Risk Factors for Methicillin-Resistant Staphylococcal aureus Skin and Soft Tissue Infections Presenting in Primary Care: A South Texas Ambulatory Research Network (STARNet) Study | American Board of Family Medicine

American Board of Family Medicine

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Table 1.

History of Risk Factor Exposure and Proportion with a Methicillin-Resistant Staphylococcal Aureus (MRSA)-Positive Culture (n = 94)

	MRSA Positive (%) (n = 63)	MRSA Negative (%) (n = 31)	Fisher's Exact Test
Recurrence	78.1	61.7	0.16
Caused by spider bite	72.2	66.7	0.78
Family exposure	81.2	64.5	0.25
School exposure	50.0	74.3	0.46
Work exposure	100.0	68.8	0.55
Prison exposure	60.0	67.4	1.00
Pets	61.5	708	0.46
Work with animals	100.0	66.7	1.00
Health care worker^*	92.3	63.8	0.05
Diabetes	77.8	65.3	0.41
Immunosupressed	50.0	69.8	0.38

* P < .05.

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Table 2:

Examination Findings Associated with a Methicillin-Resistant Staphylococcal Aureus (MRSA)-Positive Culture (n = 94)

	MRSA Positive (%) (n = 63)	MRSA Negative (%) (n = 31)	Fisher's Exact Test
Ulcer	66.7	67.6	1.00
Drainage	59.5	72.2	0.26
Abscess^*	70.9	0.0	<0.01
Multiple lesions	75.0	69.4	1.00
Cellulitis present	68.3	65.4	0.80
Location			0.63 (χ²)
Lower extremity	28.4	24.1
Upper extremity	17.0	15.5
Trunk	22.7	25.9
Buttock	21.6	24.1
Head	10.2	10.3

* P < .05.