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Demographic characteristics of the patients in the dextromethorphan and placebo groups (p > 0.05)
| Treatment group | Dextromethorphan | Placebo |
|---|---|---|
| Mean of age [years] | 68.65 | 69.25 |
| M/F (out of 20 patients) | 12/8 | 7/13 |
| Lag time to start treatment [h] | 11.9 | 10.4 |
