Risk factors for methicillin-resistant Staphylococcus aureus in diabetic foot infections

Figures & data

Table 1 Risk factors and outcomes associated with methicillin-resistant Staphylococcus aureus (MRSA) in diabetic foot infections

	MRSA negative n=40	MRSA positive n=17	p
Age	60.1 (15.38)	59.0 (14.25)	0.78
Gender (%, male)	65.0%	70.6%	0.68
Type 2 diabetes (%)	75.0%	88.2%	0.26
HgA1C	9.57 (3.28)	9.80 (2.34)	0.80
Current tobacco use	32.50%	47.00%	0.30
Peripheral vascular disease ABI < 0.9	58.10%	52.60%	0.69
Ankle brachial index	1.06 (0.59)	1.22 (0.51)	0.50
Peripheral neuropathy	90.0%	88.2%	0.84
Previous hospitalization <12 months	82.5%	100%	0.07
Nursing home resident	17.5%	0	0.07
Previous MRSA antibiotics <12 months	45.0%	58.8%	0.34
Previous antibiotics <12 months	52.5%	64.7%	0.40
Positive nasal swab	7.5% (4)	41.2% (7)	0.002
History + MRSA foot infection <12 months	0	23.5% (4)	0.001
Multidrug-resistant organism (≥2 pathogens)	47.5% (19)	82.4% (14)	0.02
Outcomes
Length of stay days (SD)	6.02 (4.16)	4.95 (3.46)	0.36
Amputation during hospitalization			0.69
°None	32.5%	41.2%	0.75
°Foot	65.0%	58.8%	0.89
°Leg	2.5%	0	1.00
Osteomyelitis	1.5%	17.6%	0.80