Objective. To establish clinical competence of family physicians to diagnos
e systemic arterial hypertension and to analyze it's associations with some
variables related to working conditions and; prior training. Methods. The
clinical competence was established in a non probabilistic sample of 165 fa
mily physicians working in 12 units of the Institute Mexicano de Seguro Soc
ial (IMSS) in Mexico City. We used questionnaire of 160 items (true/false/d
on't know) to evaluate clinical competence. Association of the scores were
explored for work shift (morning/afternoon), working conditions (very favor
able/favorable/little favorable/unfavorable) and having been trained in a f
amiliar medicine residency of the IMSS (yes/no). Results. There were a gene
ral low competence to diagnose systemic arterial hypertension (median score
of 36 of a possible 160). There were associations of competence with more
favorable working conditions (p = 0.005 Kruskal-Wallis test) and with havin
g been trained previously (p = 0.0123 U Mann-Whitney test). Conclusions. Ou
r results support the need to continue in this area of research to improve
measuring instruments and to identify the modifiers of clinical competence
to overcome the deficiencies detected in the present study.