Table 1

Ultrasound of major salivary glands versus salivary gland biopsy, sialometry and anti-SSA/Ro antibodies status

Parotid gland biopsy (n=78)Labial gland biopsy (n=56)UWS (n=98)Anti-SSA/Ro antibodies (n=103)
Optimal cut-off point15141515
% Absolute agreement83.3% (65/78)78.6% (44/56)66.3% (65/98)81.6% (84/103)
Sensitivity75.0% (21/28)72.4% (21/29)54.5% (30/55)69.8% (37/53)
Specificity88.0% (44/50)85.2% (23/27)81.4% (35/43)94.0% (47/50)
PPV77.8% (21/27)84.0% (21/25)78.9% (30/38)92.5% (37/40)
NPV86.3% (44/51)74.2% (23/31)58.3% (35/60)74.6% (47/63)
  • NPV, negative predictive value; PPV, positive predictive value; UWS, unstimulated whole saliva.