Table 3. The finding of CCTA and CACS in current smoker with lower pack-years group and higher pack-years group .
| Variables | Current smoker with lower pack-year (n = 454, ≤ 20 pack-years) | Current smoker with higher pack-year (n = 397, > 20 pack-years) | p value |
| Any plaque | 277 (61.0) | 313 (78.8) | < 0.001 |
| ≥ 2/lM vessels disease | 191 (42.1) | 219 (55.2) | < 0.001 |
| Significant stenosis | 142 (31.3) | 183 (46.1) | < 0.001 |
| CACS ≥ 10 | 154 (33.9) | 197 (49.6) | < 0.001 |
| The number of all plaques | 1471 | 1761 | |
| Average numbers of plaques | 3.24 ± 3.09 | 4.44 ± 4.21 | 0.071 |
| Average number and relative percentage of plaques | 0.024 | ||
| Calcified plaque | 569 (38.7) | 610 (34.6) | |
| Non-calcified plaque | 440 (29.9) | 596 (33.8) | |
| Mixed plaque | 462 (31.4) | 555 (31.5) |
Values are mean ± Standard deviation or n (%).
Abbreviations are in Table 2.