Table 1 Assessment of quality of general population studies and studies toward specific Populations at risk
From: Systematic review and meta-analysis of HIV, HBV and HCV infection prevalence in Sudan
| Aspect | Score | Description |
|---|---|---|
| Age | 0 | Not determined |
| 0 | Determined with clear bias; not representative to general/targeted population | |
| 1 | Determined with no clear bias; can be considered representative | |
| Gender | 0 | Not determined |
| 0 | Determined with clear bias | |
| 1 | Determined with no clear bias; can be considered representative | |
| Coverage | 1 | Single centre/local |
| 2 | Multi-centre/local | |
| 3 | Multi-centre/national | |
| Sample sizea | 0 | Less than 150 participants |
| 1 | More than 150 and less than 1000 participants | |
| 2 | More than 1000 participants |