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Xavier Sánchez Choez, PhD.


Research group: Assessment of health technologies and health economics

Areas of reseach: Health policy evaluation / Health economics / Health technology evaluation


Investigacin actual  Current reserch: 

  • Health technology assessment
  • Rational use of medicines
  • Economic evaluations in health
  • Pharmaco-economics


Research projects (PUCE):

Eficiencia en la atención de patologías comunes en primer nivel de atención en salud.

Appropriateness and adequacy of antibiotic prescription for upper respiratory tract infections in ambulatory health care centers in Ecuador.


Estudios  Education: 


  • 2021. Ph.D. in Epidemiology and Public Health. Universidad Alcalá de Henares. Madrid, Spain. 
  • 2016. Master in Health and Drug Economics. Universidad Pompeú Fabra. Barcelona, Spain.  
  • 2013. Specialist in Health Technology Assessment. Instituto de Efectividad Clínica Argentina.
  • 2011. Specialist in Family Medicine. Pontificia Universidad Católica del Ecuador.
  • 2006. Medicine and General Surgery. Universidad Central del Ecuador.


Cargo actual  Current position: 


  • Principal Investigator at the Center for Research on Health in Latin America.
  • Associate Professor 3, School of Medicine. Pontificia Universidad Católica del Ecuador.      
  • Professor of the Master in Business Administration - Mention in Health Services Administration. Pontificia Universidad Católica del Ecuador.
  • Postgraduate Professor (Family Medicine), School of Medicine. Pontificia Universidad Católica del Ecuador.


Publicaciones recientes  Recent publications: 


  • Sánchez X, Calderón N, Solis O, Jimbo-Sotomayor R. (2023). Antibiotic Prescription Patterns in Children Under 5 Years of Age With Acute Diarrhea in Quito-Ecuador. Journal of Primary Care & Community Health. 2023;14.
  • Sánchez, X., Moreno, A., Jimbo-Sotomayor, R., Armijos, L., Viloria, A. (2022) Soft-Tissue Sarcomas in Adults in Ecuador in the Period 2010–2020. Sarcoma, vol. 2022, Article ID 1391537.
  • Armijos, L., Tello, B., Sevilla, C., Cano, I., Fonseca, J., Vivas, L., Rivadeneira, M., Jimbo, R., Sánchez, X., Santillán, N., Espín, I.  (2022). Development of a web-based tool –The Score Bebé ®– for enhancing neonatal risk stratification: A nationwide retrospective study. In: Jay Kalra and Nancy Lightner (eds) Healthcare and Medical Devices. AHFE (2022) International Conference. AHFE Open Access, vol 51. AHFE International, USA.
  • Jimbo-Sotomayor, R., Watts, E., Armijos, L., Sriudomporn, S., Sánchez, X., Echeverria, A., Whittembury, A., Patenaude, B. (2022). Return on Investment of 10-Valent Pneumococcal Conjugate Vaccine in Ecuador From 2010 to 2030. Value in Health Regional Issues 31, 148-154. doi:
  • Acosta-Vargas, P., Dueñas-Espín, I., Armijos, L., Fonseca, J., Santillán, N., Jimbo, R., Rivadeneira, M.F., Xánchez, X., Sevilla, C., Tello, B. and Vivas, L. (2021). Challenges of Web Accessibility in a Health Application to Predict Neonatal Mortality – The Score Bebe ®. In: Nunes I.L. (eds) Advances in Human Factors and System Interactions. AHFE 2021. Lecture Notes in Networks and Systems, vol 265. Springer, Cham.
  • ISARIC Clinical Characterisation Group (2021). COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study. Infection, 1–17. Advance online publication.
  • Sánchez, X., Orrico, M., Morillo, T., Manzano, A., Jimbo, R. and L. Armijos (2021). Reducing unnecessary antibiotic prescription through implementation of a clinical guideline on self-limiting respiratory tract infections. PLOS ONE 16(4): e0249475.
  • Sánchez Choez, X., Loaiza Martínez, M., Vaca Tatamuez, V., López Peña, M., Manzano Pasquel, A., & Jimbo Sotomayor, R. (2021). Medical Cost of Upper Respiratory Tract Infections in Children in Ambulatory Care. Value in Health Regional Issues, 26, 1–9.
  • Pritchard, M. G., ISARIC Clinical Characterisation Group (2020). COVID-19 symptoms at hospital admission vary with age and sex: ISARIC multinational study. medRxiv, 2020.2010.2026.20219519.
  • Sánchez, X., Landázuri, A., Londo, P., Manzano, A., Moreno Roca, A., & Jimbo, R. (2020). Knowledge, Attitudes and Practices in Antibiotic Use in Family Medicine Students. Journal of Primary Care & Community Health, 11, 215013272098475. 
  • Jimbo-Sotomayor, R., Armijos-Acurio, L., Proaño-Espinosa, J., Segarra-Galarza, K., & Sánchez-Choez, X. (2020). Morbidity and mortality due to pneumococcal disease in children in Ecuador from 2005 to 2015. Journal of Global Infectious Diseases, 12(3), 124. 
  • Jimbo Sotomayor, R., Toscano, C. M., Sánchez Choez, X., Vilema Ortíz, M., Rivas Condo, J., Ghisays, G., Haneuse, S., Weinberger, D. M., McGee, G., & de Oliveira, L. H. (2020). Impact of pneumococcal conjugate vaccine on pneumonia hospitalization and mortality in children and elderly in Ecuador: Time series analyses. Vaccine, 38(45), 7033–7039. 
  • Jimbo Sotomayor, R., Armijos Acurio, L., Sánchez Choez, X., Vilema Ortiz, M., Ghisays, G., Moyota Quinzo, D., & Moreta Colcha, F. (2019). Missed opportunities of vaccination in primary health care establishments in Ecuador. Vacunas (English Edition), 20(2), 46–52. 
  • García, M., Armijos Acurio, M. L., Sotomayor, R. J., Sanchez, X., & Guijarro, S. (2019). Analysis of births, abortions and maternal mortality in adolescents in Ecuador from 2013 to 2016. International Journal of Pediatrics and Adolescent Medicine. 
  • Sánchez Choez, X., Armijos Acurio, M. L., & Jimbo Sotomayor, R. E. (2018). “Appropriateness and adequacy of antibiotic prescription for upper respiratory tract infections in ambulatory health care centers in Ecuador.” BMC Pharmacology and Toxicology, 19(1), 46. 
  • Pesantez Ríos, G., Jimbo Sotomayor, R., Sánchez Choez, X., Valencia, C., Curatolo, P., & Pesantez Cuesta, G. (2018). Esclerosis tuberosa en Ecuador. Reporte de serie de casos. Neurología Argentina, 10(2), 66–71.  



  • Acurio, C., Barreiro, P., Cstro, K., García, M., Jimbo, R., Maldonado, D., Palacios, S., Ramadan, R., Sánchez, X., & Tello, B. (2020). Relación médico–paciente: Experiencias de comunicación y relatos de medicina narrativa (primera). Centro de Publicaciones PUCE.


Redes  Orcid: