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Table 7 Clinical impact of measurement errors of calibrated SpHb

From: Meta-analytic estimation of measurement variability and assessment of its impact on decision-making: the case of perioperative haemoglobin concentration monitoring

Index Threshold Mean SD 2.5 % 25 % 50 % 75 % 97.5 %
Se 6 0.801 0.177 0.330 0.712 0.845 0.938 1.000
Se 7 0.858 0.135 0.503 0.795 0.894 0.958 1.000
Se 8 0.892 0.105 0.622 0.845 0.920 0.969 1.000
Se 9 0.913 0.085 0.696 0.876 0.936 0.975 1.000
Se 10 0.928 0.071 0.746 0.896 0.947 0.979 1.000
Sp 6 0.895 0.089 0.666 0.854 0.914 0.958 0.999
Sp 7 0.874 0.106 0.600 0.824 0.897 0.950 0.998
Sp 8 0.843 0.129 0.504 0.781 0.872 0.937 0.998
Sp 9 0.795 0.164 0.369 0.713 0.831 0.916 0.997
Sp 10 0.717 0.208 0.192 0.599 0.754 0.876 0.996
PPV 6 0.760 0.128 0.495 0.672 0.764 0.853 0.989
PPV 7 0.828 0.104 0.598 0.760 0.837 0.907 0.995
PPV 8 0.866 0.086 0.667 0.812 0.876 0.931 0.997
PPV 9 0.892 0.071 0.724 0.847 0.900 0.946 0.998
PPV 10 0.914 0.055 0.788 0.878 0.920 0.956 0.998
NPV 6 0.937 0.049 0.817 0.906 0.946 0.977 1.000
NPV 7 0.921 0.063 0.769 0.884 0.934 0.971 1.000
NPV 8 0.901 0.077 0.721 0.855 0.916 0.963 1.000
NPV 9 0.871 0.094 0.656 0.812 0.886 0.947 0.999
NPV 10 0.812 0.121 0.554 0.731 0.822 0.909 0.998
Acc 6 0.871 0.052 0.745 0.849 0.880 0.904 0.944
Acc 7 0.868 0.054 0.736 0.843 0.878 0.903 0.944
Acc 8 0.868 0.054 0.733 0.843 0.878 0.903 0.944
Acc 9 0.869 0.051 0.739 0.844 0.878 0.903 0.944
Acc 10 0.875 0.044 0.774 0.853 0.881 0.904 0.944
Err 6 0.129 0.052 0.056 0.096 0.120 0.151 0.255
Err 7 0.132 0.054 0.056 0.097 0.122 0.157 0.264
Err 8 0.132 0.054 0.056 0.097 0.122 0.157 0.267
Err 9 0.131 0.051 0.056 0.097 0.122 0.156 0.261
Err 10 0.125 0.044 0.056 0.096 0.119 0.147 0.226
  1. Threshold in g/dL; Se: sensitivity, Sp: specificity, PPV: positive predictive value, NPV: negative predictive value, Acc: accuracy, Err: probability of decisional error