Dear Allstaters
With respect to clinical trials, I was taught the definition of
single-blind as the assessor was blind to allcoation but tthe patient
was not. The concept I suppose was based on the fact it was always
possible to blind the assessor to allcoation, but not necessarily the
patient. Needless to say I have no reference. I was further taught,
like most things with time, this definition has relaxed and it is
possible for the assessor to be aware of allcoation, but the patient not
- still resulting in single-blind trial.
Does anyone have thoughts as to an original definition?
Best wishes
Philip Sedgwick
St. George's, University of London
London SW17 0RE
You may leave the list at any time by sending the command
SIGNOFF allstat
to [log in to unmask], leaving the subject line blank.
|