Wilfrido Ortega-Leon

Mr. Wilfrido Ortega-Leon


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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LOLuc ONAMBELE
Luc ONAMBELE
WOWilfrido Ortega-Leon
Wilfrido Ortega-Leon
SGSara Guillen-Aguinaga
Sara Guillen-Aguinaga
Maria João ForjazMaria João Forjaz
Maria João Forjaz
AYAmanuel Yoseph
Amanuel Yoseph
Francisco Guillen-GrimaFrancisco Guillen-Grima
Francisco Guillen-Grima
Background: United Nations Sustainable Development Goals state that by 2030, the global maternal mortality rate (MMR) should be lower than 70 per 100,000 live births. MMR is still one of Africa’s leading causes of death among women. The leading causes of maternal mortality in Africa are hemorrhage and eclampsia. This research aims to study regional trends in maternal mortality (MM) in Africa. Methods: We extracted data for maternal mortality rates per 100,000 births from the United Nations Children’s Fund (UNICEF) databank from 2000 to 2017, 2017 being the last date available. Joinpoint regression was used to study the trends and estimate the annual percent change (APC). Results: Maternal mortality has decreased in Africa over the study period by an average APC of −3.0% (95% CI −2.9; −3,2%). All regions showed significant downward trends, with the greatest decreases in the South. Only the North African region is close to the United Nations’ sustainable development goals for Maternal mortality. The remaining Sub-Saharan African regions are still far from achieving the goals. Conclusions: Maternal mortality has decreased in Africa, especially in the South African region. The only region close to the United Nations’ target is the North African region. The remaining Sub-Saharan African regions are still far from achieving the goals. The West African region needs more extraordinary efforts to achieve the goals of the United Nations. Policies should ensure that all pregnant women have antenatal visits and give birth in a health facility staffed by specialized personnel.

20 November 2023 in Clinics and Practice
Verified
Journal Article
Open access
PDF file
Francisco Guillen-GrimaFrancisco Guillen-Grima
Francisco Guillen-Grima
SGSara Guillen-Aguinaga
Sara Guillen-Aguinaga
LGLaura Guillen-Aguinaga
Laura Guillen-Aguinaga
RBROSA MARÍA ALÁS BRUN
ROSA MARÍA ALÁS BRUN
LOLuc ONAMBELE
Luc ONAMBELE
Ines Aguinaga-Ontoso  BA(Psichology) MD  MPH PhDInes Aguinaga-Ontoso BA(Psichology) MD MPH PhD
Ines Aguinaga-Ontoso BA(Psichology) MD MPH PhD
The rapid progress in artificial intelligence, machine learning, and natural language processing has led to increasingly sophisticated large language models (LLMs) for use in healthcare. This study assesses the performance of two LLMs, the GPT-3.5 and GPT-4 models, in passing the MIR medical examination for access to medical specialist training in Spain. Our objectives included gauging the model’s overall performance, analyzing discrepancies across different medical specialties, discerning between theoretical and practical questions, estimating error proportions, and assessing the hypothetical severity of errors committed by a physician. Material and methods: We studied the 2022 Spanish MIR examination results after excluding those questions requiring image evaluations or having acknowledged errors. The remaining 182 questions were presented to the LLM GPT-4 and GPT-3.5 in Spanish and English. Logistic regression models analyzed the relationships between question length, sequence, and performance. We also analyzed the 23 questions with images, using GPT-4’s new image analysis capability. Results: GPT-4 outperformed GPT-3.5, scoring 86.81% in Spanish (p < 0.001). English translations had a slightly enhanced performance. GPT-4 scored 26.1% of the questions with images in English. The results were worse when the questions were in Spanish, 13.0%, although the differences were not statistically significant (p = 0.250). Among medical specialties, GPT-4 achieved a 100% correct response rate in several areas, and the Pharmacology, Critical Care, and Infectious Diseases specialties showed lower performance. The error analysis revealed that while a 13.2% error rate existed, the gravest categories, such as “error requiring intervention to sustain life” and “error resulting in death”, had a 0% rate. Conclusions: GPT-4 performs robustly on the Spanish MIR examination, with varying capabilities to discriminate knowledge across specialties. While the model’s high success rate is commendable, understanding the error severity is critical, especially when considering AI’s potential role in real-world medical practice and its implications for patient safety.

29 August 2023 in Epidemiologia
Verified
Journal Article
Open access
PDF file
LOLuc ONAMBELE
Luc ONAMBELE
SGSara Guillen-Aguinaga
Sara Guillen-Aguinaga
LGLaura Guillen-Aguinaga
Laura Guillen-Aguinaga
WOWilfrido Ortega-Leon
Wilfrido Ortega-Leon
RMRocio Montejo
Rocio Montejo
Francisco Guillen-GrimaFrancisco Guillen-Grima
Francisco Guillen-Grima
With the United Nations Sustainable Development Goals (SDG) (2015–2030) focused on the reduction in maternal mortality, monitoring and forecasting maternal mortality rates (MMRs) in regions like Africa is crucial for health strategy planning by policymakers, international organizations, and NGOs. We collected maternal mortality rates per 100,000 births from the World Bank database between 1990 and 2015. Joinpoint regression was applied to assess trends, and the autoregressive integrated moving average (ARIMA) model was used on 1990–2015 data to forecast the MMRs for the next 15 years. We also used the Holt method and the machine-learning Prophet Forecasting Model. The study found a decline in MMRs in Africa with an average annual percentage change (APC) of −2.6% (95% CI −2.7; −2.5). North Africa reported the lowest MMR, while East Africa experienced the sharpest decline. The region-specific ARIMA models predict that the maternal mortality rate (MMR) in 2030 will vary across regions, ranging from 161 deaths per 100,000 births in North Africa to 302 deaths per 100,000 births in Central Africa, averaging 182 per 100,000 births for the continent. Despite the observed decreasing trend in maternal mortality rate (MMR), the MMR in Africa remains relatively high. The results indicate that MMR in Africa will continue to decrease by 2030. However, no region of Africa will likely reach the SDG target.

