Table 6 Risk factors associated with periportal fibrosis on Ijinga Island, north-western Tanzania
Variable | RR | 95%CI | P-value | aRR | 95%CI | P-value |
|---|---|---|---|---|---|---|
Sex | ||||||
 Female | 1 |  |  | 1 |  |  |
 Male | 1.07 | 1.01–1.13 | 0.03 | 1.08 | 1.02–1.16 | 0.01 |
Age groups (in years) | ||||||
 1–5 | 1 |  |  | 1 |  |  |
 6–15 | 1.05 | 0.94–1.16 | 0.38 | 1.06 | 0.92–1.21 | 0.39 |
 16–25 | 1.25 | 1.11–1.42 | 0.001 | 1.23 | 1.05–1.44 | 0.01 |
 26–35 | 1.36 | 1.21–1.55 | 0.001 | 1.42 | 1.21–1.67 | 0.001 |
 36–45 | 1.47 | 1.29–1.68 | 0.001 | 1.56 | 1.31–1.84 | 0.001 |
  ≥ 46 | 1.59 | 1.41–1.79 | 0.001 | 1.64 | 1.41–1.92 | 0.001 |
Infection status | ||||||
 Uninfected | 1 |  |  |  |  |  |
 Infected | 0.91 | 0.86–0.97 | 0.005 | – | – | – |
Intensity of infection (epg) | ||||||
 1–99 | 1 |  |  | 1 |  |  |
 100–399 | 0.95 | 0.88–1.03 | 0.19 | 1.00 | 0.94–1.08 | 0.92 |
  ≥ 400 | 0.99 | 0.89–1.10 | 0.89 | 1.12 | 1.01–1.23 | 0.02 |