Albornoz Toyohama, Roger Hiroshi

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Albornoz Toyohama, Roger Hiroshi
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Albornoz Toyohama, Roger Hiroshi
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Albornoz, Roger
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Universidad Peruana Unión
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  • Publicacion
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    Factors influencing student retention university students: an analysis of institutional reputation, social responsibility and loyalty
    (2025-03-19)
    Albornoz Toyohama, Roger Hiroshi  
    ;
    Mendigure-Hachircana, Ruth
    ;
    Haro Casildo, Sady Lourdes  
    ;
    Abanto Ramirez, Carlos Daniel  
    Introduction This study investigates the impact of institutional reputation (IR), social responsibility (SR) and student loyalty (LY) on student retention (RT) in university students. Methods Using a quantitative, non-experimental, cross-sectional design, 409 students of private universities, both domestic and foreign, were surveyed. Results Analysis using Partial Least Square Structural Equation Modeling (PLS-SEM) revealed that SR positively influences LY ( β = 0.218, p < 0.001) and RT ( β = 0.123, p = 0.006). LY showed a strong impact on RT ( β = 0.765, p < 0.001), whereas IR significantly influenced LY ( β = 0.556, p < 0.001). Contrary to expectations, no direct relationship was found between institutional reputation and retention. In addition, it was shown that SR had a positive effect on IR ( β = 0.531, p < 0.001). Conclusion Based on the results obtained, it is concluded that SR positively predicts LY, RT and IR, Ly positively predicts RT and IR LY, with significant implications for university management and research at this educational level.
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    Factors influencing student retention university students: an analysis of institutional reputation, social responsibility and loyalty
    (2026-04-28)
    Abanto Ramirez, Carlos Daniel  
    ;
    Albornoz Toyohama, Roger Hiroshi  
    ;
    Mendigure-Hachircana, Ruth
    ;
    Haro Casildo, Sady Lourdes  
    This dataset supports the article “Factors Influencing University Student Retention: An Analysis of Institutional Reputation, Social Responsibility, and Loyalty” and contains the empirical data used to examine determinants of student retention in higher education institutions. The data were collected through a quantitative research design using a structured questionnaire administered to university students. The dataset includes variables measuring institutional reputation, university social responsibility, student loyalty, and intention to remain enrolled, along with selected sociodemographic characteristics employed as control variables. Measurement items were adapted from previously validated scales in the academic literature to ensure reliability and construct validity. All responses were collected anonymously, and no personally identifiable information is included, in accordance with ethical research standards and data protection principles. The dataset has been cleaned and organized to facilitate replication, secondary analysis, and reuse. This resource is intended for researchers, educators, and policymakers interested in higher education management, student experience, retention strategies, educational marketing, and institutional social responsibility. It may be used for comparative studies across institutions or countries, methodological validation, or as a reference dataset for teaching quantitative analysis techniques. Users of this dataset are encouraged to cite the associated article when using the data for academic or professional purposes.
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    Retrospective analysis of the emergence of antibiotic-resistant Salmonella enterica infections in a level IV hospital from Lima, Peru
    (2021-12-17)
    Ruiz, Joaquim
    ;
    Flores-Paredes, Wilfredo
    ;
    Luque Chipana, Nestor Alejandro  
    ;
    Albornoz Toyohama, Roger Hiroshi  
    ;
    Rojas, Nayade
    This study retrospectively analysed the emergence of multidrug-resistant Salmonella enterica in a level IV hospital in Lima, Peru. A total of 64 S. enterica from January 2009 to June 2010 (Period 1, 24 isolates) and January 2012 to December 2014 (Period 2, 40 isolates) were included. Some 25 were from non-hospitalized and 39 from hospitalized patients. Antimicrobial susceptibility to 15 antimicrobial agents was established by automated methods. Most of the isolates were from blood (46.9%), urine (21.9%) and faeces (14.1%). There was a reduction in blood isolates in Period 2, while all the faecal isolates were from this period. In Period 1, only 3/24 (12.5%) isolates showed antibiotic resistance, whereas 25/39 isolates (64.1%) from Period 2 were antibiotic-resistant, with multidrug-resistant and extensively drug-resistant rates of 17.9% and 20.5%, respectively. Multidrug-resistant/extensively drug-resistant Salmonella isolates were introduced in the hospital in 2013, with Salmonella recovered from faeces from non-hospitalized patients suggested an increase in community-acquired multidrug-resistant/extensively drug-resistant Salmonella infections.
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    Evolution of Antimicrobial Resistance Levels of ESKAPE Microorganisms in a Peruvian IV-Level Hospital
    (2021-01-01)
    Flores-Paredes, Wilfredo
    ;
    Luque Chipana, Nestor Alejandro  
    ;
    Albornoz Toyohama, Roger Hiroshi  
    ;
    Rojas, Nayade
    ;
    Espinoza, Manuel
    BACKGOUND: spp.) are a frequent cause of severe infection, ranking among the most relevant causes of hospital infections. In Peru, few studies, often focused in a single ESKAPE microorganism, have been performed, but none providing an overall and comprehensive long-time analysis of the antibiotic resistance of ESKAPE microorganisms. In the present study, the evolution of antimicrobial resistance levels of ESKAPE microorganisms isolated during 2009 - 2010 (Period 1) and 2012 - 2014 (Period 2) in a IV-level hospital in Lima was analyzed. MATERIALS AND METHODS: ) were determined using automatic methods. RESULTS: showed significantly increased resistance to different cephalosporins, carbapenems and amoxicillin plus sulbactam. CONCLUSION: clone in the ICU is suspected. The isolation of ESKAPE and levels of antibiotic resistance levels have reduced over time.
