Table 2

		(CI 95%)
IPI	PARo52A	Ss, %	Sp, %	PPV, %	NPV, %
n=41	n=20	48.7 (29-71)	44.4 (20-68)	66.7 (46-88)	43.2 (19-67)

Table 2: Sensitivity (Ss), specificity (Sp), positive (PPV) and negative (NPV) predictive values of anti-Ro52 reactivity in determining pulmonary involvement in scleroderma
IPI, interstitial pulmonary involvement; PARo52A, positive anti-Ro52 antibodies.