Yavuz 2012.

Methods	Randomised controlled trial 4‐arm parallel‐group design Trial duration: 12 weeks
Participants	120 participants with knee osteoarthritis were randomised 120 participants were reported at baseline Number of females: 76 out of 120 (63%) Mean age: 60.0 years
Interventions	Experimental intervention Intervention (A): 40 mg triamsinolon acetonate (1 ml), single intra‐articular injection Intervention (B): 3 mg betametazone disodium phosphate (1 ml), single intra‐articular injection Intervention (C): 40 mg methylprednisolone acetate (1 ml), single intra‐articular injection Control intervention 1 ml 0.9% sodium chloride, single intra‐articular injection
Outcomes	Extracted pain outcome (A)‐(C): Pain overall Extracted function outcome (A)‐(C): Lequesne index Maximum follow‐up: 12 weeks
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Quote: "A total of 120 eligible patients with knee osteoarthritis were included (according to their admission date) and randomized into four groups."
Allocation concealment (selection bias)	Unclear risk	Method used to conceal the random sequence of allocation was not reported, so the risk of selection bias was unclear
Blinding of participants?	Unclear risk	It was unclear if participants were blinded
Blinding of health care provider(s)	Unclear risk	Physicians were not explicitly described as blinded, so the risk of performance bias was unclear
Intention‐to‐treat analysis performed? Pain	Unclear risk	It was unclear whether all participants randomised were also analysed
Intention‐to‐treat analysis performed? Function	Unclear risk	It was unclear whether all participants randomised were also analysed