Multidisciplinary approach toward enhanced recovery after surgery for total knee arthroplasty improves outcomes

Table 1 GRADE system for rating strength of recommendations and rating quality of evidence (Guyatt et al[15], 2008)

Recommendation strength	Definition
Strong	Desirable effects of intervention clearly outweigh the undesirable effects, or clearly do not
Weak	When trade-offs are less certain—either because of low-quality evidence or because evidence suggests desirable and undesirable effects are closely balanced
Evidence level	Definition
High quality	Further research unlikely to change confidence in estimate of effect
Moderate quality	Further research likely to have important impact on confidence in estimate of effect and may change the estimate
Low quality	Further research very likely to have important impact on confidence in estimate of effect and likely to change the estimate
Very low quality	Any estimate of effect is very uncertain