6. Biblioteca del Centro Centroamericano de Población
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El Centro Centroamericano de Población (CCP) es un centro de investigaciones de la Universidad de Costa Rica, establecido inicialmente en 1993 como un Programa adscrito a la Escuela de Estadística.
El CCP tiene un área de acción multidisciplinaria en la investigación, capacitación y diseminación de información en población con un ámbito Centroamericano.
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De la Fuente de la Hispanidad 100 este, 100 norte y 100 este.
San Pedro de Montes de Oca.
Centro Centroamericano de Población,
Universidad de Costa Rica
San José 2060, Costa Rica.
Correo electrónico: ccp@ucr.ac.cr
Teléfonos:
(506) 2511-1452,
(506) 2511-1450,
(506) 2511-1716 (Biblioteca)
San Pedro de Montes de Oca.
Centro Centroamericano de Población,
Universidad de Costa Rica
San José 2060, Costa Rica.
Correo electrónico: ccp@ucr.ac.cr
Teléfonos:
(506) 2511-1452,
(506) 2511-1450,
(506) 2511-1716 (Biblioteca)
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Item Interethnic differences in the accuracy of anthropometric indicators of obesity in screening for high risk of coronary heart disease(International Journal of Obesity, 33(5), 2009) Herrea, VM.; Casas, Juan P.; Miranda, JJ.; Perel, P.; Pichardo, R.; González, A.; Sánchez, José R.; Ferreccio, Catterina.; Aguilera, X.; Silva, E.; Oróstegui, Myriam; Gómez, LF.; Chirinos, JA.; Lezama, Medina J.; Pérez, Cynthia M.; Suárez, E.; Ortiz. AP.; Rosero Bixby, Luis; Schapochnik, Noberto; Ortiz, Zulma; Ferrante, Daniel; Diaz, M.; Bautista, LE.Obesity is a recognized risk factor for the development of cardiovascular diseases and for allcause mortality among ethnic groups in the United States.1,2 Also among Latin Americans, that is, Hispanics living in their country of origin, obesity doubles the risk of coronary heart disease (CHD)3 and seems to contribute to an excess of 18 to 49% in the risk of coronary events.4 In view of the large impact of obesity on cardiovascular risk, anthropometric indicators of obesity are commonly used as a tool to identify individuals and populations at high risk of cardiovascular events. Body mass index (BMI) is a measure of overall obesity, whereas waist circumference (WC) and waist-to-hip ratio (WHR) are used as indicators of abdominal obesity. Although these obesity indicators have been independently associated with CHD incidence and mortality in different populations,5-7 several investigators and public health organizations have recently questioned whether cut points derived from Whites from Europe and the United States are appropriate for use in other populations.8-10 For instance, the World Health Organization (WHO) has recently suggested lowering BMI action cut points to 23 and 27.5 kg/m2 for Asians, 8 and the International Diabetes Federation’s guidelines for assessing metabolic syndrome recommends the use of South Asian’s WC cut points for Latin Americans and makes no recommendation for cut points among Blacks from the United States.11 In this study we used data from six Latin-American countries and from the United States National Health and Nutrition Examination Survey (NHANES) to compare the accuracy of BMI, WC and WHR, that is, their ability to correctly classify individuals as having a high or a low risk of CHD.Item Diabetes mellitus en adultos mayores costarricenses(Población y Salud en Mesoamérica. Revista Electrónica, Vol. 5(1), artículo 2, 2007) Brenes Camacho, Gilbert; Rosero Bixby, LuisPoblación y Salud en Mesoamérica - Volumen 5, número 1, artículo 2, jul - dic 2007 Número especial CRELES - Costa Rica: Estudio de Longevidad y Envejecimiento Saludable http://ccp.ucr.ac.cr/revista/ 2Diabetes mellitus en adultos mayores costarricenses1Gilbert Brenes-Camacho2, Luis Rosero-Bixby3RESUMEN El propósito del artículo es describir la prevalencia de la diabetes mellitus (DM) entre los adultos mayores costarricenses. Se analiza la magnitud de la prevalencia, los problemas de medición de la misma, así como los factores asociados con la enfermedad, la enfermedad controlada, y el tener niveles altos de hemoglobina glicosilada (HbA1C) entre la población sin diagnóstico previo de DM. Una cuarta parte de los adultos mayores de Costa Rica padecen de DM y cerca de la mitad de los que la padecen, no la tienen controlada. Los factores asociados con la prevalencia de la enfermedad son los usuales destacados por la literatura científica: actividad física, obesidad e historia