Risk factors for S. aureus colonisation in children between 6 and 24 months of age using a Generalized Estimating Equations-model.

OR – Odds ratio; CI – Confidence interval; PCV7 – 7-valent pneumococcal conjugate vaccine.aCalculated using a Generalized Estimating Equations model with S. aureus colonisation as dependent variable and age as within-subject variable with un unstructured correlation structure. Data from all infants at age 6, 12, 18 and 24 months were included in the model; data from age 6 weeks were excluded since day care attendance was not present at this age.