Résumé :
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[BDSP. Notice produite par INIST 2XXR0x9Y. Diffusion soumise à autorisation]. Objectives : to estimate the proportion of interventions in general practice that are based on evidence. Design : a one-year cross-sectional study involving all consultations by patients over age 15 years seen in 34 national primary health care centers. Setting : the rural Castellon provincial district within the Valencian Community in eastern Spain, with a total population of 21,155 inhabitants. Subjects : of 1990 case histories registered in the course of one year, 4800 consultations were identified ; of these, 2341 (49%) distinct diagnosis-intervention pairs were identified and coded. Main results : the evidence basis for the diagnosis-intervention pairs in the study was derived from a computerized search of the scientific literature published in 1992-1996. The quality of the evidence was classified according to the method of Ellis et al. Within the 2341 diagnosis-intervention pairs, there was positive evidence in support of the intervention used in 55%. The evidence basis was sound for 42%, with 38% being based on Type I (clinical trials) evidence and 4% on Type II evidence. The most frequently presenting diseases involved the circulatory (18.7%), respiratory (14.9%), nervous (14.2%), musculo-skeletal (12.5%) and nutrition and metabolism and digestive systems, with 12.1% each. (...)
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