Variation and statistical reliability of publicly reported primary care diagnostic activity indicators for cancer: a cross-sectional ecological study of routine data.
Gary A AbelCatherine L SaundersSilvia C MendoncaCarolynn GildeaSean McPhailGeorgios LyratzopoulosPublished in: BMJ quality & safety (2017)
Use of indicators of diagnostic activity in individual general practices should principally focus on process indicators which have adequate or high reliability and not outcome indicators which are unreliable at practice level.