Table 1 Diagnostic performance of various indexes in differentiating patients with Sjögren’s syndrome (SS) from patients suspected of having SS.

From: Whole-Volume ADC Histogram Analysis in Parotid Glands to Identify Patients with Sjögren’s Syndrome

Parameters

Cutoff value

Sensitivity

Specificity

Accuracy

AUC

P

Anti-SSA and/or anti-SSB antibody

+

75.0%

62.5%

71.1%

0.688

0.009*

Ocular tests

+

40.4%

66.7%

48.7%

0.359

0.566

X-ray sialography

+

73.1%

58.3%

68.4%

0.657

<0.029*

Lip biopsy

+

34.6%

91.7%

52.6%

0.631

0.067

MR morphology grade

Grades 1–3

59.6%

100.0%

72.4%

0.798

<0.001*

ADC (×10−6 mm2/s)

<647.4

25.0%

87.5%

44.7%

0.522

0.759

ADCmean (×10−6 mm2/s)

<669.6

28.8%

87.5%

47.4%

0.534

0.639

Skewness

<0.571

40.4%

87.5%

47.4%

0.589

0.215

Kurtosis

>4.930

40.0%

81.5%

53.7%

0.625

0.085

Entropy

>6.15

88.5%

83.3%

86.8%

0.924

<0.001*

  1. Note, AUC, Area under the receiver operating characteristic curve; *P < 0.05.