Table 1.

Patient characteristics

Characteristic	AZA (n=71)	CYC (n=73)	All
Age (yr)	56 (47–66)	57 (45–67)	57 (47–67)
Women	41 (58)	35 (48)	76 (53)
GPA	46 (65)	46 (63)	92 (64)
Anti-PR3+	44 (62)	46 (63)	90 (63)
Creatinine (mg/dl)	1.6 (0.93–2.41)	2.35 (1.21–3.51)	1.79 (1.09–2.99)
Birmingham vasculitis activity score	17.5 (7.5–24)	16 (10–24)	17 (10–24)

Data are presented as the median (interquartile range; 25th to 75th percentile) or n (%). GPA, granulomatosis with polyangiitis/Wegener’s; anti-PR3⁺, anti-proteinase 3 antibody or positive for cytoplasmic ANCA if an ELISA was not performed; AZA, azathioprine group; CYC, cyclophosphamide group.