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Assessment of quality of studies providing prevalence rates among blood donors and pregnant women
| Aspect | Score | Description |
|---|---|---|
| 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 |
aThresholds were set based on authors opinion solely
