Critical appraisal:Givi B, Andersen PE, Diggs BS, Wax MK, Gross ND 2011 2

From Cancer Guidelines Wiki

Risk of bias assessment: cohort study

Subject selection
"New technology" group
Selected group
Comparison group
Selected group
Comparability of groups on demographic characteristics and clinical features
Not comparable and not adjusted for differences
Measurement of outcomes
Outcome measures blind to technology used
No, but objective measures used
Same method of measurement used across comparison groups
Completeness of follow-up
Was follow-up complete and were all patients included in the analysis?
Yes (follow-up >95%) or survival analysis using all patients
Overall risk of bias
High risk of bias Additional comments:

Jutta's tick icon.png This appraisal has been completed.

Givi B, Andersen PE, Diggs BS, Wax MK, Gross ND. Outcome of patients treated surgically for lymph node metastases from cutaneous squamous cell carcinoma of the head and neck. Head Neck 2011 Jul;33(7):999-1004 Available from:
Assigned to
Topic area
Guidelines:Keratinocyte carcinoma
Clinical question
Form:Quality appraisal cohort
Recurrence rate; Overall survival

Section below only relevant for Cancer Council Project Officer

Edit appraisal assignment