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    Características clínicas y epidemiológicas de las muertes por dengue durante un brote en el norte del Perú
    (Instituto Nacional de Salud, 2023-03-31)
    Luque Chipana, Nestor Alejandro  
    ;
    Cilloniz, Catia
    ;
    Pons, María Jesus
    ;
    Donaires-Toscano, Fernando
    ;
    Albornoz Toyohama, Roger Hiroshi  
    Con el objetivo de describir las características clínicas y epidemiológicas de los pacientes fallecidos por dengue durante el 2017 en Piura, se realizó un estudio retrospectivo de revisión de 24 historias clínicas. El 67% de los casos fueron mujeres y tres (12,5%) estaban embarazadas. La diabetes (12,5%) y la hipertensión (16,7%) fueron las comorbilidades más frecuentes. Sólo en el 12,5% se reportó dengue previo.El tiempo transcurrido desde asistencia sanitaria hasta la muerte fue de 4,10 (DE: 5,34) días. Se hicieron transfusiones de glóbulos rojos en el 45,8% de los casos, plasma en el 25%, plaquetas en el 16,8% ycrioprecipitado en el 16,8%. También fueron frecuentes la terapia con ristaloides (91,7%) y el tratamiento con fármacos vasoactivos (70,8%). En conclusión, la mortalidad del dengue grave fue mayoritaria en las mujeres adultas y el tiempo de atención desde el primer establecimiento de salud hasta una unidad especializada fue prolongada.
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    EVOLUTION OF THE PREVALENCE AND ANTIMICROBIAL RESISTANCE AMONG Escherichia coli ISOLATED AS A CAUSE OF INFECTION IN PATIENTS ADMITTED TO A IV-LEVEL HOSPITAL IN LIMA, PERU
    (Brazilian Society of Parasitology, 2022-10-19)
    Flores-Paredes, Wilfredo
    ;
    Luque Chipana, Nestor Alejandro  
    ;
    Albornoz Toyohama, Roger Hiroshi  
    ;
    Rojas, Nayade
    ;
    Espinoza, Manuel
    The levels and evolution of antimicrobial resistance of Escherichia coli during 01/2009-06/2010 (Period 1), 01/2012-06-2013 (Period 2) and 07/2013-12/2014 (Period 3) were analyzed. Identification, susceptibility levels to 13 antibiotics and the presence of extendedspectrum β-lactamases (ESBLs) were determined. Overall, 9,918 microorganisms were isolated as a cause of infection. Of these 3,016 (30.4%) were E. coli, with 1,770 (59%), 992 (33%) and 254 (8%), from the Medicine and the Surgery Departments and the Intensive Care Unit (ICU), respectively. There was a significant increase (p=0.0002) of E. coli throughout considered periods. The isolates presented high levels of resistance (>60%) to cephalosporins, ciprofloxacin and cotrimoxazole, being only susceptible to imipenem (0.3% of resistance) and tigecycline. Overall the analysis of evolution of antimicrobial resistance showed that resistance to cephalosporins and amikacin significantly increased, while, the ones of piperacillintazobactam, cotrimoxazole and gentamicin had significantly decreased. Nevertheless, the ICU isolates showed an inverse scenario for cephalosporins. These findings agree with an increase of ESBLs on the Medicine (56% to 66%; p<0.0001) and on the Surgery (54% to 62%; p=0.0197) departments, with a parallel decrease in the ICU (76% to 68%). In summary, high levels of antimicrobial resistance have been reported among E. coli, with worrisome levels of ESBL. A continuous surveillance of antimicrobial resistance levels in the area is needed. KEY WORDS: Escherichia coli; antimicrobial resistance; cephalosporins
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  • Publicacion
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    Factors influencing student retention university students: an analysis of institutional reputation, social responsibility and loyalty
    (2026-04-28)
    Abanto Ramirez, Carlos Daniel  
    ;
    Albornoz Toyohama, Roger Hiroshi  
    ;
    Mendigure-Hachircana, Ruth
    ;
    Haro Casildo, Sady Lourdes  
    This dataset supports the article “Factors Influencing University Student Retention: An Analysis of Institutional Reputation, Social Responsibility, and Loyalty” and contains the empirical data used to examine determinants of student retention in higher education institutions. The data were collected through a quantitative research design using a structured questionnaire administered to university students. The dataset includes variables measuring institutional reputation, university social responsibility, student loyalty, and intention to remain enrolled, along with selected sociodemographic characteristics employed as control variables. Measurement items were adapted from previously validated scales in the academic literature to ensure reliability and construct validity. All responses were collected anonymously, and no personally identifiable information is included, in accordance with ethical research standards and data protection principles. The dataset has been cleaned and organized to facilitate replication, secondary analysis, and reuse. This resource is intended for researchers, educators, and policymakers interested in higher education management, student experience, retention strategies, educational marketing, and institutional social responsibility. It may be used for comparative studies across institutions or countries, methodological validation, or as a reference dataset for teaching quantitative analysis techniques. Users of this dataset are encouraged to cite the associated article when using the data for academic or professional purposes.
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