Copyright
©The Author(s) 2019.
World J Gastroenterol. Feb 21, 2019; 25(7): 744-776
Published online Feb 21, 2019. doi: 10.3748/wjg.v25.i7.744
Published online Feb 21, 2019. doi: 10.3748/wjg.v25.i7.744
Table 1 Evidence-level classification
| Level | Content |
| I | Based on a systematic review/meta-analysis of randomized controlled trials (RCTs) |
| II | Based on at least one RCT |
| III | Based on a non-RCT |
| IVa | Based on an analytical epidemiological study (cohort study) |
| IVb | Based on an analytical epidemiological study (case-control study, cross-sectional study) |
| V | Based on case series and case reports |
| VI | Based on opinions from a specialist committee or individual specialists without patient data |
- Citation: Chai NL, Li HK, Linghu EQ, Li ZS, Zhang ST, Bao Y, Chen WG, Chiu PW, Dang T, Gong W, Han ST, Hao JY, He SX, Hu B, Hu B, Huang XJ, Huang YH, Jin ZD, Khashab MA, Lau J, Li P, Li R, Liu DL, Liu HF, Liu J, Liu XG, Liu ZG, Ma YC, Peng GY, Rong L, Sha WH, Sharma P, Sheng JQ, Shi SS, Seo DW, Sun SY, Wang GQ, Wang W, Wu Q, Xu H, Xu MD, Yang AM, Yao F, Yu HG, Zhou PH, Zhang B, Zhang XF, Zhai YQ. Consensus on the digestive endoscopic tunnel technique. World J Gastroenterol 2019; 25(7): 744-776
- URL: https://www.wjgnet.com/1007-9327/full/v25/i7/744.htm
- DOI: https://dx.doi.org/10.3748/wjg.v25.i7.744