Table 3.

Logistic Regression Analysis Predicting Carriage of Staphylococcus aureus in the US Population

CharacteristicOdds Ratio (95% CI)
CI = confidence interval.
Age, y
    1–60.74 (0.63–0.87)
    7–191.53 (1.36–1.73)
    20–641.00
    ≥ 650.73 (0.59–0.91)
Race/ethnicity
    Non-Hispanic white1.00
    Non-Hispanic black0.71 (0.61–0.83)
    Hispanic1.07 (0.93–1.24)
    Other0.94 (0.64–1.37)
Sex
    Male1.00
    Female0.66 (0.56–0.78)
Place of birth
    United States1.00
    Mexico0.67 (0.54–0.82)
    Elsewhere1.11 (0.89–1.39)
Use of antibiotics in past 30 d
    Yes0.63 (0.45–0.88)
    No1.00
Current smoker or smoker in the household
    Yes0.78 (0.65–0.95)
    No1.00
Asthma
    Yes1.24 (1.03–1.51)
    No1.00