Baseline | Progression | |||||||
Former smoker | Never smoker | Difference | p value | Former smoker | Never smoker | Difference | P value | |
Women (N = 143) | ||||||||
Intima-medial thickness(μm) | 678.4 ± 13.4 | 672.9 ± 10.8 | 5.5 ± 16.2 | 0.74 | 10.0 ± 2.8 | 10.2 ± 2.1 | -0.2 ± 3.3 | 0.94 |
Echogenic layer (μm) | 314.6 ± 8.3 | 317.6 ± 6.8 | -3.0 ± 10.1 | 0.76 | 13.6 ± 3.3 | 7.0 ± 2.6 | 6.5 ± 4.0 | 0.10 |
Echolucent layer (μm) | 367.4 ± 14.6 | 361.3 ± 11.8 | 6.1 ± 17.7 | 0.73 | -3.5 ± 3.8 | 1.7 ± 2.9 | -5.2 ± 4.5 | 0.24 |
Men (N = 155) | ||||||||
Intima-medial thickness(μm) | 707.9 ± 9.7 | 677.2 ± 9.2 | 30.7 ± 13.3 | 0.02 | 11.6 ± 2.2 | 12.0 ± 2.0 | 0.4 ± 3.0 | 0.89 |
Echogenic layer (μm) | 341.8 ± 9.0 | 341.7 ± 8.6 | 0.08 ± 12.4 | 0.99 | 7.9 ± 3.5 | 6.8 ± 3.3 | 1.1 ± 4.8 | 0.82 |
Echolucent layer (μm) | 372.5 ± 10.6 | 344.8 ± 10.2 | 27.7 ± 14.7 | 0.06 | 1.1 ± 3.7 | 1.7 ± 3.5 | 0.60 ± 5.1 | 0.90 |