Table 5.

Comparison of the positive rates before and after anti-nuclear antibody inactivation [n (%)].

Inactivation	Result	n	Positive rate	x2	P-value
method			(%)
Non-inactivated group 1 (n = 60)	+	39	65.00	0.036	0.849
	-	21
Inactivation group 1 (n = 0)	+	38	63.33
	-	22