[Cost-effectiveness of atorvastatin against simvastatin as hypolipemic treatment in hypercholesterolemic patients in primary care]

Aten Primaria. 2001 Jan;27(1):18-24. doi: 10.1016/s0212-6567(01)78767-7.
[Article in Spanish]

Abstract

Objective: To perform an economics evaluation of lipid-lowering therapy with atorvastatin and simvastatin in patients with hypercholesterolemia in primary care setting.

Design: Cost-effectiveness analysis (CEA) has been carried out by means of an open, random, prospective, "real world" study, with hypercholesterolemic patients (total cholesterol [TC] > 240 mg/dl and cLDL > 160 mg/dl).

Patients: A total of 92 patients were included (44.8% males), with a mean age of 64.9 +/- 9.4 years old (mean +/- standard deviation). 41.4% were diabetics, 62.1% hypertensives and 16.1% smokers.

Interventions: Patients were allocated to simvastatin 20 mg/day (44) and atorvastatin. 10 mg/day (48) for 6 months. ASSESSMENT AND MAIN RESULTS: Both therapies reduced significantly cLDL, TC and triglycerides at the end of the study. Atorvastatin reduced lipids faster than simvastatin at 3 months (p < 0.05), but significant differences could not be observed at 6 months. Atorvastatin reduced cLDL levels by 21.5 +/- 13.2% and 23.8 +/- 13.9% at 3 and 6 months, respectively, versus 16.4 +/- 14.2% and 22.8 +/- 10.8% with simvastatin. By these reductions, 54.2% of patients treated with atorvastatin and 50.0% of those allocated to simvastatin reached therapeutic goals of cLDL control. Atorvastatin 10 mg was more cost-effective than simvastatin 20 mg; 95,406 versus 101,335 pts per patient reaching therapeutic goals, respectively, which means that simvastatin need an extra cost of 24,833 pts per patient reaching therapeutic goals to be as efficient as atorvastatin. Sensitivity analysis to control for uncertainty confirmed the results of cost-effectiveness analysis.

Conclusions: Both statins were effective as lipid-lowering agents. However, atorvastatin 10 mg was more efficient than simvastatin 20 mg due to a better cost-effectiveness ratio.

Objetivo: Realizar una evaluación económica de atorvastatina frente a simvastatina en pacientes hipercolesterolémicos en atención primaria.

Diseño: El análisis de coste-efectividad se ha realizado mediante un estudio abierto, prospectivo, aleatorizado, de intervención en condiciones de uso habitual, en pacientes hipercolesterolémicos (colesterol total [CT] > a 240 mg/dl, cLDL > 160 mg/dl).

Pacientes: Se incluyó un total de 92 pacientes (44,8% varones), con una edad de 64,9 ± 9,4 años (media ± desviación estándar). Un 41,4% era diabético, el 62,1% hipertenso y un 16,1% fumador.

Intervenciones: Cuarenta y cuatro pacientes recibieron simvastatina, 20 mg/día, y 48, atorvastatina, 10 mg/día, durante 6 meses.

Mediciones y resultados principales: Los cLDL, CT y triglicéridos se redujeron significativamente con ambos tratamientos. Atorvastatina redujo más rápidamente los parámetros lipídicos (3 meses, p < 0,05) que simvastatina, pero sin diferencias significativas a los 6 meses: reducción de cLDL en un 21,5 ± 13,2% y 23,8 ± 13,9% a los 3 y 6 meses, respectivamente, con atorvastatina, frente a 16,4 ± 14,2% y 22,8 ± 10,8% con simvastatina. Un 54,2% de los pacientes con atorvastatina y un 50,0% con simvastatina alcanzaron los objetivos de control del cLDL. Atorvastatina, 10 mg, resultó más coste-efectiva: 95.406 frente a 101.335 pts. por paciente que alcanza los objetivos terapéuticos, respectivamente, lo que supone que simvastatina necesita un coste adicional de 24.833 pts. por encima de atorvastatina por paciente que alcanza los objetivos terapéuticos para lograr el mismo nivel de eficiencia. El análisis de sensibilidad realizado para minimizar el nivel de incertidumbre confirma los resultados observados.

Conclusiones: Ambas estatinas se han mostrado igual de efectivas en reducir las cifras de colesterol. Sin embargo, atorvastatina, 10 mg, ha resultado ser más eficiente que simvastatina, 20 mg, al mostrar una mejor relación coste-efectividad.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Aged
  • Anticholesteremic Agents / therapeutic use*
  • Atorvastatin
  • Cholesterol / blood
  • Cost-Benefit Analysis
  • Female
  • Heptanoic Acids / therapeutic use*
  • Humans
  • Hypercholesterolemia / blood
  • Hypercholesterolemia / drug therapy*
  • Male
  • Middle Aged
  • Prospective Studies
  • Pyrroles / therapeutic use*
  • Simvastatin / therapeutic use*
  • Triglycerides / blood

Substances

  • Anticholesteremic Agents
  • Heptanoic Acids
  • Pyrroles
  • Triglycerides
  • Cholesterol
  • Atorvastatin
  • Simvastatin