Table 3.
Contribution of features towards the predicted gestational age
| Pearson's correlation | p value | |
|---|---|---|
| Demographic | ||
| Maternal age, years | −0·1 | <0·01 |
| Pregravid body-mass index, kg/m2 | −0·05 | 0·17 |
| Race | −0·05 | 0·15 |
| Ethnicity | −0·03 | 0·42 |
| Insurance | 0·09 | <0·01 |
| Parity | −0·03 | 0·35 |
| Gravidity | −0·03 | 0·35 |
| Preterm history | 0·17 | <0·0001 |
| Smoker | 0·01 | 0·85 |
| Illicit drug user | −0·01 | 0·83 |
| Comorbidities | ||
| Chronic diabetes status | −0·09 | <0·05 |
| Chronic hypertension status | −0·11 | <0·01 |
| Gestational diabetes status | −0·07 | <0·05 |
| Gestational hypertension status | −0·24 | <0·0001 |
| Health following SARS-CoV-2 infection | ||
| Max COVID-19 severity index | 0·03 | 0·31 |
| Gestational age at maternal SARS-CoV-2 infection | 0·11 | <0·01 |
| Max patient class | 0·05 | 0·13 |
| Number of SARS-CoV-2 encounters | 7·5 × 10−4 | 0·98 |
| Max oxygen device | −0·04 | 0·18 |
| Unique medication active ingredients | −0·21 | 0·0001 |
| Total number of diagnoses | −0·07 | 0·05 |
| Unique number of diagnoses | −0·08 | 0·05 |
| Fetal characteristics | ||
| Fetal sex | 0·05 | 0·10 |
| Delivery cord vessels | 0·15 | <0·0001 |
Pearson's correlation coefficient and the corresponding p values for the 24 features (two-tailed) used in the predictive models.