Table 4:

Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for Lewy body dementia with the abnormal swallow tail sign

	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
1.5 and 3T
Rater 1	50	79	36	87	74
Rater 2	95	66	41	98	72
Consensus	63	79	44	89	76
Consensus, 1.5- and 1.6-mm ST	69	91	75	88	84
Consensus, 2-mm ST	50	69	20	90	67
1.5T
Rater 1, 1.5T	25	75	9	91	70
Rater 2, 1.5T	80	70	25	97	71
Consensus, 1.5T	60	72	23	93	71
3T
Rater 1, 3T	57	84	57	84	76
Rater 2, 3T	100	61	50	100	72
Consensus, 3T	64	86	64	86	80

Note:—PPV indicates positive predictive value; NPV, negative predictive value; ST, section thickness.