Table 1: Sensitivity (Ss), specificity (Sp), positive (PPV), and negative (NPV) predictive values of anti-Ro52 reactivity in determining pulmonary involvement in connective tissue diseases.

ILDPARo52A(CI 95%)
Ss, %Sp, %PPV, %NPV, %

𝑛 = 2 6 𝑛 = 3 5 96.2 (89–100)83.3 (53–100)71.4 (56–86)83.3 (53–100)

ILD, interstitial lung disease; PARo52A, positive anti-Ro52 antibodies.