Table 1.

Demographic characteristics, contact history and risk factors related to gender in CM patients

	Male (n = 77)	Female (n = 31)	P
Demographic characteristics
Age (years), mean ± SD	38.95 ± 18.32	33.55 ± 15.65	0.15
Contact history, no. (%)	3 (3.9)	2 (1.4)	0.624
Risk factors
Use of corticosteroids and/or immunosuppressants, no. (%)	9 (11.7)	10 (32.3)	0.011*
History of SLE or other autoimmune diseases, no. (%)	3 (3.9)	9 (29)	<0.001*
History of kidney diseasesa, no. (%)	1 (1.3)	3 (9.7)	0.07
History of hematopathy, no. (%)	2 (2.6)	0 (0)	0.506
History of DM, no. (%)	4 (5.2)	1 (3.2)	0.554
History of TB, no. (%)	5 (6.5)	1 (3.2)	0.444
History of other diseasesb, no. (%)	2 (2.6)	3 (9.7)	0.145
History of malignant cancer, no. (%)	1 (1.3)	0 (0)	0.713
History of organ transplantation, no. (%)	1 (1.3)	0 (0)	0.713

^* P < 0.05

^aKidney diseases included renal failure 2 cases and RPGN 1 case

^bOther diseases included hyperthyroidism 1 case, pregnant 1 case and gastric ulcer 1 case