Table 1.

GRADE evaluation.

Outcomes	RoB	Incon	Indir	Imprecision	Pub bias	Other	Quality of the evidence
CS vs PRP
VAS
Very short-term	No	Some	No	Some	No	No	Low : ⊕⊕◯◯
Short-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Mid-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Long-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
WOMAC
Very short-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Short-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Mid-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Long-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
CS vs HA
VAS
Very short-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Short-term	No	Some	No	No	No	No	Moderate: ⊕⊕⊕◯
Mid-term	No	Some	No	No	No	No	Moderate: ⊕⊕⊕◯
Long-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
WOMAC
Very short-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯
Short-term	No	Some	No	No	No	No	Moderate: ⊕⊕⊕◯
Mid-term	No	Some	No	No	No	No	Moderate: ⊕⊕⊕◯
Long-term	No	Some	No	Some	No	No	Low: ⊕⊕◯◯

Incon, inconsistency; Indir, indirectness; Pub, publication; RoB, risk of bias.