Estimated odds ratios (ORs) for S. aureus nasal colonization by body mass index (BMI) in age tertiles of women and men.

The Tromsø Staph and Skin Study (n = 3,878)a.n, numbers; CI, confidence intervals.P for interaction using BMI categories as Ptrend and age tertiles (middle versus lowest), among women: 0.15 and men: 0.66; age tertiles (highest versus lowest), among women: 0.42 and men: 0.11.aNumbers may vary due to missing information.bMultivariable logistic regression model including: current smoking (yes/no), diabetes mellitus (yes/no), education level (cAmong men 60–87 years, the BMI categories 2 were put together due to small numbers.