Dear fellow Allstaters
Was wondering if anyone has an opinion on the definitions of volunteer
bias and non-response bias, especially in context of questionnaire
surveys. There is some potential overlap but I do not believe that one
is a simple inverse of the other.
Any thoughts
Best wishes
Philip Sedgwick
__________________________________________
Dr. Philip Sedgwick
Senior Lecturer in Medical Statistics,
Academic Lead and Chief Examiner for SSCs and Projects
Section of Medical and Healthcare Education,
Room 6.30, Sixth Floor, Hunter Wing
St. George's, University of London,
London SW17 0RE
Telephone +44 20 8725 5551
Fax +44 20 8725 3584
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