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Table 2 Factors associated with an incomplete HBV vaccination course (less than 3 doses) in hard-to-reach individuals

From: Hepatitis B vaccination uptake in hard-to-reach populations in London: a cross-sectional study

Variable Univariable regression Multivariable regression
OR (95% CI) OR (95% CI)
Gender p < 0.001 p = 0.01
 Male (base) (base)
 Female 2.78 (1.59–4.89) 2.37 (1.24–4.57)
Age (linear) p = 0.80 p = 0.07
 19–29 (base) (base)
 per 10 year increase 1.03 (0.82–1.30) 1.30 (0.98–1.72)
Ethnicity p = 0.29 p = 0.90
 White C/E European 1.28 (0.69–2.36) 1.16 (0.58–2.34)
 White Other (base) (base)
 Black African 2.57 (1.04–6.38) 1.27 (0.37–4.33)
 Black Other 0.91 (0.45–1.89) 0.77 (0.34–1.76)
 Mixed/Other 1.03 (0.43–2.46) 0.83 (0.32–2.18)
Birthplace p = 0.06 p = 0.65
 UK born (base) (base)
 Not UK born 1.7 (0.97–2.99) 1.19 (0.56–2.51)
Homelessness p = 0.02 p = 0.31
 Never (base) (base)
 History 0.34 (0.16–0.74) 0.68 (0.28–1.67)
 Current 0.62 (0.31–1.22) 1.11 (0.49–2.50)
Excessive alcohol consumption p = 0.24 p = 0.65
 No (base) (base)
 Yes 0.74 (0.57–1.03) 0.88 (0.50–1.54)
Smoking history p < 0.001 p = 0.02
 Absent (base) (base)
 Present 0.17 (0.06–0.46) 0.29 (0.09–0.89)
Green Book risk factors* p < 0.001 p < 0.001
 0 (base) (base)
 1 0.32 (0.16–0.66) 0.43 (0.20–0.92)
 2 or more 0.13 (0.07–0.26) 0.19 (0.09–0.39)
  1. All models present a complete case analysis where only participants with no missing data were included (n = 283). Likelihood ratio tests were used to calculate p-values. Multivariable model adjusts for all listed variables. *Green Book risk factors include current or intermittent drug use (history of IDU and current IDU), being imprisoned, having liver disease and additionally being infected with HCV on top of having liver disease. C/E Central and Eastern, CI Confidence Interval, IDU injecting drug use, HCV Hepatitis C virus, OR odds ratio