Table 1.
Background Characteristics on Included Participants and Nonparticipants
| Participants (n=963) | Nonparticipants (n=1196) | P Value | |
|---|---|---|---|
| Age, y, mean (SD) | 62.1 (9.7) | 62.7 (10.8) | 0.19 |
| Body mass index, kg/m2, mean (SD) | 27.3 (5.4) | 27.4 (6.0) | 0.71 |
| Hypertension, n (%) | 487 (51) | 598 (59) | 0.001 |
| Hyperlipidemia, n (%) | 604 (63) | 672 (66) | 0.16 |
| Diabetes mellitus, n (%) | 127 (13) | 177 (17) | 0.02 |
| Family history of CAD, n (%) | 496 (53) | 501 (51) | 0.34 |
| Smoking (current), n (%) | 152 (16) | 231 (22) | <0.001 |
| Stable angina pectoris, n (%) | 693 (72) | 918 (77) | 0.01 |
| Atherosclerosis at CAG, n (%) | 335 (35) | 513 (43) | <0.001 |
| Resident outside the capital region, n (%) | 293 (30) | 366 (31) | 0.93 |
P value from 1‐way ANOVA or χ2 test. CAD indicates coronary artery disease; CAG, coronary angiography.