Patient group | Whole cycle SSS ± SD | Systolic SSS ± SD | P | ΔSSS |
No CAD (n = 335) | 3.0 ± 2.6 | 2.0 ± 2.3 | <0.001 | −1 ± 1.2* |
CAD (n = 268) | 9.2 ± 7.4 | 9.1 ± 7.6 | 0.559 | −0.1 ± 1.3* |
Values are mean ± SD. ΔSSS = difference between SSS and systolic SSS, normal study = SSS < 4 and SDS < 2, *P < 0.001, P < 0.05 = statistically significant.