Table 4.
Risk factors associated with S. mansoni and Hepatitis C virus infections among individuals living in fishing villages of northwestern Tanzania
| Variable | cRR | 95%CI | P-value | aRR | 95%CI | P-value |
|---|---|---|---|---|---|---|
| Sex | ||||||
| Female | 1 | 1 | ||||
| Male | 1.66 | 0.9–2.9 | 0.1 | 1.45 | 0.8–2.7 | 0.24 |
| Age groups (in years) | ||||||
| 15–25 | 1 | 1 | ||||
| 26–35 | 3.18 | 1.2–8.3 | 0.02 | 2.67 | 1.0–6.9 | 0.04 |
| 36–45 | 0.77 | 0.2–2.8 | 0.69 | 0.83 | 0.2–3.1 | 0.79 |
| 46–55 | 3.06 | 1.2–8.1 | 0.02 | 2.89 | 1.1–7.6 | 0.03a |
| Occupation | ||||||
| Small scale business | 1 | 1 | ||||
| Farming | 1.58 | 0.6–4.4 | 0.9 | 1.31 | 0.5–3.6 | 0.6 |
| Fishing | 2.93 | 0.9–9.4 | 0.1 | 1.89 | 0.6–6.3 | 0.3 |
| Village of residence | ||||||
| Sangabuye | 1 | 1 | ||||
| Kayenze | 3.53 | 1.6–7.9 | 0.002 | 3.67 | 1.6–8.3 | 0.02a |
| Igombe | 0.57 | 0.16 – 1.9 | 0.37 | 0.66 | 0.2–2.3 | 0.51 |
| Igalagala | 2.26 | 0.8–6.3 | 0.12 | 2.14 | 0.8–5.9 | 0.14 |
| Education level | ||||||
| Literate | 1 | – | – | – | ||
| Illiterate | 1.18 | 0.66–2.0 | 0.58 | – | – | – |
| Left liver lobe hepatomegaly | ||||||
| Normal | 1 | 1 | ||||
| Moderate | 1.60 | 0.8–3.1 | 0.16 | 1.79 | 0.9–3.5 | 0.1 |
| Marked | 2.26 | 1.1–4.8 | 0.03 | 2.32 | 1.1–4.9 | 0.03a |
| Splenomegaly | ||||||
| Normal | 1 | – | – | – | ||
| Moderate | 1.86 | 0.9–3.5 | 0.05 | – | – | – |
| Marked | 2.97 | 1.4–6.5 | 0.01 | – | – | – |
| Periportal fibrosis (PPF) grades | ||||||
| Normal | 1 | |||||
| Grade C | 0.54 | 0.1–3.8 | 0.54 | – | – | – |
| Grade D | 2.39 | 1.1–5.1 | 0.03 | – | – | – |
| Grade E & F | 1.02 | 0.1–7.1 | 0.98 | – | – | – |
aSignificant factors, cRR Crude Risk Ration, aRR Adjusted Risk Ratio