Table 1 compares the measured values of sensitivity obtained using the differential sensor design with predicted maximum values of sensitivity obtained from the model results in Figure 3.
The differentially measured values of sensitivity are in excellent agreement with the predicted maximum values of sensitivity for all pH values.
Satisfactory values of sensitivity (82%%) and specificity (70%%) were obtained with ARRCO.
High values of sensitivity, specificity, and MCC indicate the robustness of the proposed models.
All sensing measurements were performed at the same sensor biasing point so that values of sensitivity could be quantitatively compared.
The values of sensitivity are approximately 34 and 55 mV/pH after initial and 24 months, respectively.
In this regard, the values of sensitivity, LOD and LOQ showed an improvement compared to univariate techniques.
However, values of sensitivity and specificity and negative predictive values for the suggested threshold of rapid shallow breathing index <105 were highly variable in different studies [4 6].
Hence, the closer the actual values of sensitivity and specificity are to 1 the closer the actual clustering approaches the ideal one.
The role of serum lactate in predicting bowel ischemia was modest; it was far below the higher values of sensitivity found by several studies [12, 15].
With BRASS quantification, there were no significant differences between the values of sensitivity (67.4 83.7%) or specificity (79.4 91.2%) across all reconstruction and calibration strategies.
