Guidelines
Copyright ©The Author(s) 2019.
World J Gastroenterol. Sep 28, 2019; 25(36): 5403-5422
Published online Sep 28, 2019. doi: 10.3748/wjg.v25.i36.5403
Table 1 Evidence level and recommendation strength
LevelDetailed description
Evidence Level
AHigh quality: Further research cannot change the reliability of these treatment assessment results.
BModerate quality: Further research may influence the reliability of these treatment assessment results, and may change the treatment assessment results.
CLow or very low quality: Further research will very likely influence the reliability of these treatment assessment results, and will very likely change the treatment assessment results.
Recommendation strength
1Strong recommendation: It is clearly shown that either the benefits of intervention clearly outweigh the disadvantages, or that the disadvantages outweigh the benefits.
2Weak recommendation: The benefits and disadvantages are unclear, or, regardless of the quality of the evidence, the benefits and disadvantages are comparable.