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Standardized bias scores for matched sample
| Variable | Early delivery to be more Same-day delivery | Late delivery to be more Same-day delivery |
|---|---|---|
| Standardized bias | Standardized bias | |
| Shipping fee | − 0.01 | 0.02 |
| Log (spatial distance) | − 0.04 | − 0.08 |
| Convenience goods | − 0.12 | − 0.04 |
| Specialty goods | − 0.03 | 0.08 |
| Season | 0.03 | 0.07 |
