Diabetes Care, Vol 10, Issue 4 483-486, Copyright © 1987 by American Diabetes Association
Factors affecting staphylococcal colonization among NIDDM outpatients
BA Lipsky, RE Pecoraro, MS Chen and TD Koepsell
Because colonization with Staphylococcus aureus probably predisposes to
staphylococcal infections, we examined several factors that may be
associated with staphylococcal carriage in outpatients with
non-insulin-dependent diabetes mellitus and in nondiabetic controls. Nose
and skin carrier rates for 59 diabetic patients were significantly greater
(30.5%) than for 44 controls (11.4%) (P = .02), but rates did not differ
significantly between diabetic patients who injected insulin (31.0%) and
those who did not (30.0%). Among the diabetic patients, staphylococcal
colonization was not significantly correlated (P greater than .05) with
recent antibiotic treatment, age, race, or clinical duration of diabetes
but was inversely correlated (P less than .03) with glycemic control, as
measured by fasting plasma glucose and glycosylated hemoglobin levels.
Hospitalization in the previous year was also associated with
staphylococcal colonization, and it was significantly more common among the
diabetic patients than the controls; however, this did not account for the
increased colonization rates observed. Our results in a well-characterized
population confirm an increased rate of staphylococcal colonization among
diabetic as compared with nondiabetic outpatients but demonstrate that
neither injections of insulin nor various pertinent demographic factors
explain this finding.