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Variable selection frequency for the 25 optimal ANN models.
| Variable* | % of models utilizing variable |
|---|---|
| Nulliparous | 88 |
| Diabetes | 72 |
| Epidural | 68 |
| Body mass index (BMI) | 58 |
| Maternal Age | 54 |
| Severe preeclampsia | 54 |
| Maternal fever | 24 |
A median of 4 variables (Quartile 1 = 3; Quartile 3 = 5) were selected across the 25 optimal ANN models.
