Examinando por Autor "Alvarez-Risco, Aldo"

Mostrando 1 - 20 de 50

Acceso abierto
“A Systematic Review of Earned Value Management Methods for Monitoring and Control of Project Schedule Performance: An AHP Approach “
(MDPI, 2022-11-17) Mayo-Alvarez, Luis; Alvarez-Risco, Aldo; Del-Aguila-Arcentales, Shyla; Sekar, M. Chandra; Yáñez, Jaime A.
“: Successful project management depends on ensuring the project’s objectives. Within these objectives, technical success is associated with achieving the expectations of the project baseline. The baseline of the project is made up of the definition of the scope (WBS), time (schedule) and costs (S curve) of the project. Directly, the project is expected to be technically successful if it manages to deliver its full scope on schedule and without associated cost overruns. Baseline performance management is how project managers track and control the progress of deliverables, timelines and associated costs. In a traditional approach, for waterfall-type projects that use the critical path paradigm, the baseline performance management tool par excellence is earned value management (EVM). Earned value management, in practice, works well when project costs are monitored and controlled; however, applying this approach to measure the status of the schedule presents serious inconsistencies. Over the last several decades, different variations of the original earned value have been developed to overcome some of these inconsistencies when used to measure project schedule status. Within these variations, we have the critical path earned value; the work in progress earned value; the critical path earned value and the work in progress; the earned schedule; and the critical path earned schedule. Each of these proposals tries to address some weakness of the original earned value management applied to time monitoring and control, for example, considering critical tasks as a focus on monitoring the progress of the schedule, solving the problem of task recognition late finishers, reporting schedule variances in time units and measuring adherence to the project’s schedule (P factor). Due to the exposed situation, it is necessary to determine which alternative of the versions of the original earned value is the most appropriate for the management of the project schedule, considering that there are several evaluation criteria that must be considered. In the present research, a systematic review and comparison of EVM and its variations for measuring project baseline schedule performance are performed to determine the most suitable methods for monitoring and controlling the project baseline schedule. For this purpose, the analytic hierarchy process (AHP) is used, and five comparison criteria are considered: schedule variation focused on critical tasks, recognition and measurement of the delay of tasks that finish late, schedule variation in time units, measurement of schedule adherence (P factor) and software support and development. The result of the AHP performed for comparing the methods shows that the best method for monitoring and controlling the project baseline schedule is the critical path earned schedule because it behaves adequately in comparison with the other methods for the evaluated comparison categories.“
Acceso abierto
“A Systematic Review of Earned Value Management Methods for Monitoring and Control of Project Schedule Performance: An AHP Approach “
(MDPI, 2022-11-17) Mayo-Alvarez, Luis; Alvarez-Risco, Aldo; Del-Aguila-Arcentales, Shyla; Sekar, M. Chandra; Yáñez, Jaime A.
