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[Variation in the prevention of cardiovascular risk factors. A population-based study].

BACKGROUND
Published studies on clinical practice variability have mainly focussed on variability in the rates of hospitalization and surgical procedures. The objective of this study was to evaluate variability in the measurement of cholesterolemia and blood pressure in four professional groups and in the general population.


METHODS
A cross-sectional survey was performed by mail in the city of Valencia (Spain). Five population groups were selected: physicians, nurses, lawyers, architects and the general population. The sample was obtained by random sampling of each group.


RESULTS
Of all the questionnaires returned, only those returned by individuals surveyed (1,755) and their partners (1,296) were used (total: 3,050). The frequency of preventive cholesterolemia measurement was greater among nurses (55.7%) and physicians (54.1%) than among architects (38.9%), lawyers (38.2%) and the general population (35.1%). The frequency of preventive blood pressure measurement was also greater among physicians (47.7%) and nurses (42.2%) followed by architects (39.4%) and lawyers (38.8%) and was lower among the general population (32.2%). After adjusting by sex, age group, marital status, level of education, and employment, only lawyers (RR = 0.79; 95% CI, 0.6-0.9) and architects (RR = 0.77; 95% CI, 0.68-0.88) showed a significantly lower probability of determining cholesterol levels than physicians (basal category) and nurses (RR = 1.05; 95% CI, 0.93-1.18). The general population showed the lowest probability of measuring blood pressure (RR = 0.8; 95% CI, 0.65-0.97), although the differences were statistically significant only when compared with physicians.


CONCLUSIONS
Preventive practices should be increased among groups in which they are less frequently performed until they are performed with the same frequency as among physicians and nurses. Efforts should be directed to increasing cardiovascular prevention programs in health centers.