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Degrees of vomiting.
| Degrees | Explanations |
|---|---|
| Degree 0 | The patients had no vomiting in the day. |
| Degree I | The patients vomited once a day, which was mild nausea. |
| Degree II | The patients vomited 2 to 5 times a day, which was temporary nausea and vomiting. |
| Degree III | The patients vomited more than 6 times a day and needed parenteral nutrition and intravenous fluids for recovery. |
| Degree IV | The patients had severe vomiting, which still cannot be relieved after drug control. |
