Critical Appraisal.
PICOT Question: In patients aging 40 years and above, how does the application of an influenza vaccine compared to not obtaining the vaccine influence the possibility of contracting Guillain-Barre Syndrome (GBS) during six months?
For the final assignment using the critical appraisals from all the retrieved sources of research evidence and using the appropriate critical appraisal tool for each source of evidence, complete the Critically Appraised Topic (C.A.T.) table attached. Identify each source’s correct placement in the evidence hierarchy. Put the first author’s last name of each article in a column in the C.A.T.; put its design and its evidence level in the correct row for each column of the table. If the pdf versions of the articles appraised have not been previously submitted, please submit with the completed C.A.T. table to Assignments. In the subject line, please label “your last name, CAT, topic”.