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Table 3 Correlation with heart-to-background activity ratio

From: Short-duration, submaximal intensity exercise stress combined with adenosine triphosphate decreases artifacts in myocardial perfusion single-photon emission computed tomography

  Univariate Multivariate
r Value p Value p Value Coefficient (95% CI)
log (H/L ratio)
Age 0.030 0.752 0.603 0.0006 (− 0.0018 ~ 0.0032)
Male 0.196 0.040 0.020 0.0591 (0.0093 ~ 0.1089)
delta RPP 0.283 0.002 0.001 0.0001 (0.0001 ~ 0.0001)
log (H/below the H ratio)
Age 0.027 0.773 0.686 −0.0003 (− 0.0023 ~ 0.0015)
Male 0.126 0.188 0.001 0.0677 (0.0275 ~ 0.1079)
delta RPP 0.263 0.005 0.005 0.0001 (0.0001 ~ 0.0001)
EDVex 0.289 0.002 < 0.001 −0.0019 (− 0.0028 ~ − 0.0010)
  1. CI Confidence interval, H/L heart-to-liver activity ratio, H/below the H heart-to-below the heart, RPP rate pressure product, EDVex end-diastolic volume after exercise