Comparative Study of Multiple High-Signal-Intensity Spots on 3D and 2D Magnetic Resonance Sialography for Patients with Sjögren’s Syndrome

Table 2

Patientwise MR-S staging stratified by imaging method and cross section.

	Stage 0	Stage 1	Stage 2	Stage 3	Stage 4	Sensitivity (%) [95% CI]
3D MR-S (unilateral sagittal)	13	35	20	9	1	83.3 [73.2–90.8]	< 0.001^a (vs. 2D MR-S)
3D MR-S (axial)	16	31	24	6	1	79.4 [68.8–87.8]	< 0.001^a (vs. 2D MR-S)
3D MR-S (unilateral sagittal + axial)	12	33	22	10	1	84.6 [74.7–91.8]	< 0.001^a (vs. 2D MR-S)
2D MR-S (bilateral sagittal)	46	6	20	5	1	41.0 [30.0–52.7]

,  < 0.001, multiple comparisons of sensitivities by ^aFisher’s exact test and pairwise comparisons with the Bonferroni correction. MR-S: magnetic resonance sialography; CI: confidence interval.