Table 1.

Significance of demographic factors relative to MRSA carrier status

General	Factor	Category	MRSA+	MRSA–	Analysis method	P
Animal	Species	M. fasicularis	11	137
		M. mulatta	8	144	χ2	0.590
	Sex	Male	14	188
		Female	5	90	χ2	0.769
	Age	<4 y	4	85
		5–15 y	12	172
		>15 y	3	24	Fisher exact test	0.442
	Weight	<5 kg	9	152
		5–10 kg	9	100
		>10 kg	1	24	Fisher exact test	0.323
Geographic history	Time in US	<1 y	4	91
		1–5 y	10	75
		>5 y	3	39	Fisher exact test	0.168
	Time in colony	0–42 d	3	72
		43 d–1 y	7	112
		1–3 y	7	64
		>3 y	2	33	Fisher exact test	0.559
	Vendor	16 categories	na	na	Fisher exact test	0.599
	Origin type	Academic	0	5
		Import	17	218
		National Primate Center	2	31
		Pharmaceutical	0	20
		Unknown	0	3	Fisher exact test	0.795
Research use	Protocol	24 protocols	na	na	Logistic regression	None significant
	Investigator	A	0	16
		B	1	36
		C	0	30
		D	11	78
		E	5	74
		F	2	47	Fisher exact test	0.149
	History of surgery	Yes	9	46
		No	10	231	Fisher exact test	0.003
	No. of surgeries	1	7	27
		2	2	5
		3	0	10
		4	0	1	Fisher exact test	0.534
	History of dental procedure	Yes	8	38
		No	11	239	Fisher exact test	2.91 × 10−3
	No. of dental procedures	1	7	26
		2	1	8
		3	0	2
		4	0	1
		6	0	1	Fisher exact test	0.847
	History of clinical incident	Yes	9	69
		No	10	207	Fisher exact test	0.055
	Implant	Yes	1	23
		No	18	242	Fisher exact test	1
	History of steroid administration	Yes	5	9
		No	14	272	Fisher exact test	0.824 × 10−3
	History of antibiotic administration	Yes	13	91
		No	6	183	Fisher exact test	4.32 × 10−3
	Specific antibiotic administered	7 categories	na	na	Fisher exact test	None significant