Ricardo Sánchez

ORCID: 0000-0002-7540-4734
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About
Contact & Profiles
Research Areas
  • Cancer survivorship and care
  • Cervical Cancer and HPV Research
  • Health Systems, Economic Evaluations, Quality of Life
  • Schizophrenia research and treatment
  • Social Sciences and Policies
  • Comparative International Legal Studies
  • Childhood Cancer Survivors' Quality of Life
  • Dialysis and Renal Disease Management
  • Finance, Taxation, and Governance
  • Health and Medical Education
  • Comparative constitutional jurisprudence studies
  • Genital Health and Disease
  • Legal processes and jurisprudence
  • Administrative Law and Governance
  • Neutropenia and Cancer Infections
  • Bipolar Disorder and Treatment
  • Global Cancer Incidence and Screening
  • Child and Adolescent Psychosocial and Emotional Development
  • Palliative Care and End-of-Life Issues
  • Gastric Cancer Management and Outcomes
  • Ethics and bioethics in healthcare
  • Psychology Research and Bibliometrics
  • Regional Development and Innovation
  • Breast Cancer Treatment Studies
  • Optimism, Hope, and Well-being

Universidad Nacional de Colombia
2016-2025

Instituto Nacional de Cancerología
2015-2024

Institut Català d'Ornitologia
2024

Institut Català d'Oncologia
2024

Instituto Nacional de Cancerología
2024

Demos
2023

Acciona (Spain)
2023

VA Caribbean Healthcare System
2023

Universidad Libre de Colombia
2023

Research Institute Hospital 12 de Octubre
2023

This article shows the mayor issues related with validation of scales applied in health research and illustrates steps this process. Concepts selection items, translation, validity, reliability usefulness are discussed article.

10.1590/s0124-00642004000300006 article EN Revista de Salud Pública 2004-11-01

Background: Breast‐conserving surgery (BCS) is one of the major surgical advances in breast cancer treatment. This study evaluated oncological outcomes BCS patients with nonmetastatic at a referral center medium‐resource country between 2013 and 2019. Methods: An observational, analytical, retrospective cohort was conducted on stage I–IIIC treated Instituto Nacional de Cancerología (Bogotá, Colombia) from September to March Demographic data, tumor...

10.20944/preprints202502.0504.v1 preprint EN 2025-02-07

Tuberculosis (tb) remains a significant public health challenge, disproportionately impacting vulnerable groups, particularly indigenous populations. Objetive To investigate the epidemiological behavior of tb among communities in Puerto Nariño, Amazonas. Materials and Methods Descriptive cross-sectional study across 23 communities, employing an active case-finding approach through house-to-house medical consultations. Respiratory symptomatic (rs) individuals, defined as those with cough any...

10.15446/rsap.v27n1.117145 article EN Revista de Salud Pública 2025-01-01

Objetivo: Desarrollar un instrumento para medir la percepción de los pacientes sobre integración en atención ruta cardio cerebrovascular. Métodos: Se diseñó a partir una búsqueda sistemática y libre literatura identificar escalas encuestas que miden el cuidado salud. seleccionaron ítems evaluaran constructo integración, aplicables contexto colombiano útiles acciones mejora calidad, posteriormente, se desarrolló instrumento. Un panel expertos evaluó primera versión analizar validez contenido....

10.17533/udea.rfnsp.e357617 article ES cc-by-nc-sa Revista de la Escuela Nacional de Salud Pública 2025-01-01

Background: Breast-conserving surgery (BCS) is one of the major surgical advances in breast cancer treatment. This study evaluated oncological outcomes BCS patients with non-metastatic at a referral center medium-resource country between 2013 and 2019. Methods: An observational, analytical, retrospective cohort was conducted on stage I–IIIC treated Instituto Nacional de Cancerología (Bogotá, Colombia) from September to March Demographic data, tumor characteristics, treatment types, survival...

10.3390/cancers17071131 article EN Cancers 2025-03-28

OBJECTIVE: Characterize diagnosis and treatment of breast cancer in Bogota, Colombia examine the extent determinants patient delay. MATERIAL AND METHODS: Using a census approach we identified 1 106 women with cancer. Information was gathered through personal interviews review medical records. Patient delay defined as time elapsed from first symptoms to initial consultation. RESULTS: More than 80% (902) consulted due symptoms; majority had advanced-stage disease. established 20.3% main...

10.1590/s0036-36342009000500004 article EN cc-by-nc-sa Salud Pública de México 2009-10-01

Background Infection with multiple types of human papillomavirus (HPV) is one the main risk factors associated development cervical lesions. In this study, samples collected from 1,810 women diverse sociocultural backgrounds, who attended to their screening program in different geographical regions Colombia, were examined for presence lesions and HPV by Papanicolau testing DNA PCR detection, respectively. Principal Findings The negative binomial distribution model used study showed...

10.1371/journal.pone.0014705 article EN cc-by PLoS ONE 2011-02-17

Analysing human papillomavirus (HPV) viral load is important in determining the risk of developing cervical cancer (CC); most knowledge to date regarding HPV and lesions has been related HPV-16. This study evaluated association between six prevalent high-risk types Colombia intraepithelial neoplasia (CIN) frequency. 114 women without CIN 59 having confirmed by colposcopy, all them positive conventional PCR for infection initial screening, were included study. Samples tested determine copy...