“: Successful project management depends on ensuring the project’s objectives. Within these objectives, technical success is associated with achieving the expectations of the project baseline. The baseline of the project is made up of the definition of the scope (WBS), time (schedule) and costs (S curve) of the project. Directly, the project is expected to be technically successful if it manages to deliver its full scope on schedule and without associated cost overruns. Baseline performance management is how project managers track and control the progress of deliverables, timelines and associated costs. In a traditional approach, for waterfall-type projects that use the critical path paradigm, the baseline performance management tool par excellence is earned value management (EVM). Earned value management, in practice, works well when project costs are monitored and controlled; however, applying this approach to measure the status of the schedule presents serious inconsistencies. Over the last several decades, different variations of the original earned value have been developed to overcome some of these inconsistencies when used to measure project schedule status. Within these variations, we have the critical path earned value; the work in progress earned value; the critical path earned value and the work in progress; the earned schedule; and the critical path earned schedule. Each of these proposals tries to address some weakness of the original earned value management applied to time monitoring and control, for example, considering critical tasks as a focus on monitoring the progress of the schedule, solving the problem of task recognition late finishers, reporting schedule variances in time units and measuring adherence to the project’s schedule (P factor). Due to the exposed situation, it is necessary to determine which alternative of the versions of the original earned value is the most appropriate for the management of the project schedule, considering that there are several evaluation criteria that must be considered. In the present research, a systematic review and comparison of EVM and its variations for measuring project baseline schedule performance are performed to determine the most suitable methods for monitoring and controlling the project baseline schedule. For this purpose, the analytic hierarchy process (AHP) is used, and five comparison criteria are considered: schedule variation focused on critical tasks, recognition and measurement of the delay of tasks that finish late, schedule variation in time units, measurement of schedule adherence (P factor) and software support and development. The result of the AHP performed for comparing the methods shows that the best method for monitoring and controlling the project baseline schedule is the critical path earned schedule because it behaves adequately in comparison with the other methods for the evaluated comparison categories.“
Acceso abierto
Adaptation and Validation of a Monkeypox Concern Instrument in Peruvian Adults
(MDPI, 2022-09-28) Mamani-Benito, Oscar; Carranza Esteban, Renzo Felipe; Pichen Fernández, Juan; Apaza Tarqui, Edison Effer; Mejia, Christian R.; Alvarez-Risco, Aldo; Del-Aguila-Arcentales, Shyla; Yáñez, Jaime A.
La viruela del simio está causando gran preocupación en la sociedad por su gran poder infectivo y la posibilidad de que se convierta en una nueva pandemia. Este estudio tuvo como objetivo adaptar y validar la escala de preocupación por la viruela del simio en la población adulta peruana (EP-VIR-MONK). Se realizó un estudio transversal instrumental bajo un muestreo no probabilístico por conveniencia con 779 adultos de las tres regiones del Perú (costa, sierra y selva). El instrumento fue adaptado en base a un instrumento previamente validado relacionado con la preocupación que genera el COVID-19 en el Perú. La validez de contenido se calculó con el coeficiente V de Aiken, la estructura interna con análisis factorial confirmatorio y la confiabilidad con el coeficiente omega. La primera evidencia de validez de EP-VIR-MONK basada en su contenido, estructura interna, y confiabilidad en una muestra de adultos peruanos se presenta aquí. Por lo tanto, puede ser de ayuda para el manejo de la prevención de las alteraciones de la salud mental derivadas de la proliferación de la viruela del simio en el Perú.
Acceso abierto
Augmented reality for innovation: Education and analysis of the glacial retreat of the Peruvian Andean snow-capped mountains
(Elsevier B.V., 2023-09) Zapata-Paulini, Joselyn; Cabanillas-Carbonell, Michael; Iparraguirre-Villanueva, Orlando; Sierra-Liñan, Fernando; Baltozar-Clemente, Saul; Alvarez-Risco, Aldo; Yáñez, Jaime A.
Mountain glaciers are considered great reservoirs of water, and their importance lies in the fact that many of our ecosystems and numerous communities depend on them; Peru has one of the largest extensions of Andean snow-capped mountains, which have been affected by the decline in their glacier coverage and that is warned, will disappear due to environmental conditions and alterations in the current global temperature. This problem has increased due to ignorance, misinformation, indifference, and lack of solidarity on the part of the population who favors this discouraging situation. Taking advantage of the current technological immersion, in which we live, the development of a mobile application was proposed as a pedagogical resource to raise awareness among educational institutions about the glacial retreat of the Peruvian Andean snow-capped mountains, showing the current situation of some of the snow-capped mountains of the Andes that have suffered a greater impact, implementing augmented reality technology to obtain an interactive link. To provide greater detail of the situation, previous studies were carried out on glacial retreats in two Peruvian snow-capped mountains over the last 40 years, where it was found that, of the snow-capped mountains considered, Chicon had a decrease of 32.5% of its glacier cover, and Pumahuanca had a decrease of 56.9%. Such results are exposed within the application to provide realistic data on the glacial conditions of both Peruvian snow-capped mountains, as well as the consequences and conservation techniques to mitigate and cope with deglaciation. Taking into consideration that environmental education from an early age turns out to be key to forming an informed and participatory society about climate change.
