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Rev Med Inst Mex Seguro Soc ; 59(2): 141-150, 2021 Jun 14.
Article in Spanish | MEDLINE | ID: mdl-34232007

ABSTRACT

BACKGROUND: Several studies have evaluated the association between a history of type 2 diabetes (T2D) and risk of breast cancer (BC), with controversial results. However, information regarding the population-attributable risk percent (PAR%) remains scarce. Objective: To estimate the association and the PAR% for BC and T2D, lifestyle and gynecologic factors in women in Mexico City. METHODS: This case-control study was performed from May-December 2020. Women >40 years of age, from Mexico City, with a confirmed diagnosis for BC were included as cases. Controls were women with a BIRADS 1 or 2 mammography or an ultrasound clear of any BC suggestive findings. RESULTS: A total of 134 cases and 134 controls were included. A higher risk for BC was identified among women who did not perform routine physical activity and those who had a history of hormonal contraceptive use > 5 years. The use of hormone replacement therapy (HRT) was associated with an odds ratio (OR) of 5.0 (p = 0.22) in the first model. After adjustment, HRT was associated with an OR of 2.92 (p=0.492) in the second and an OR of 3.6 (p = 0.753) in the third model. T2D was associated with an OR of 1.04 (p = 0.96) in the first model; an OR of 0.65 (p = 0.65) in the second model and an OR of RMa 0.75(p = 0.79) for the third model. CONCLUSION: In this case-control study, there was no significant association identified between a T2D diagnosis and BC.


INTRODUCCIÓN: diversas investigaciones han evaluado el riesgo de cáncer de mama (CaMa) asociado a diabetes tipo 2 (DT2) con resultados inconsistentes. Pocas investigaciones han evaluado el porcentaje de riesgo atribuible a la población (PAR%). OBJETIVO: estimar la asociación y el PAR% para CaMa por DT2, así como los factores del estilo de vida y ginecológicos en mujeres de la Ciudad de México. MÉTODOS: estudio de casos y controles, realizado de mayo a diciembre de 2020. Se incluyeron mujeres > 40 años, de la Ciudad de México, con diagnóstico confirmado de CaMa. Los controles fueron mujeres con una mastografía BIRADS 1 o 2, o ultrasonido mamario sin datos sugestivos de CaMa. RESULTADOS: se incluyeron en total 134 casos y 134 controles. Se identificó un mayor riesgo de CaMa en aquellas mujeres que no realizan actividad física y con el uso de anticonceptivos > 5 años. El uso de terapia de reemplazo hormonal (TRH) se asoció con una razón de momios ajustada (RMa) de 5.0, p = 0.22 en el modelo 1. Conforme se ajustan los modelos, la TRH para el modelo 2 tuvo una RMa de 2.92, p = 0.492 y en el modelo 3 una RMa de 3.6 p = 0.753. La presencia de diabetes se asoció a una RMa de 1.04, p = 0.96 en el modelo 1; RMa de 0.65, p = 0.65 en el modelo 2 y una RMa de 0.75, p = 0.79 en el modelo 3. CONCLUSIONES: en este estudio de casos y controles no se encontró asociación entre el diagnóstico de DT2 y CaMa.


Subject(s)
Breast Neoplasms , Diabetes Mellitus, Type 2 , Breast Neoplasms/epidemiology , Breast Neoplasms/etiology , Case-Control Studies , Diabetes Mellitus, Type 2/diagnosis , Diabetes Mellitus, Type 2/epidemiology , Diabetes Mellitus, Type 2/etiology , Female , Humans , Mexico/epidemiology , Risk Factors
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