Table 1 Univariate and multivariate analyses of the determinants of rubella IgG seropositivity at study enrollment
From: Immunity to rubella: an Italian retrospective cohort study
Determinant | Univariate logistic regression | Multivariate logistic regression | ||
|---|---|---|---|---|
OR | 95%CI | aOR | 95%CI | |
Sex | ||||
• female | 1.0 | – | 1.0 | – |
• male | 0.5 | (0.4–0.7) | 0.5 | (0.4–0.7) |
Age at enrollment (years) | 0.95 | (0.90–1.01) | ||
Age at the time of first MMR vaccine | ||||
• < 2 years | 1.0 | – | 1.0 | – |
• ≥2 years | 1.7 | (1.2–2.4) | 1.5 | (0.9–2.4) |
Age at the time of second MMR vaccine (years) | 1.05 | (1.00–1.10) | 0.96 | (0.89–1.04) |
Time from the first to the second vaccine during the basal cycle (years) | 0.99 | (0.96–1.04) | ||
Time from the first MMR vaccine to the measurement of the antibody titer (years) | 0.93 | (0.89–0.97) | 0.99 | (0.93–1.06) |
Time from the second MMR vaccine to the measurement of the antibody titer (years) | 0.90 | (0.85–0.95) | 0.89 | (0.80–0.99) |