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--- wiki:guide:qc [2022/01/27 14:12]
bmk
+++ wiki:guide:qc [2022/04/18 21:05] (current)
khutchison
@@ Line 24: / Line 24: @@
 In the case that the study should not be included, note the reason that exclusion is recommended for secondary review.
+When performing an SR/MA, you should also be sure that it does not have an excessively small or excessively large number of included studies. Always seek input from a statistician on this matter, as an "appropriate size" for an SR/MA is highly variable and depends on the specific study design and client requests. Generally speaking, you might expect a meta-analysis with inferential statistics to include anywhere from 4 to 50 studies.
 ===== Extraction =====
@@ Line 34: / Line 36: @@
   * Check that outcomes are reported on consistent scales with the same units (ex: if pain is reported on a VAS vs NRS scale, then there is a need to create two separate data elements).
   * Check units of data elements to ensure they are consistently reported the same way.
+  * Make sure that the tagged intervention groups match the extracted intervention groups.
 Go through each study and check that each element, intervention, and follow-up period are correctly extracted, paying special attention to the abstract, tables, methods and results.
@@ Line 48: / Line 51: @@
 QC requires a thorough understanding of the statistical measurements that are encountered when reading scientific literature. Refer to the following list if clarification is needed.
-Mean - The average of a set of numbers. This measure can be combined across populations if there are two means reported.
+| <font 11pt/inherit;;black;;inherit>Mean</font>     |The average of a set of numbers. This measure can be combined across populations if there are two means reported. This is NOT the same thing as Least Square (LS) mean.|
+| <font 11pt/inherit;;black;;inherit>Median</font>     |The middle value of a listed set of numbers. This measure can not be combined or used as a mean.|
+| <font 11pt/inherit;;black;;inherit>Standard Deviation (SD)</font>     |A measure of the amount of variance within a set of numbers. Typically reported with a mean value using the symbol '±'|
+| <font 11pt/inherit;;black;;inherit>Standard Error (SE)</font>     |The standard deviation of a sample of the larger population. This is NOT the same thing as SD and should not be used in replacement of SD.|
+| <font 11pt/inherit;;black;;inherit>Range</font>     |The difference between the highest and lowest numbers in a given set. Typically given alongside the median.|
+| <font 11pt/inherit;;black;;inherit>Interquartile Range (IQR)</font>     |The difference between the upper and lower quartiles. This is NOT the same thing as Range and should not be used as a replacement.|
-Median - The middle value of a listed set of numbers. This measure can not be combined or used as a mean.
+====== NK-specific QC ======
-Standard Deviation (SD) - A measure of the amount of variance within a set of numbers. Typically reported with a mean value using the symbol '**±'**
+//To be done in addition to steps outlined above. //{{:wiki:guide:qc_checklist_for_wikis.docx|qc_checklist_for_wikis.docx}}
-Standard Error (SE) - The standard deviation of a sample of the larger population. This is NOT the same thing as SD and should not be used in replacement of SD.
-Range - The difference between the highest and lowest numbers in a given set. Typically given alongside the median.
-Interquartile Range (IQR) - The difference between the upper and lower quartiles. This is NOT the same thing as Range and should not be used as a replacement.
-====== NK-specific QC ======
 ===== Tagging =====
 //QC after review Screening section and review before Extraction section.//
   * Look at the sunburst diagram in qualitative synthesis and evaluate gap teeth. Gap teeth occur when a study has been tagged at the higher level instead of the lower, most specific level. If studies are tagged with Study Design instead of the most specific tag, this may result in gap teeth. Gap teeth can also result when there is a small amount of studies tagged.
   * For tagging only nests, evaluate each study for tagging similar to the process of checking the extraction.
@@ Line 79: / Line 78: @@
   * Let the team or project lead know that QC is complete and include notes and recommendations in the email.
-  * In the Nest Comments, type up a QC report detailing any changes that have made to the nest and any clarifications or new standards that have been set. Recomendations should not be included in the QC report, only actions that were taken. Include the date that QC was completed.
+  * In the Nest Comments, type up a QC report detailing any changes that have made to the nest and any clarifications or new standards that have been set. Recommendations should not be included in the QC report, only actions that were taken. Include the date that QC was completed.

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