Table 3. Multivariable model of risk factors for conversion from a non-colonized nasal MRSA carriage pattern to colonized over the next 6 months.

Variable	Odds Ratio	95% CI	P value
Age 70 or less	0.66	(0.54;0.80)	<.001
Number of swabs in follow-up period	1.10	(1.06;1.14)	<.001
Long term care/past year	2.64	(1.73;4.04)	<.001
Diabetes	1.20	(0.98;1.46)	.08
MRSA active antibiotic in follow-up period	1.35	(1.11;1.65)	.003
Other antibiotic in follow-up period	1.57	(1.19;2.07)	.002