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Table 5 Intra-class correlation analysis between PSID and echo standard measurement

From: Early markers of right heart involvement in regular smokers by Pocket Size Imaging Device

Variable Intra-class Correlation (rho) 95 % Confidence Interval
Lower bound Upper bound
IVC diameter (cm) 0.894 0.860 0.919
IVC percent variation 0.932 0.910 0.949
RA diameter (cm) 0.806 0.745 0.853
RV basal diameter (cm) 0.472 0.304 0.599