Acceso abierto
Bibliometric Analysis of Current Status of Circular Economy during 2012–2021: Case of Foods
(MDPI, 2022-09-08) Del-Aguila-Arcentales, Shyla; Alvarez-Risco, Aldo; Carvache-Franco, Mauricio; Rosen, Marc A.; Yáñez, Jaime A.
Food is usually recognized as a limited resource in sustainability, recognized by the United Nations (UN) Sustainable Development Goal (SDG) 2, which aims to achieve zero hunger. It is expected that the circular economy (CE) can improve processes related to food production. The objective of the present study was to apply a bibliometric approach using VOSviewer visualization software as a research tool to analyze the relevant literature from the Scopus database in the field of circular economy and its relation to improvements in food issues throughout 2012–2021. A total of 1316 articles were analyzed. Italy was the most productive country with 313 articles, with Wageningen University & Research the organization with the most publications with 39 articles. The top 10 institutions originated from Italy, The Netherlands, France, and Denmark. Sustainability was the most productive journal with 107 articles. Bioresource Technology had the highest average citation frequency (44.68). The study helps initiate investigations to adapt the results obtained and create new strategies for increasing food circular economy efforts.
Acceso abierto
Bibliometric Analysis of Current Status of Circular Economy during 2012–2021: Case of Foods
(MDPI, 2022-09-08) Del-Aguila-Arcentales, Shyla; Alvarez-Risco, Aldo; Carvache-Franco, Mauricio; Rosen, Marc A.; Yáñez, Jaime A.
“Food is usually recognized as a limited resource in sustainability, recognized by the United Nations (UN) Sustainable Development Goal (SDG) 2, which aims to achieve zero hunger. It is expected that the circular economy (CE) can improve processes related to food production. The objective of the present study was to apply a bibliometric approach using VOSviewer visualization software as a research tool to analyze the relevant literature from the Scopus database in the field of circular economy and its relation to improvements in food issues throughout 2012–2021. A total of 1316 articles were analyzed. Italy was the most productive country with 313 articles, with Wageningen University & Research the organization with the most publications with 39 articles. The top 10 institutions originated from Italy, The Netherlands, France, and Denmark. Sustainability was the most productive journal with 107 articles. Bioresource Technology had the highest average citation frequency (44.68). The study helps initiate investigations to adapt the results obtained and create new strategies for increasing food circular economy efforts“
Acceso abierto
Comparison of the Antioxidant Power of Extracts of the Red vs. Yellow Nephelium lappaceum Variety
(MDPI, 2023-02-20) Diaz Rojas, Mariana; Alvarez-Risco, Aldo; Loáiciga González, Alejandra Eugenia; Arguedas Chaverri, Eduardo; Rodríguez Yebra, Lissette; Del-Aguila-Arcentales, Shyla; Yáñez, Jaime A.
Nephelium lappaceum L., also known as “Chinese mamon” (mamon chino) or “rambutan”, is an exotic fruit of tropical climate with a sweet flavor and aroma, which can be found in the territory of Costa Rica in the Brunca and Huetar Atlántica regions. For the comparison of antioxidants, different electronic tests were carried out with the red peel and the yellow peel of Nephelium lappaceum, taking ascorbic acid as a base. In addition, Nephelium lappaceum peels, due to their antioxidant properties, allowed the identification of the active components and their antioxidant activity by thin layer chromatography and DPPH tests. The results of these tests show the presence of flavonoids, coumarins, glycosides, and carotenoids, which are the primary metabolites of Nephelium lappaceum peels.
Acceso abierto
Comparison of the Antioxidant Power of Extracts of the Red vs. Yellow Nephelium lappaceum Variety
(MDPI, 2023-03-15) Diaz Rojas, Mariana; Alvarez-Risco, Aldo; Loáiciga González, Alejandra Eugenia; Arguedas Chaverri, Eduardo; Rodríguez Yebra, Lissette; Del-Aguila-Arcentales, Shyla; Yáñez, Jaime A.
