46
Diagnostic test accuracy reviews
83
References
Whiting PF, Rutjes AW, Westwood ME, Mallett S, Deeks JJ, Reitsma JB, Leeflang MM, Sterne JA, Bossuyt
PM; QUADAS-2 Group. QUADAS-2: a revised tool for the quality assessment of diagnostic accuracy
studies. Ann Intern Med. 2011;155(8):529-36.
Assessment of methodological quality tables (QUADAS)
In reviews of diagnostic test accuracy using QUADAS, each included study has an Assessment of
methodological quality table, listed under the study. Each row in the table consists of:
• A methodological quality item, e.g. 'Acceptable reference standard?'.
Tip: To see the underlying question in full, pause the cursor over the item to display a tool tip
text.
• The authors' judgment for that item, where Yes indicates a low risk of bias.
• A description that explains how the judgment was reached.
You can choose between a number of predefined methodological quality items, and also add your own.
See the Handbook for a description of the various predefined items.
The Assessment of methodological quality tables are called Risk of bias tables in intervention reviews. See
also the section on using QUADAS-2.
T
O ACTIVATE AN ITEM
1. Open the properties for the methodological quality table.
Click the Properties icon next to the 'Assessment of methodological quality table' heading.
2. Choose the item you wish to activate.
Click on the item in the left pane. The predefined items are blue and cannot be modified, while
user-defined items are black.
3. If the item must be assessed at the test level, add one or more test groups. See 'Study or test
level quality assessment' below.
4. Check the Activated box.
If the box is grayed out, this is because outcome groups have not yet been specified, see above.
5. Click OK.
The properties window closes and the new item is added to the table. If you defined multiple
outcome groups, there will be a row for each.
User defined characteristics
The Assessment of methodological quality table has a predefined set of standard characteristics, but you
can also add user defined characteristics.
T
O ADD A USER
-
DEFINED ITEM
1. Open the properties for the methodological quality table.
Click the Properties icon next to the 'Assessment of methodological quality table' heading.
2. Add the new item.
Click the Add button beneath the left-hand pane.
The item will be created with the default name 'New item'.
3. Edit the name in the Item field.
4. Input the Full Question.