====== QC Checklist ======

  - Do the studies meet the inclusion criteria?
      - Are they the primary studies and not secondary studies?
      - Are there any papers with biased sub-populations? Flag them for further review.
  - Is the tagging complete?
      - Check for gap teeth
      - Check for missing tags
      - Use the bulk actions to apply missing tags to included studies and go back and add text.
  - Is extraction done correctly?
      - Are all the units matching?
        - Check this using quantitative synthesis
      - Is the same scale used for a given outcome across papers?
      - Is there missing data that should have been extracted?
        - Can standard deviation (SD) be calculated from standard error (SE) or confidence interval (CI)?
        - Was there data in the results/discussion section that should have been extracted?
        - Was there data in tables that should have been extracted?
        - Are there any secondary analyses with extra data we could extract?
          - If so, make sure you comment where you got the data.
        - Is there a supplement with useful data?
          - If so, make sure you comment where you got the data.
        - Is there data on clinicaltrials.gov?
          - If so, make sure you comment where you got the data.
      - Were there errors in the extraction?
        - Make sure means/medians are not confused.
        - Make sure SD/SE are not confused.
        - Make sure IQR and range are not confused.
        - Make sure LS means are treated separately from (arithmetic) means. Unless otherwise specified it will be an arithmetic mean.
        - Make sure loss to follow up is reflected in the sample sizes.
      - Are outcomes extracted at compatible timepoints across papers?
      - Are blanks and 0s properly differentiated?
      - Are the definitions of data elements consistent across papers?

If you prefer to have this in a downloadable word doc,{{ :wiki:guide:qc:qc_checklist.docx | here it is!}}