“Abstract: Nephelium lappaceum L., also known as “Chinese mamon” (mamon chino) or “rambutan”, is an exotic fruit of tropical climate with a sweet flavor and aroma, which can be found in the territory of Costa Rica in the Brunca and Huetar Atlántica regions. For the comparison of antioxidants, different electronic tests were carried out with the red peel and the yellow peel of Nephelium lappaceum, taking ascorbic acid as a base. In addition, Nephelium lappaceum peels, due to their antioxidant properties, allowed the identification of the active components and their antioxidant activity by thin layer chromatography and DPPH tests. The results of these tests show the presence of flavonoids, coumarins, glycosides, and carotenoids, which are the primary metabolites of Nephelium lappaceum peels.“
Acceso abierto
Consumer Patterns of Sustainable Clothing Based on Theory of Reasoned Action: Evidence from Ecuador
(Sustainability (Switzerland), 2022-11-09) Leclercq-Machado, Luigi; Alvarez-Risco, Aldo; García-Ibarra, Verónica; Esquerre-Botton, Sharon; Morales-Ríos, Flavio; Anderson-Seminario, Maria de las Mercedes; Del-Aguila-Arcentales, Shyla; Davies, Neal M.; Yáñez, Jaime A.
Corporations need to understand the factors that influence purchase intention. The current study aimed to understand sustainable clothing patterns in Ecuador. A total of 343 Ecuadorian consumers completed an online survey; the results were analyzed with partial least squares structural equation modeling (PLS-SEM). As the outcome, attitude was predicted by perceived environmental knowledge (PEK) and environmental concern (EC). PEK and EC are positively correlated to attitudes towards purchasing sustainable clothing. Additionally, attitude mediated the relationship between these two variables and purchase intention. As measured by PEK, attitude is the most critical factor in determining purchase intention, based on importance performance map analysis (IPMA). The research findings may support firms’ marketing and selling strategies to demonstrate that their brands are environmentally green and generate greater consumer interest in current and future customers. The novelty of these findings is supported by the partial least squares structural equation modeling (PLS-SEM) technique results.
Acceso abierto
Consumer Patterns of Sustainable Clothing Based on Theory of Reasoned Action: Evidence from Ecuador
(Sustainability (Switzerland), 2022-11-09) Leclercq-Machado, Luigi; Alvarez-Risco, Aldo; García-Ibarra, Verónica; Esquerre-Botton, Sharon; Morales-Ríos, Flavio; Anderson-Seminario, Maria de las Mercedes; Del-Aguila-Arcentales, Shyla; Davies, Neal M.; Yáñez, Jaime A.
Corporations need to understand the factors that influence purchase intention. The current study aimed to understand sustainable clothing patterns in Ecuador. A total of 343 Ecuadorian consumers completed an online survey; the results were analyzed with partial least squares structural equation modeling (PLS-SEM). As the outcome, attitude was predicted by perceived environmental knowledge (PEK) and environmental concern (EC). PEK and EC are positively correlated to attitudes towards purchasing sustainable clothing. Additionally, attitude mediated the relationship between these two variables and purchase intention. As measured by PEK, attitude is the most critical factor in determining purchase intention, based on importance performance map analysis (IPMA). The research findings may support firms’ marketing and selling strategies to demonstrate that their brands are environmentally green and generate greater consumer interest in current and future customers. The novelty of these findings is supported by the partial least squares structural equation modeling (PLS-SEM) technique results.
Acceso abierto
COVID-19, Mental Health and Its Relationship with Workplace Accidents
(Tech Science Press, 2022-05-27) Del-Aguila-Arcentales, Shyla; Alvarez-Risco, Aldo; Villalobos-Alvarez, Diego; Carhuapoma-Yance, Mario; Yáñez, Jaime A.
