Table 2.
Characteristics of coronary artery plaque detected by CCTA in DM patients with and without a smoking history.
| Characteristics | All patients (n = 1058) | Nonsmoker (n = 610) | Smoker (n = 448) | P-value |
|---|---|---|---|---|
| Number of plaques | 4870 | 2741 | 2129 | |
| Plaque burden | ||||
| Calcified plaque | 2.2 ± 2.4 | 2.4 ± 2.4 | 2.0 ± 2.3 | 0.010 |
| Mixed plaque | 1.9 ± 2.3 | 1.7 ± 2.1 | 2.2 ± 2.5 | 0.007 |
| Noncalcified plaque | 0.5 ± 0.9 | 0.4 ± 0.9 | 0.6 ± 1.0 | 0.001 |
| Nonobstructive plaque | 2.8 ± 2.2 | 3.0 ± 2.2 | 2.6 ± 2.1 | 0.018 |
| Obstructive plaque | 1.8 ± 2.6 | 1.5 ± 2.5 | 2.1 ± 2.7 | <0.001 |
| Diseased vessels | 2.6 ± 1.0 | 2.6 ± 1.1 | 2.6 ± 1.0 | 0.234 |
| SIS | 4.6 ± 2.9 | 4.5 ± 3.0 | 4.8 ± 2.9 | 0.069 |
| SSS | 10.3 ± 9.4 | 9.7 ± 9.1 | 11.1 ± 9.7 | 0.005 |
| Plaque type | ||||
| Calcified plaque | 2361 (48.5%) | 1447 (52.8%) | 914 (42.9%) | <0.001 |
| Mixed plaque | 2027 (41.6%) | 1059 (38.6%) | 968 (45.5%) | <0.001 |
| Noncalcified plaque | 482 (9.9%) | 235 (8.6%) | 247 (11.6%) | <0.001 |
| Stenosis of coronary artery | <0.001 | |||
| Nonobstructive stenosis | 2974 (61.1%) | 1799 (65.6%) | 1175 (55.2%) | |
| Obstructive stenosis | 1896 (38.9%) | 942 (34.4%) | 954 (44.8%) | |
| Number of single/multiple vessel disease | 0.275 | |||
| Single | 198 (18.7%) | 121 (19.8%) | 77 (17.2%) | |
| Multiple | 860 (81.3%) | 489 (80.2%) | 371 (82.8%) |
DM, diabetes mellitus; SIS, segment involvement score; SSS, segment stenosis score. Data are expressed as means ± SD or numbers (%).