Table 3.

Diagnostic validity of LMR at different cut-off values for discrimination of benign and malignant parathyroid glands.

Cut-off values for LMR	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy rate (%)
6.88a	84.4	30	43.5	75	51.2
6.32b	78.1	42	46.3	75	56.1
5.26c	68.8	62	53.7	75.6	64.6
4.85d	59.9	72	57.6	73.5	67.1
4.39e	46.9	76	55.6	69.1	64.6
4.17f	37.5	82	57.1	67.2	64.6

^aThreshold at the point with top 25th percentile (first quartile); ^bThreshold at the point with the top of three-quarter position; ^cThreshold at the point with median; ^dThreshold at a point derived from the receiver operating curve; ^eThreshold at the point with the bottom of three-quarter position (third quartile); ^fThreshold at the point with bottom 25th percentile.

LMR, lymphocyte-to-monocyte ratio; NPV, negative predictive value; PPV, positive predictive value.