“The general objective of this article is to show the relationship that exists in the COVID-19 pandemic, the mental health of people and the propensity for work-related accidents in companies. Various results are shown that detail how COVID-19 has generated and is generating mental alterations in people such as post-traumatic stress disorder, PTSD for its acronym in English. Likewise, data are presented that report the influence of mental health as a precursor to workplace accidents in different industries, with which it can be concluded that COVID-19 needs a comprehensive approach in companies to prevent it from negatively impacting workers and they end up accident during their daily work. Some concrete actions are proposed to promote and avoid in companies so that workers can be better managed in times of a COVID-19 pandemic.“
Acceso abierto
COVID-19, Mental Health and Its Relationship with Workplace Accidents
(Tech Science Press, 2022-05-27) Del-Aguila-Arcentales, Shyla; Alvarez-Risco, Aldo; Villalobos-Alvarez, Diego; Carhuapoma-Yance, Mario; Yáñez, Jaime A.
“The general objective of this article is to show the relationship that exists in the COVID-19 pandemic, the mental health of people and the propensity for work-related accidents in companies. Various results are shown that detail how COVID-19 has generated and is generating mental alterations in people such as post-traumatic stress disorder, PTSD for its acronym in English. Likewise, data are presented that report the influence of mental health as a precursor to workplace accidents in different industries, with which it can be concluded that COVID-19 needs a comprehensive approach in companies to prevent it from negatively impacting workers and they end up accident during their daily work. Some concrete actions are proposed to promote and avoid in companies so that workers can be better managed in times of a COVID-19 pandemic.“
Acceso abierto
Crisis due to war: anxiety, depression and stress in the population of 13 Latin American countries
(Frontiers Media SA, 2023-07-20) Mejia, Christian R.; Alvarez-Risco, Aldo; Chamorro-Espinoza, Scherlli; Yáñez, Jaime A.; Del-Aguila-Arcentales, Shyla; Castillón-Lozano, Jorge Andrés; Serna-Alarcón, Victor; Vilela-Estrada, Martin A.; Armada, José; Padilla, Valeria J.; Paucar, Medally C.
“Sustainability may be at risk in a population that has altered health, according to Sustainable Development Goal 3 (SDG 3): Health and well-being. The ongoing conflict between Russia and Ukraine could jeopardize SDG 3, specifically the mental health of the population. The present study sought to determine the association between severe anxiety, depression and stress in population of 13 Latin American countries according to fear about the war conflict. It was a crosssectional, analytical and multicenter study. Anxiety, depression and stress were measured with the DASS-21 test (Cronbach’s Alpha: 0.97) and fear due to an armed crisis with a questionnaire already validated in Latin America (Cronbach’s Alpha: 0.92), which was also adjusted for sex, age, education level and country of residence. Descriptive and analytical statistics were obtained. Of the 2,626 respondents, the main fear was that weapons of mass destruction would be used. In the multivariate models, strong associations were found between fear of a possible world-scale armed conflict and having severe or very severe levels of anxiety (aPR: 1.97; 95% CI: 1.64–2.36; value of p <0.001), depression (aPR: 1.91; 95% CI: 1.54–2.36; value of p <0.001) or stress (aPR: 2.05; 95% CI: 1.63–2.57; value of p <0.001). Sustainability linked to SDG 3, specifically mental health, is affected by this type of significant events, given the possible global war crisis that could trigger major events, even more so if added to the deterioration already experienced by COVID-19 in the Latin American region, insecurity and constant political uncertainty“
Acceso abierto
Effect of Corporate Social Responsibility on Consumer Satisfaction and Consumer Loyalty of Private Banking Companies in Peru
(MDPI, 2022-07-25) Leclercq-Machado, Luigi; Alvarez-Risco, Aldo; Esquerre-Botton, Sharon; Almanza-Cruz, Camila; Anderson-Seminario, María de las Mercedes; Del-Aguila-Arcentales, Shyla; Yáñez, Jaime A.
