Table 1. Baseline characteristic of IE patients positive or negative for ANCA.

	ANCA-positive (n = 13)	ANCA-negative (n = 26)	P
Age (mean±SD	51.1±12.4	44.5±13.7	0.144
Male/female	7/6	14/12	0.632
Prosthetic valve IE	0	2(7.7)	0.439
Native valve IE	13(100)	24(92.3)
Normal valve	0	3(12.5)	0.260
Native valve predisposition	13(100)	21(87.5)
Rheumatic valve disease	1(7.7)	1(4.8)	0.626
Congenital heart disease	2(15.4)	1(4.8)	0.322
Valvular heart disease	10(76.9)	19(90.5)	0.274
Valve involvement	10(76.9)	21(80.8)	0.544
Mitral	4(40.0)	13(61.9)	0.224
Aortic	3(30.0)	4(19.0)	0.401
Tricuspid	0	0	–
Pulmonary	0	1(4.8)	0.677
Aortic plus mitral valves	3(30.0)	3(14.3)	0.284

Values in parentheses are percentages.