Table 4 Factors associated with a positive anti-HBs level – results of multivariable models (N = 2,489)

Model 1 (Recommended schedule (≥ 3 doses))

 Recommended schedule (≥ 3 doses)

  Yes

0.92

0.65–1.32

1.16

0.79–1.70

  No

Reference

Reference

 Time since last vaccination dose (in years)

0.85

0.82–0.88

0.83

0.79–0.86

 Type of vaccine

  Infanrix Hexa

Reference

Reference

  Hexavac

0.44

0.30–0.64

0.38

0.21–0.72

  Monovalent

1.38

0.98–1.96

2.06

1.42–2.99

Model 2; 3 versus 4 doses (Recommended schedule (≥ 3 doses))

 3 versus 4 doses

  3 doses

Reference

Reference

  4 doses

1.44

0.81–2.60

1.06

0.60–1.85

 Time since last vaccination dose (in years)

0.85

0.82–0.89

0.83

0.79–0.86

 Type of vaccine

  Infanrix Hexa

Reference

Reference

  Hexavac

0.47

0.31–0.69

0.42

0.20–0.85

  Monovalent

1.95

1.06–3.57

2.11

1.23–3.63