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Background: We assessed the cost-effectiveness of pharmacological treatments for hypertension to prevent coronary heart disease and stroke in Catalonia (Spain)., Methods: Cost-effectiveness was measured as the cost in Spanish Ptas per life year gained (LYG) in 1998 in individuals aged 40 to 69 years with moderate/severe hypertension (>= 105 mmHg) and mild hypertension (95-104 mmHg). We evaluated hydrochlorothiazide (diuretic), propranolol (-blocker), nifedipine (calcium antagonist), captopril (angiotensin-converting-enzyme inhibitor) and prazosin (*-adrenergic blocker)., Results: Cost-effectiveness ranged from 706,100 to 446,780 ptas. per LYG in men and from 635,100 to 810,270 ptas. per LYG in women with moderate/severe hypertension and from 108,770 to 682,460 ptas. per LYG in men and from 101,000 to 12,699,000 ptas. per LYG in women with mild hypertension. Incremental cost-effectiveness analysis showed that hydrochlorothiazide and propranolol were the most cost-effective treatments in individuals with moderate/severe hypertension while hydrochlorothiazide and nifedipine were most cost-effective in those with mild hypertension., Conclusion: In this study, greatest-to-lowest cost-effectiveness of assessed treatments was as follows: hydrochlorohiazide, propranolol, nifedipine, prazosin and captopril in moderate/severe hypertension and hydrochlorothiazide, nifedipine, propranolol, prazosin and captopril in mild hypertension.

Antituberculous chemoprophylaxis with isoniazide during a period of one year is very useful although it is not readily accepted. A community trial is designed in order to test if three health education interventions increase patients compliance with such treatment in case of tuberculin positive children who are not ill. The two interventions performed by nurses, one by phone, and the second one by a home visit, resulted in statistically significant difference when compared to the control group. This did not occur, however, with the intervention performed by the doctor in his office. A cost-effectiveness study demonstrates that the most efficient intervention has been the phone call.