Table 3.
Factors associated with hepatitis B virus exposure among Afro-descendant communities, Brazil Central, 2015–2016.
| Factors | HBV prevalence | % | OR (95% CI) | p-value | Adjustedc OR (95%CI) | p-value |
|---|---|---|---|---|---|---|
| Community | ||||||
| SB | 27/75 | 36.0 | 1 | 1 | ||
| FD | 73/112 | 65.2 | 3.33 (1.81–6.13) | <0.001 | 4.22 (2.04–8.76) | <0.001 |
| Gender | ||||||
| Female | 50/96 | 52.1 | 1 | |||
| Male | 50/91 | 54.9 | 1.12 (0.63–1.99) | 0.695 | — | — |
| Age (years) | ||||||
| 1–10 | 1/17 | 5.9 | 1 | 1 | ||
| 11–20 | 6/22 | 27.3 | 6.00 (0.65–55.66) | 0.115 | 8.94 (0.90–89.06) | 0.062 |
| 21–30 | 8/11 | 72.7 | 42.67 (3.81–478.42) | 0.002 | 59.91 (4.81–745.55) | 0.001 |
| 31–40 | 16/32 | 50.0 | 16.00 (1.89–135.42) | 0.011 | 22.07 (2.42–201.33) | 0.006 |
| 41–50 | 27/43 | 62.8 | 27.00 (3.26–223.33) | 0.002 | 29.76 (3.42–258.67) | 0.002 |
| 51–60 | 19/31 | 61.3 | 25.33 (2.96-216.54) | 0.003 | 37.82 (4.01–356.54) | 0.002 |
| > 60 | 23/31 | 74.2 | 46.00 (5.23–404.73) | 0.001 | 63.63 (6.56–617.56) | <0.001 |
| Educational level (years) | ||||||
| ≥10 | 18/33 | 54.6 | 1 | |||
| 1–9 | 72/138 | 52.2 | 0.91 (0.42–1.95) | 0.806 | — | — |
| 0 | 10/16 | 62.5 | 1.39 (0.41–4.72) | 0.598 | — | — |
| History of surgery | ||||||
| No | 51/96 | 53.1 | 1 | |||
| Yes | 49/91 | 53.9 | 1.03 (0.58–1.83) | 0.921 | — | — |
| History of a family member HBV-infecteda | ||||||
| No | 49/111 | 44.1 | 1 | |||
| Yes | 41/64 | 64.1 | 2.26 (1.20–4.25) | 0.012 | 2.79 (1.32–5.91) | 0.007 |
| People per housinga | ||||||
| 1–4 | 76/137 | 55.5 | 1 | |||
| ≥5 | 24/49 | 49.0 | 0.77 (0.40–1.48) | 0.434 | — | — |
| Shared personal objectsa | ||||||
| No | 56/108 | 51.9 | 1 | |||
| Yes | 42/75 | 56.0 | 1.18 (0.65–2.14) | 0.580 | — | — |
| History of blood contacta | ||||||
| No | 93/170 | 54.7 | 1 | |||
| Yes | 5/13 | 38.5 | 0.52 (0.16–1.65) | 0.265 | — | — |
| Sexual activityb | ||||||
| No | 6/12 | 50.0 | 1 | |||
| Yes | 93/156 | 59.6 | 1.48 (0.46–4.78) | 0.516 | — | — |
| Steady partnerb | ||||||
| Yes | 59/94 | 62.8 | 1 | |||
| No | 40/74 | 54.1 | 0.70 (0.38–1.30) | 0.255 | — | — |
| Condom useb | ||||||
| Always | 9/18 | 50.0 | 1 | |||
| Occasionally/Never | 82/134 | 61.2 | 1.58 (0.59–4.23) | 0.366 | — | — |
| History of STIb | ||||||
| No | 81/134 | 60.5 | 1 | |||
| Yes | 8/14 | 57.1 | 0.87 (0.29–2.66) | 0.810 | — | — |
95% CI: 95% confidence interval; OR: Odds ratio; STI: sexually transmitted infection. aThe total represents the number of individuals who answered the question. bThe total represents the number of individuals ≥13 years old who answered the question. cAdjusted for community, age, and history of a family member HBV-infected.