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Prediction and classification of birth length status.
| Prediction | Birth after 10 months | Birth within 10 months | Total predictions |
|---|---|---|---|
| Positive prediction | True +Ve (a) | False +Ve (b) | Number of +Ve predictions (a + b) |
| Negative prediction | False -Ve (c) | True -Ve (d) | Number of -Ve predictions (c + d) |
| True totals | After 10 months (a + c) | Within 10 months (b + d) |
