 (23.5%) | 24 (19.5%) | 0.424 | 0 | <0.001 |
| Diabetes mellitus | 24 (14.8%) | 15 (12.2%) | 0.524 | 0 | <0.001 |
| Hyperlipidemia | 27 (16.7%) | 21 (17.1%) | 0.925 | 0 | <0.001 |
Notes: Quantitative data were reported as medians with upper and lower quartiles or the mean ± standard deviation as appropriate. Qualitative data were presented as counts (proportions). Intergroup comparisons of various variables were performed using the χ2 test or Fisher’s exact test for qualitative data, and Mann–Whitney U-test or t-test for quantitative data. P1 indicated the differences of various variables between initially enrolled patients and finally eligible patients. P2 indicated the differences of various variables between finally eligible patients and controls.