10.1186/s12885-015-1126-z article EN cc-by BMC Cancer 2015-03-04

Abstract As malaria control programmes concentrate their efforts towards elimination a better understanding of transmission patterns at fine spatial resolution units becomes necessary. Defining that consider heterogeneity, human movement and migration will help to set up achievable milestones guide the creation efficient operational administrative units. Using combination genetic epidemiological data we defined unit as area contributing 95% cases diagnosed catchment facility located in town...

10.1038/s41598-020-60676-1 article EN cc-by Scientific Reports 2020-02-28

PURPOSE Breast cancer care requires a multimodal approach and multidisciplinary team who must work together to obtain good clinical results. The fragmentation of can affect the breast care; however, it has not been measured in low-resource setting. aim this study was identify care, geographic variation its association with 4-year overall survival (OS), costs for patients enrolled Colombia's contributory health system. MATERIALS AND METHODS A retrospective cohort conducted using...

10.1200/go.22.00393 article EN cc-by-nc-nd JCO Global Oncology 2023-05-01

10.1016/s1053-0770(98)90326-3 article EN Journal of Cardiothoracic and Vascular Anesthesia 1998-04-01

To assess cost-effectiveness of conventional cytology and HPV DNA testing for cervical-cancer screening in Colombia.The National Cancer Institute Colombia (NCIC) 2007 developed a Markov model on the natural history cervical cancer; no screening, cytology, were compared. Only direct costs used. Outcomes comprise cancer mortality, years life saved, lifetime costs. Discounted incremental ratios estimated sensitivity analyses conducted key parameters.Depending strategy 69-81% mortality reduction...

10.1590/s0036-36342008000400005 article EN cc-by-nc-sa Salud Pública de México 2008-08-01

Bloodstream infection by Candida species has a high mortality in Latin American countries. The aim of this study was to describe the characteristics patients with documented bloodstream infections caused third level hospitals and determine risk factors for in-hospital-mortality.

10.1016/j.bjid.2014.06.009 article EN cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2014-09-01

El cáncer gástrico es un problema de salud pública. Las cifras mortalidad y supervivencia son impresentables en nuestro país. En Colombia no existe ningún programa ni estrategias diagnóstico temprano, tampoco priorizado como salud. Los trabajos existentes demuestran que la mayoría los pacientes cuando diagnosticados presentan estadios avanzados.
 Un 90 % canceres gástricos se consideran consecuencia largo proceso inflamatorio sobre mucosa gástrica. La infección por Helicobacter pylori...

10.22516/25007440.394 article ES cc-by-nc-nd Revista Colombiana de Gastroenterología 2019-07-02

Fungemia in hematologic malignancies (HM) has high mortality. This is a retrospective cohort of adult patients with HM and fungemia between 2012 2019 institutions Bogotá, Colombia. The epidemiological, clinical, microbiological characteristics are described, risk factors related to mortality analyzed. One hundred five mean age 48 years (SD 19.0) were identified, 45% acute leukemia 37% lymphomas. In 42%, the was relapsed/refractory, 82% ECOG > 3, 35% received antifungal prophylaxis; 57%...

10.3390/jof9040400 article EN cc-by Journal of Fungi 2023-03-24

In the north of Caldas, Colombia, febrile syndromes with positive Weil-Felix reactions have been reported as Murine typhus to national health authorities. We used indirect immunofluorescence assay (IFA) serial paired samples confirm diagnosis murine in 14 120 patients a compatible syndrome.

10.4269/ajtmh.2008.78.321 article EN American Journal of Tropical Medicine and Hygiene 2008-02-01

The rehospitalization of patients with mental disorders is common, rates up to 80% observed in these patients. This phenomenon negatively impacts families, patients, and the health care system. Several factors have been associated an increased likelihood rehospitalization. study was aimed at determining frequency a psychiatric clinic. We performed prospective cohort 361 who were hospitalized Clinic Our Lady Peace Bogota, Colombia from August-December 2009. calculated incidence risk using Cox...

10.1186/1471-244x-14-161 article EN cc-by BMC Psychiatry 2014-06-02

<b><i>Introduction:</i></b> A new generation of hemodialysis (HD) membranes called medium cut-off (MCO) possesses enhanced capacities for middle molecule clearance, which have been associated with adverse outcomes in this population. These improvements could potentially positively impact patient-reported (PROs). <b><i>Objective:</i></b> The objective study was to evaluate the MCO on PROs a cohort HD patients Colombia....

10.1159/000508803 article EN cc-by-nc-nd Blood Purification 2020-11-11

Gastric cancer (GC) is the fifth most frequent malignancy worldwide and has a high mortality rate related to late diagnosis. Although gold standard for GC diagnosis endoscopy with biopsy, nonetheless, it not cost-effective invasive patient. The Human leukocyte antigen G (HLA-G) molecule checkpoint of immune response. Its overexpression in associated evasion, metastasis, poor prognosis, lower overall survival. We evaluate plasma levels soluble HLA-G, (sHLA-G) patients benign gastric...

10.1038/s41598-023-40132-6 article EN cc-by Scientific Reports 2023-08-12

An interview tool, Diagnostic Interview for Genetic Studies (DIGS 3.0), was translated into Spanish application in studies of psychiatric disorders Colombia. Two translations the original English version DIGS were prepared and back-translated English. A review committee verified linguistic cultural equivalence translations. The evaluator test-retest reliability assessed calculating Cohen's kappa samples 65 91 patients respectively. proved valid both appearance content. confidence interval...

10.7705/biomedica.v24i1.1249 article EN publisher-specific-oa Biomédica 2004-03-01
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