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Vol. 58. Issue 6.
Pages 274-282 (June 2011)
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Vol. 58. Issue 6.
Pages 274-282 (June 2011)
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Direct health care costs in patients with type 2 diabetes mellitus six months after starting insulin treatment in Spain: The INSTIGATE Study
Costes directos sanitarios en pacientes con diabetes mellitus tipo 2 a los seis meses de inicio del tratamiento con insulina en España: estudio INSTIGATE
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María Costia, Helen Smithb, Jesús Reviriegoa, Conxa Castellc, Alberto Godayd, Tatiana Dillaa,
Corresponding author
dilla.tatiana@lilly.com

Corresponding author.
a Departamento de Investigación Clínica, Lilly S.A., Alcobendas, Madrid, Spain
b European Outcomes Research, Eli Lilly, Erl Wood Manor, Surrey, United Kingdom
c Departament de Salut Generalitat de Catalunya, Barcelona, Spain
d Servicio de Endocrinología, Hospital del Mar, Universidad Autónoma de Barcelona, Barcelona, Spain
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Abstract
Background and objectives

The INSTIGATE study was designed to assess the direct health care costs incurred by patients with type 2 diabetes mellitus (T2DM) who start insulin therapy in Spain. It was a multicenter, observational, non-interventional, prospective study.

Methods

Direct costs per patient in standard clinical practice were assessed for 6 months before and after the start of insulin therapy from the perspective of the Spanish health care system. A total of 188 patients (42.6% women) with a mean age of 65.3 years, a mean body mass index of 29.7kg/m2, and a mean disease duration of 10.7 years were assessed.

Results

Before insulin therapy was started, the mean (standard deviation) values of various clinical parameters were: hemoglobin A1c (%), 9.22 (1.58); fasting plasma glucose (mmol/L), 12.03 (3.62); and total cholesterol (mmol/L), 4.90 (1.1). These values decreased after insulin therapy was started. Mean total direct health care costs per patient 6 months before and after insulin start were €639 and €1,110, respectively. Mean total costs 6 months after insulin was started included hospitalization costs (30.5%, €339), insulin (16.2%, €180), primary care (14.3%, €159), blood glucose monitoring (13.8%, €153), specialized care (13.3%, €148), oral antidiabetics (7.8%, €87), and other diabetes-related treatment (3.9%, €43).

Conclusions

The clinical outcomes of T2DM patients improved after insulin therapy was started. This improvement was associated with increases in resource utilization and direct health care costs in the first 6 months of insulin therapy.

Keywords:
Health care costs
Insulin therapy
Diabetes mellitus
Type 2
Prospective studies
Spain
Resumen
Antecedentes y objetivo

El estudio INSTIGATE tuvo como objetivo evaluar los costes directos sanitarios incurridos por pacientes con diabetes mellitus tipo-2 (DM2) que inician insulinoterapia en España. Es un estudio observacional, no intervencionista, prospectivo y multicéntrico.

Material y métodos

Se valoraron los costes directos por paciente, según la práctica clínica habitual, durante un período de 6 meses antes y después del inicio de la insulinoterapia. En total se evaluaron 188 pacientes (42,6% mujeres) con una edad media de 65,3 años, un índice de masa corporal medio de 29,7kg/m2 y una duración media de la enfermedad de 10,7 años.

Resultados

Antes de iniciar la insulinoterapia, la media (desviación estándar) de las variables clínicas fueron: % de hemoglobina-A1c 9,22 (1,58); glucosa plasmática en ayunas (mmol/L) 12,03 (3,62), y colesterol total (mmol/L) 4,90 (1,1). La media del total de los costes directos sanitarios por paciente 6 meses antes y después de iniciar el tratamiento con insulina fue de 639€ y 1.110€ respectivamente. Los costes medios totales a los 6 meses del inicio de la insulinoterapia comprendieron: costes de ingresos hospitalarios (30,5%; 339€), insulina (16,2%; 180€), asistencia en servicios de atención primaria (14,3%; 159€), monitorización de glucosa en sangre (13,8%; 153€), asistencia por parte de especialistas (13,3%; 148€), antidiabéticos orales (7,8%; 87€) y otros tratamientos relacionados con la diabetes (3,9%; 43€).

Conclusiones

Los resultados clínicos de este grupo de pacientes con DM2 mejoraron tras iniciar terapia con insulina. Esta mejoría se acompañó de aumentos en la utilización de recursos y de costes directos sanitarios durante los 6 primeros meses de insulinoterapia.

Palabras clave:
Costes sanitarios
Terapia con insulina
Diabetes mellitus
Tipo 2
Estudio prospectivo
España
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Copyright © 2011. Sociedad Española de Endocrinología y Nutrición
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