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| Adjusted OR (95% CI) | p | |
|---|---|---|
| Maternal demographics | ||
| Weight | 0.955 (0.922–0.990) | 0.011 |
| Body mass index | >0.05 | |
| Details of surgery and anesthesia | ||
| Emergency | >0.05 | |
| Intrathecal injection of morphine | 0.424 (0.202–0.889) | 0.023 |
OR, odds ratio; CI, confidence interval.
