Table 3

Diagnostic performance of different US cut-offs using the 2016 ACR/EULAR primary SS criteria as reference standard

SensitivitySpecificityPositive predictive valueNegative predictive value
At least one gland with US score 1, 2 or 341/43=95%11/64=17%41/94=44%11/13=85%
At least one gland with US score 2 or 331/43=72%58/64=91%31/37=84%58/70=83%
At least one gland with US score 316/43=37%62/64=97%16/18=89%62/89=70%
At least two glands with US score 1, 2 or 338/43=88%22/64=34%38/80=48%22/27=81%
At least two glands with US score 2 or 330/43=70%60/64=94%30/34=88%60/73=82%
At least two glands with US score 315/43=35%63/64=98%15/16=94%63/91=69%
  • ACR, American College of Rheumatology; SS, Sj√∂gren syndrome; US, ultrasonography.