familiar de DM. Se halla evidencia de un posible problema de acceso diferencial a servicios de control de DM, ya que los adultos mayores que habitan fuera de la gran área metropolitana de San José tienen un riesgo menor de tener controlada su enfermedad. Los adultos mayores sin pensión también tienen un riesgo mayor de tener niveles altos de HbA1C.Item X-ray screening seems to reduce gastric cancer mortality by half in a community-controlled trial in Costa Rica(British Journal of Cancer 97, 2007) Rosero Bixby, Luis; Sierra Ramos, RafaelaX-ray screening of gastric cancer is broadly used in Japan, although no controlled trial has proved its effectiveness. This study evaluates the impact of an X-ray screening demonstrative intervention to reduce gastric cancer mortality in a Costa Rican region. The evaluation follows a quasi-experimental, community-controlled design, with measures before and after. About 7000 individuals participated by invitation in the two-wave screening programme. X-ray screening was followed by videoendoscopy and gastric biopsies. Treatment included resection with or without lymph node dissection. Comparisons with two control groups estimate that gastric cancer mortality was halved in the period from 2 to 7 years after the first screening visit. Validity of X-rays as used in this intervention had 88% sensitivity, 80% specificity, and 3% predictive value for individuals with two screening visits. Incidence in the screened group increased up to four times. Case survival was 85% in the intervention group after 5 years, compared to 12% among the controls before the intervention and 35% among the controls in the same region after the intervention. Although X-ray mass screening seems able to reduce stomach cancer mortality, its high cost may be an obstacle for scaling up this intervention in a nonrich country like Costa Rica.Item Factors associated with hypertension prevalence, unawareness and treatment among Costa Rican elderly(BMC Public Health 8(275), 2008) Méndez Chacón, Ericka; Santamaría Ulloa, Carolina; Rosero Bixby, LuisBackground: Reliable information on the prevalence of hypertension is crucial in the development of health policies for prevention, control, and early diagnosis of this condition. This study describes the prevalence of hypertension among Costa Rican elderly, and identifies co-factors associated with its prevalence, unawareness and treatment. Methods: The prevalence of hypertension is estimated for the Costa Rican elderly. Measurement error is assessed, and factors associated with high blood pressure are explored. Data for this study came from a nationally representative sample of about 2,800 individuals from CRELES (Costa Rica: Longevity and Healthy Aging Study). Two blood pressure measures were collected using digital monitors. Self reprts of previous diagnosis, and medications taken were also recorded as part of the study. Results: No evidence of information bias was found among interviewers, or over time. Hypertension prevalence in elderly Costa Ricans was found to be 65% (Males = 60%, Females = 69%). Twenty-five percent of the studied population did not reprt previous diagnoses of hypertension, but according to our measurement they had high blood pressure. The proportion of unaware men is higher than the proportion of unaware women (32% vs. 20%). The main factors associated with hypertension are: age, being overweight or obese, and family history of hypertension. For men, current smokers are 3 times more likely to be unaware of their condition than non smokers. Both men and women are less likely to be unaware of their condition if they have a family history of hypertension. Those women who are obese, diabetic, have suffered heart disease or stroke, or have been home visited by community health workers are less likely to be unaware of their hypertension. The odds of being treated are higher in educated individuals, those with a family history of hypertension, elderly with diabetes or those who have had heart disease. Conclusion: Sex differences in terms of hypertension prevalence, unawareness, and treatment in elderly people have been found. Despite national programs for hypertension detection and education, unawareness of hypertension remains high, particularly among elderly men. Modifiable factors identified to be associated with prevalence such as obesity and alcohol intake could be used in educational programs aimed at the detection and treatment of those individuals who have the conditionItem Disease and weight