This study debates the multiple conceptual and methodological linkages between clinicai practice and epidemiology, alleging that the mode of production of epidemiological knowledge is inadequate for the making of the clinicai discourse. It subsequently assesses the degree of epistemiolo-gical legitimacy of the proposal of hybridization which consolidates into the so called "clinicai epidemiology", specially in relation to its attempt to technify the decision making process in both the diagnostic and thera-peutic fields of the clinicai practice, which came to be known as "clinimetry".