“This study aimed to determine the effect of corporate social responsibility (CSR) on consumer satisfaction and loyalty in the Peruvian private banking sector. A total of 390 bank consumers fulfilled an online survey. It evaluated the effect of corporate social responsibility (CSR), customer satisfaction (CS), and customer trust (CT) on customer loyalty. The results suggest that CSR and customer satisfaction, through customer trust, have a positive effect on customer loyalty. The model explained 63.6% of customer loyalty. Outcomes of the bootstrapping test showed that the path coefficients were significant. The research findings may help bank managers to understand customers’ satisfaction and trust, which can create a preference and loyalty for their firms. The study’s novelty is based on the use of the partial least square structural equation modeling technique (PLS-SEM) to evaluate CSR in the financial sector in Peru.“
Acceso abierto
Effect of Corporate Social Responsibility on Consumer Satisfaction and Consumer Loyalty of Private Banking Companies in Peru
(MDPI, 2022-07-25) Leclercq-Machado,Luigi; Alvarez-Risco, Aldo; Esquerre-Botton, Sharon; Almanza-Cruz, Camila; Anderson-Seminario, Maria de las Mercedes; Del-Aguila-Arcentales, Shyla; Yáñez , Jaime A.
“This study aimed to determine the effect of corporate social responsibility (CSR) on consumer satisfaction and loyalty in the Peruvian private banking sector. A total of 390 bank consumers fulfilled an online survey. It evaluated the effect of corporate social responsibility (CSR), customer satisfaction (CS), and customer trust (CT) on customer loyalty. The results suggest that CSR and customer satisfaction, through customer trust, have a positive effect on customer loyalty. The model explained 63.6% of customer loyalty. Outcomes of the bootstrapping test showed that the path coefficients were significant. The research findings may help bank managers to understand customers’ satisfaction and trust, which can create a preference and loyalty for their firms. The study’s novelty is based on the use of the partial least square structural equation modeling technique (PLS-SEM) to evaluate CSR in the financial sector in Peru. “
Acceso abierto
Evaluation of Environmental Contamination by Toxic Elements in Agricultural Soils and Their Health Risks in the City of Arequipa, Peru
(MDPI, 2023-02-20) Huerta Alata, Marcela; Alvarez-Risco, Aldo; Suni Torres, Lucia; Moran, Karina; Pilares, Denis; Carling, Gregory; Paredes, Betty; Del-Aguila-Arcentale, Shyla; Yáñez, Jaime A.
This study evaluated the concentration of toxic elements in soil samples from agricultural fields in the districts of Sachaca, Socabaya, Hunter, Quequeña, Yarabamba, Characato and Tiabaya in the city of Arequipa, Peru. The ecological risk, enrichment factor (EF), geo-accumulation index (Igeo) and integrated ecological risk index (RI) were estimated, while the health risk was determined with hazard coefficient (HQ) and hazard index (HI) values. Seven soil samples were collected in July 2019 and 17 toxic elements were analyzed in an accredited laboratory using the inductively coupled plasma-mass spectrometry (ICP-MS) methodology. The results were compared with environmental samples where no element exceeded what is established in the standard. The enrichment factor (EF), according to the background of Wedepohl, indicated that As (12.26 ± 3.66) presented a severe enrichment (high) in agricultural soils, while Cd (6.87 ± 3.25) presented moderate values. As, Cd, Pb, Cu and Zn (2.85 ± 0.85; 3.53 ± 1.67; 2.71 ± 1.25; 3.83 ± 0.81; 2.55 ± 0.79) presented low to moderate enrichment in agricultural soils, while Cr did not present enrichment in soils. The Igeo for As in Sachaca, Socabaya, Quequeña and Characato showed moderate contamination, Cu also showed moderate contamination in all the districts evaluated, and Cd showed the same contamination in the districts of Sachaca, Hunter, Quequeña and Tiabaya. The ecological risk in the districts evaluated showed a low degree of risk due to contamination by toxic elements. Finally, the health hazard index for toxic elements present in agricultural soils was evaluated, where the HQ values were negligible and the HI was less than 0.1 (H1 < 0.1) for children and adults.
Acceso abierto
Evaluation of Environmental Contamination by Toxic Elements in Agricultural Soils and Their Health Risks in the City of Arequipa, Peru
(MDPI, 2023-02-20) Huerta Alata, Marcela; Alvarez-Risco, Aldo; Suni Torres, Lucia; Moran, Karina; Pilares, Denis; Carling, Gregory; Paredes, Betty; Del-Aguila-Arcentales, Shyla; Yáñez, Jaime A.
