Representation of South Asian people in randomised clinical trials: analysis of trials' data.

The study confirmed the reliability and validity of the instrument for the objective evaluation of the appropriateness of surgical bed occupancy in a colorectal unit. A Canadian report on the American appropriateness evaluation protocol showed a poor validity against a panel of experts ( =0.25). A European version of the protocol has been suggested but has not been validated in a substantial study. The validity of our instrument needs to be retested in other settings with a larger study population. Whether the instrument can be used as a tool for clinical decision making or audit needs to be confirmed in future studies.