Table 2. Comparison of rheumatoid arthritis patients with and without Demodex mite presence and Demodex infestation.

		Demodex mite presence (n=41)				Demodex infestation (n=17)
	n	n	%	Mean±SD	P	n	%	Mean±SD	p
Age (year)					0.780				0.535
Positive	41			53.7±12.1		17		51.8±12.3
Negative	52			53.0±10.7		76		53.7±11.1
Disease duration (month)					0.274				0.719
Positive	41			99.1±77.5		17		85.2±40.3
Negative	52			83.7±57.2		76		91.6±71.7
Sex					0.256				0.171
Male	16	5	31.3			1		6.3
Female	77	36	46.8			16		20.8
Symptoms
Skin redness	35	16	44.4		0.476	7		20.0	0.740
Acne Itching	17	7	41.1		0.900	3		17.6	0.603
Eyes	40	14	35.0		0.222	7		17.5	0.918
Ears	29	9	31.0		0.142	4		13.8	0.569
Face	20	9	45.0		0.799	4		20.0	0.710
Disease activity					0.985				0.578
Remission (DAS28 <2.6)	46	20	43.5			9		19.6
Low (DAS28 2.6-3.2)	34	15	44.1			7		20.6
Moderate (DAS28 3.2-5.1)	8	4	50.0			-		-
High (>5.1)	5	2	40.0			1		20.0
Non-corticosteroids	36	18	50.0		0.361	7		19.4	0.817
Corticosteroids	57	23	40.4			10		17.5
One cDMARDs	59	30	50.8			14		23.7
Two cDMARDs combination	31	10	32.3		0.238	3		9.7	0.209
Three cDMARDs combination	2	1	50.0			-		-
Non-bDMARDs	79	36	45.6		0.494	14		17.8	0.716
bDMARDs	14	5	35.7			3		21.4
SD: Standard deviation; DAS28: Disease activity score 28; cDMARDs: Conventional disease-modifying anti-rheumatic drugs; bDMARDs: Biological disease- modifying anti-rheumatic drugs.