This study evaluated the concentration of toxic elements in soil samples from agricultural fields in the districts of Sachaca, Socabaya, Hunter, Quequeña, Yarabamba, Characato and Tiabaya in the city of Arequipa, Peru. The ecological risk, enrichment factor (EF), geo-accumulation index (Igeo) and integrated ecological risk index (RI) were estimated, while the health risk was determined with hazard coefficient (HQ) and hazard index (HI) values. Seven soil samples were collected in July 2019 and 17 toxic elements were analyzed in an accredited laboratory using the inductively coupled plasma-mass spectrometry (ICP-MS) methodology. The results were compared with environmental samples where no element exceeded what is established in the standard. The enrichment factor (EF), according to the background of Wedepohl, indicated that As (12.26 ± 3.66) presented a severe enrichment (high) in agricultural soils, while Cd (6.87 ± 3.25) presented moderate values. As, Cd, Pb, Cu and Zn (2.85 ± 0.85; 3.53 ± 1.67; 2.71 ± 1.25; 3.83 ± 0.81; 2.55 ± 0.79) presented low to moderate enrichment in agricultural soils, while Cr did not present enrichment in soils. The Igeo for As in Sachaca, Socabaya, Quequeña and Characato showed moderate contamination, Cu also showed moderate contamination in all the districts evaluated, and Cd showed the same contamination in the districts of Sachaca, Hunter, Quequeña and Tiabaya. The ecological risk in the districts evaluated showed a low degree of risk due to contamination by toxic elements. Finally, the health hazard index for toxic elements present in agricultural soils was evaluated, where the HQ values were negligible and the HI was less than 0.1 (H1 < 0.1) for children and adults.
Acceso abierto
Factors Associated with Mortality in Patients with COVID-19 from a Hospital in Northern Peru
(MDPI, 2023-03-23) Valladares-Garrido, Mario J.; Alvarez-Risco, Aldo; Vasquez-Elera, Luis E.; Valdiviezo-Morales, Christopher G.; Martinez-Rivera, Raisa N.; Cruz-Zapata, Annel L.; Pereira-Victorio, César Johan; Garcia-Peña, Elian; Failoc-Rojas, Virgilio E.; Del-Aguila-Arcentales, Shyla; Davies, Neal M.; Yáñez, Jaime A.
We aimed to identify the factors associated with mortality in patients with COVID-19 from the hospitalization service of the Cayetano Heredia Hospital, Piura, Peru, from May to June 2020. A prospective study was conducted in hospitalized patients with a confirmed diagnosis of COVID-19 through serological and/or molecular reactive testing. The dependent variable was death due to COVID-19, and the independent variables were the epidemiological, clinical and laboratory characteristics of the patient. The chi-square test and the non-parametric Mann–Whitney U test were used, with a significance level of 5%. Of 301 patients with COVID-19, the majority of them were male (66.1%), and the mean age was 58.63 years. Of the patients analyzed, 41.3% of them died, 40.2% of them were obese and 59.8% of them had hepatic steatosis. The three most frequent signs/symptoms were dyspnea (90.03%), fatigue (90.03%) and a cough (84.72%). Being an older adult (p = 0.011), being hospitalized in the ICU (p = 0.001), overweight (p = 0.016), obese (p = 0.021) and having compromised consciousness (p = 0.039) and thrombocytopenia (p = 0.024) were associated with mortality due to COVID-19. Overall, the mortality rate due to COVID-19 was 41.3%. Having an older age, being hospitalized in the ICU, overweight, obese and having compromised consciousness and thrombocytopenia were positively associated with mortality in patients with COVID-19. These findings highlight the need to establish an adequate system of surveillance and epidemiological education in hospitals and communities in the event of new outbreaks, especially in rural and northern Peru.
