Table 1. Patient data.
| Control group(n = 39) | Dil group(n = 40) | P value | |
| Age (years) | 50.5±7.8 | 53.7±7.4 | 0.07 |
| Gender (male%) | 29/39 (74.4%) | 30/40(75%) | 1 |
| Risk factors | |||
| Hypertension | 18/39 (46.2%) | 23/40(57.5%) | 0.371 |
| Diabetes | 13/39 (33.3%) | 13/40(32.5%) | 1 |
| Hyperlipidemia | 26/39 (66.7%) | 24/40(60%) | 0.642 |
| History | 23/39 (59.0%) | 24/40(60%) | 1 |
| Smoking (>10/day) | 19/39 (48.7%) | 23/40(57.5%) | 0.502 |
| Body Mass Index (kg/m2) | 25.0±1.2 | 25.0±1.1 | 0.992 |
| ETPR | 23/39 (59.0%) | 22/40 (55%) | 0.821 |
| CSFBV(single/double sticks) | |||
| LAD | 23/47 (48.9%) | 25/50 (50%) | 1 |
| LCX | 11/47 (23.4%) | 10/50 (20%) | 0.806 |
| RCA | 13/47 (27.7%) | 15/50 (30%) | 0.826 |
| CTFC (frames) | 55.8±8.9 | 54.1±8.9 | 0.273 |
| Ejection fraction (%) | 60. 5±5. 6 | 58.6±5.1 | 0.136 |
| Chest pain (times/week) | 1.9±1.1 | 1.8±1.2 | 0.569 |
| Medication | |||
| ACEI/ARB | 18/39 (46.2% | 23/40 (57.5%) | 0.371 |
| Antidiabetic agents | 13/39 (33.3%) | 12/40 (30%) | 0.812 |
| Lipid-lowering agents | 25/39 (64.1%) | 21/40 (52.5%) | 0.364 |
| Beta-adrenoblockers | 21/39 (53.8%) | 20/40 (50%) | 0.823 |
| Nitrates | 32/39 (82.1%) | 34/40 (85%) | 0.770 |
LAD, Left anterior descending; LCX, Left circumflex artery; RCA, right coronary artery; ETPR, exercise test positive rate; CSFBV, coronary slow flow blood vessel; CTFC, corrected TIMI frame count; ACEI, Angiotensin converting enzyme inhibitor; ARB, Angiotensin-II receptor typy-1 blocker. Unpaired Student’s t test or Mann-Whitney-Test was used to compare differences in means or mean ranks of variables between control group and Dil group.