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The framework for calculating the predictive value and reliability of CHW collected data
| Gold standard (Research assistants data) | Test results (CHW data) | |
|---|---|---|
| Positive (+) | Negative (−) | |
| Positive (+) | a | b |
| Negative (−) | c | d |
Sensitivity = a/a + b
Specificity = d/c + d
Predictive value = a/a + c