Acceso abierto
Factors Associated with Mortality in Patients with COVID-19 from a Hospital in Northern Peru
(MDPI, 2023-02-23) Valladares-Garrido, Mario J.; Alvarez-Risco, Aldo; Vasquez-Elera, Luis E.; Valdiviezo-Morales, Christopher G.; Martinez-Rivera, Raisa N.; Cruz-Zapata, Annel L.; Pereira-Victorio, César Johan; Garcia-Peña, Elian; Failoc-Rojas, Virgilio E.; Del-Aguila-Arcentales, Shyla; Davies, Neal M.; Yáñez, Jaime A.
We aimed to identify the factors associated with mortality in patients with COVID-19 from the hospitalization service of the Cayetano Heredia Hospital, Piura, Peru, from May to June 2020. A prospective study was conducted in hospitalized patients with a confirmed diagnosis of COVID-19 through serological and/or molecular reactive testing. The dependent variable was death due to COVID-19, and the independent variables were the epidemiological, clinical and laboratory characteristics of the patient. The chi-square test and the non-parametric Mann–Whitney U test were used, with a significance level of 5%. Of 301 patients with COVID-19, the majority of them were male (66.1%), and the mean age was 58.63 years. Of the patients analyzed, 41.3% of them died, 40.2% of them were obese and 59.8% of them had hepatic steatosis. The three most frequent signs/symptoms were dyspnea (90.03%), fatigue (90.03%) and a cough (84.72%). Being an older adult (p = 0.011), being hospitalized in the ICU (p = 0.001), overweight (p = 0.016), obese (p = 0.021) and having compromised consciousness (p = 0.039) and thrombocytopenia (p = 0.024) were associated with mortality due to COVID-19. Overall, the mortality rate due to COVID-19 was 41.3%. Having an older age, being hospitalized in the ICU, overweight, obese and having compromised consciousness and thrombocytopenia were positively associated with mortality in patients with COVID-19. These findings highlight the need to establish an adequate system of surveillance and epidemiological education in hospitals and communities in the event of new outbreaks, especially in rural and northern Peru.
Acceso abierto
Factors Associated with SARS-CoV-2 Positivity in Patients Treated at the Lambayeque Regional Hospital, Peru during a Pandemic Period
(MDPI, 2022-10-18) Valladares-Garrido, Mario J.; Alvarez-Risco, Aldo; Rojas-Alvarado, Annel B.; Zuniga-Cáceres, José A.; Estrella Izarra, Naylamp A.; Christopher Ichiro Peralta; Astudillo, David; Díaz-Vélez,, Cristian; Failoc Rojas, Virgilio E.; Del-Aguila-Arcentales, Shyla; Davies, Neal M.; Garcia Guerra, Andrés; Yáñez, Jaime A.
The aim of this study was to provide additional data on mortality from COVID-19 with particular attention to the factors associated with the positivity of patients admitted to the Lambayeque Hospital in Peru. A retrospective cohort analysis was carried out to determine the clinical-epidemiological factors associated with positivity for SARS-CoV-2 in patients treated at the Lambayeque Regional Hospital during the health emergency period in the context of the COVID-19 pandemic. It was observed that, as the demographic age group increased, the percentage of seropositivity increased, with 66.8% of elderly adults testing positive, compared to 37.4% of children (p < 0.001). More seropositive men than women were evident (61.1% vs. 54.1%; p < 0.001). The most frequent symptom of patients with suspected COVID-19 was cough (65.0%). However, the symptoms with the greatest frequency of seropositive patients were ageusia (78.6%) and fever (77.6%); cough was one of the symptoms with the lowest (63.9%) (p-value < 0.001). The comorbidities with the most seropositive patients were obesity (80.7%) and diabetes mellitus (73.6%) (p-value < 0.001), different from the top comorbidity of heart disease (12.7%) in suspected COVID-19 patients. In terms of disease signs, abnormal findings on MRI (98.11%) and dyspnea (28.7%) were the most common in suspected COVID-19 patients, similar to those in seropositive patients, which were dyspnea (81.4%) and abnormal tomography findings (75.3%) (p-value < 0.001).