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Comparison between risk factors in the dextromethorphan and placebo groups
| Treatment group | Dextromethorphan | Placebo | Value of p |
|---|---|---|---|
| Hypertension history (+/-) | 11/9 (55%/45%) | 16/4 (80%/20%) | 0.088 |
| Hyperlipidemia (+/-) | 2/18 (10%/90%) | 6/14 (30%/70%) | 0.118 |
| Ischemic Heart Disease (+/-) | 6/14 (30%/70%) | 5/15 (25%/75%) | 0.5 |
| Smoking (+/-) | 7/13 (35%/65%) | 4/16 (20%/80%) | 0.24 |
| Opium Addiction(+/-) | 2/18 (10%/90%) | 0/20 (0%/100%) | 0.244 |
