Fig. 4

Receiver operating characteristic curve shows the sensitivity and specificity of IDCR measurements in 25 hemodialysis outpatients in Study 2 associated with or without volume overload as assessed clinically by their long-term nephrologist as the gold standard. The number of observations (obs) of each IDCR value of the 25 total observations is as shown. Area under the curve is shown with its 95% confidence interval