loss: a prospective study of middle-aged and older adults in Costa Rica and England(Salud Pública de México; Volumen 57, Número 4, 2015) Blue, Laura; Rosero Bixby, Luis; Goldman, NoreenObjective. To determine whether disease predicts weight loss in population-based studies, as this may confound the relationship between weight and mortality. Materials and methods. We used longitudinal data from the Costa Rican Longevity and Healthy Aging Study (CRELES) and the English Longitudinal Study of Ageing (ELSA). We defined two overlapping outcomes of measured weight loss between waves: >1.0 point of body mass index (BMI) and >2.0 BMI points. Logistic regression models estimated the associations with disease, adjusting for age (range 52-79), sex, smoking, and initial BMI. Results. In ELSA, onset of diabetes, cancer, or lung disease is associated with loss >2.0 points (respectively, OR=2.25 [95%CI: 1.34-3.80]; OR=2.70 [95%CI: 1.49-4.89]; OR=1.82 [95%CI: 1.02-3.26]). In CRELES, disease-onset reprts are not associated with weight loss at 5% significance, but statistical power to detect associations is poor. Conclusion. Although it is known that some diseases cause weight loss, at the population level these associations vary considerably across samples. Objetivo. Determinar si las enfermedades predicen pérdida de peso a partir de encuestas poblacionales, debido a que esto podría confundir la relación entre peso y mortalidad. Material y métodos. Se utilizaron datos longitudinales de Costa Rica: Estudio de Longevidad y Envejecimiento Saludable (CRELES) y Estudio Longitudinal de Envejecimiento en Inglaterra (ELSA, por sus siglas en inglés). Se definieron dos indicadores de resultado no excluyentes de pérdida de peso entre rondas: >1.0 punto de índice de masa corporal (IMC) y >2.0 puntos de IMC. Las asociaciones de interés se estimaron con modelos de regresión logística, con controles para la edad (rango 52-79), sexo, tabaquismo actual e IMC inicial. Resultados. En el ELSA, la incidencia de diabetes, cáncer o enfermedad pulmonar está asociada con pérdida de >2.0 puntos de IMC (respectivamente: OR=2.25 [IC95%: 1.34-3.80]; OR=2.70 [IC95%: 1.49-4.89]; OR=1.82 [IC95%: 1.02-3.26]). En el CRELES, el reprte de diagnóstico de enfermedades no muestra asociación significativa a 5% con pérdida de peso, pero el poder estadístico de la muestra para detectar asociaciones es limitado. Conclusión. Aunque es conocido que ciertas enfermedades causan pérdida de peso, estas asociaciones a nivel poblacional varían considerablemente entre encuestas.Item Altitude and regional gradients in chronic kidney disease prevalence in Costa Rica : data from the Costa Rican longevity and healthy aging study(Tropical Medicine & International Health; Volumen 21, Número 1, 2016) Harhay, Meera N.; Harhay, Michael O.; Coto Yglesias, Fernando; Rosero Bixby, LuisObjectives Recent studies in Central America indicate that mortality attributable to chronic kidney disease (CKD) is rising rapidly. We sought to determine the prevalence and regional variation of CKD and the relationship of biologic and socio-economic factors to CKD risk in the older-adult population of Costa Rica. Methods We used data from the Costa Rican Longevity and Health Aging Study (CRELES). The cohort was comprised of 2657 adults born before 1946 in Costa Rica, chosen through a sampling algorithm to represent the national population of Costa Ricans >60 years of age. Participants answered questionnaire data and completed laboratory testing. The primary outcome of this study was CKD, defined as an estimated glomerular filtration rate (eGFR) <60 ml/min/1.73 m2. Results The estimated prevalence of CKD for older Costa Ricans was 20% (95% CI 18.5–21.9%). In multivariable logistic regression, older age (adjusted odds ratio [aOR] 1.08 per year, 95% CI 1.07–1.10, P < 0.001) was independently associated with CKD. For every 200 m above sea level of residence, subjects' odds of CKD increased 26% (aOR 1.26 95% CI 1.15–1.38, P < 0.001). There was large regional variation in adjusted CKD prevalence, highest in Limon (40%, 95% CI 30–50%) and Guanacaste (36%, 95% CI 26–46%) provinces. Regional and altitude effects remained robust after adjustment for socio-economic status. Conclusions We observed large regional and altitude-related variations in CKD prevalence in Costa Rica, not explained by the distribution of traditional CKD risk factors. More studies are needed to explore the potential association of geographic and environmental exposures with the risk of CKD.