The problem of 'Neyman bias' appears in several (probably originating from
the same one) EBM guides to the potential weakness of cross-sectional
surveys. I ahve been unable to find a reference - can anyone help ?
thanks in advance
Robert Blizard
Principal Research Fellow
Department of Psychiatry and Behavioural Science
Royal Free and University
College School of Medicine
University College
Royal Free Campus
Rowland Hill Street
Hampstead
London NW3 2PF
Phone:- 0207-794-0500 ext 8864
Direct:- 0207-472-6126
Fax:- 0207-830-2808
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