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| Methods | Randomized controlled trial Double blinded Parallel group Single center | |
| Participants | Outpatients with osteoarthritis of the knee Country: USA N = 114 Female: 5% Male: 95% | |
| Interventions | GS 500 mg PO TID versus placebo PO TID Duration: 2 months | |
| Outcomes | VAS pain at rest VAS pain while walking | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | High risk | C ‐ Inadequate |
