Qiu 2005.

Methods	Randomized controlled trial Parallel group Multicenter
Participants	Outpatients with osteoarthritis of the knee Country: China N =142 Mean age = 57 ± 10 years Female: 92% Male: 8%
Interventions	GS 500 mg PO TID versus GH 480 mg PO TID Duration: 4 weeks
Outcomes	Knee pain at rest, on movement and pressure, swelling, morning stiffness, and walking ability according to Lequesne criteria. Adverse events
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	High risk	C ‐ Inadequate