- Framework of problems / Rigorous
- Flawed risk of bias undertaken
- Assessments of attrition bias in Cochrane systematic reviews are highly inconsistent and thus hindering trial comparability
| Ref ID | 444 |
| First Author | A. Babic |
| Journal | BMC MEDICAL RESEARCH METHODOLOGY |
| Year Of Publishing | 2019 |
| URL | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6451283/pdf/12874_2019_Article_717.pdf |
| Keywords |
• Missing data • Cochrane • General medical • Risk of bias |
| Problem(s) |
• Flawed risk of bias undertaken • Weaknesses identified in some Cochrane reviews |
| Number of systematic reviews included | 729 |
| Summary of Findings | High inconsistency was found in the assessment of risk of bias related to incomplete outcome data, i.e. attrition bias in the included Cochrane reviews. Inconsistencies were found with the number of judgments, names of risk of bias domains and different judgments for the same supporting explanations, even within the same Cochrane review. One third of Cochrane review authors had more than one category of explanations; some had up to four different categories. |
| Did the article find that the problem(s) led to qualitative changes in interpretation of the results? | N/A |
| Are the methods of the article described in enough detail to replicate the study? | Yes |