Table 1.

Statistical analyses of two ESR methods (ESR-MP and ESR-W) compared each other for the three groups of blood samples.

	Group 1	Group 2	Group 3
Number of samples	109	76	33
Sensitivity	0.80	0.82	0.77
Specificity	0.96	0.95	1.00
PPV	0.91	0.82	1.00
NPV	0.89	0.95	0.69
r	0.81	0.87	0.76
K	0.77	0.77	0.69

Note: group 1, all blood samples collected; group 2, nonanemic blood samples; group 3, anemic blood samples; PPV, positive predictive values; NPV, negative predictive values; r, Pearson correlation coefficient; K, Cohen's Kappa test.