7 October 2022 in Preprints.org
Verified
Preprint
Open access
PDF file
LOLuc ONAMBELE
Luc ONAMBELE
WOWilfrido Ortega-Leon
Wilfrido Ortega-Leon
SGSara Guillen-Aguinaga
Sara Guillen-Aguinaga
Maria João ForjazMaria João Forjaz
Maria João Forjaz
AYAmanuel Yoseph
Amanuel Yoseph
Francisco Guillen-GrimaFrancisco Guillen-Grima
Francisco Guillen-Grima
Background: United Nations Sustainable Development Goals state that by 2030, the Global maternal mortality rate (MMR) should be lower than 70 per 100,000 live births. MMR is still one of Africa's leading causes of death among women. This research aims to study regional trends in maternal mortality in Africa. Methods: We extracted data for Maternal mortality rates per 100,000 births from the UNICE data bank from 2000 to 2017, being 2017 the last date available. Joinpoint regression was used to study the trends and estimate the annual percent change (APC). Results: Maternal mortality has decreased in Africa over the study period by an average APC of -3.0% (95% CI -2.9;-3,2%). All regions showed significant downward trends, with the sharpest decreases in the South. Only the North African region is close to the United Nations' sustainable development goals for Maternal mortality. The remaining sub-Saharan African regions are still far from achieving the goals. Conclusions: maternal mortality has decreased in Africa, especially in the South Africa region. The only region closed to the United Nations target is North Africa. The remaining sub-Saharan African regions are still far from achieving the goals. These results could be used for the development of Regional Policies.

29 June 2023 in Preprints.org
Verified
Preprint
Open access
PDF file
LOLuc ONAMBELE
Luc ONAMBELE
SGSara Guillen-Aguinaga
Sara Guillen-Aguinaga
LGLaura Guillen-Aguinaga
Laura Guillen-Aguinaga
WOWilfrido Ortega-Leon
Wilfrido Ortega-Leon
RMRocio Montejo
Rocio Montejo
Francisco Guillen-GrimaFrancisco Guillen-Grima
Francisco Guillen-Grima
(1) Background: With the United Nations Sustainable Development Goals (SDG) (2015-2030) fo-cusing on reducing maternal mortality, monitoring and forecasting Maternal Mortality Rates (MMR) in regions like Africa become crucial for health strategy planning by policymakers, in-ternational organizations, and NGOs. (2) Methods: We collected maternal mortality rates per 100,000 births from the World Bank database between 1990 and 2015. Join Point regression was applied to assess trends, and the autoregressive integrated moving average (ARIMA) model was used on 1990-2015 data to forecast the MMR for the next 15 years. (3) Results: The study found a decline in MMR in Africa with an average annual percentage change (APC) of -2.6% (95% CI -2.7; -2.5). North Africa reported the lowest MMR, while East Africa experienced the sharpest decline. The region-specific ARIMA models predict that the maternal mortality rate (MMR) in 2030 will vary across regions, ranging from 65 deaths per 100,000 births in North Africa to 249 deaths per 100,000 births in Central Africa., averaging 197 per 100,000 births for the continent. (4) Conclusions: Despite the observed decreasing trend in maternal mortality rate (MMR), the MMR in Africa remains relatively high. The results indicate that MMR in Africa will continue to decrease by 2030. However, only North and South Africa will likely reach the SDG target.

19 September 2023 in Preprints.org
Verified
Preprint
Open access
PDF file
Francisco Guillen-GrimaFrancisco Guillen-Grima
Francisco Guillen-Grima
SGSara Guillen-Aguinaga
Sara Guillen-Aguinaga
LGLaura Guillen-Aguinaga
Laura Guillen-Aguinaga
RBROSA MARÍA ALÁS BRUN
ROSA MARÍA ALÁS BRUN
LOLuc ONAMBELE
Luc ONAMBELE
Ines Aguinaga-Ontoso  BA(Psichology) MD  MPH PhDInes Aguinaga-Ontoso BA(Psichology) MD MPH PhD
Ines Aguinaga-Ontoso BA(Psichology) MD MPH PhD
The rapid progress in artificial intelligence, machine learning, and natural language processing has led to the emergence of increasingly sophisticated large language models (LLMs) enabling their use in healthcare. The study assesses the performance of two LLMs: the GPT-3.5 and GPT-4 models in passing the medical examination for access to medical specialist training in Spain MIR. Our objectives included gauging the model's overall performance, analyzing discrepancies across different medical specialties, discerning between theoretical and practical questions, estimating error proportions, and assessing the hypothetical severity of errors committed by a physician. We studied the 2022 Spanish MIR examination after excluding those questions requiring image evaluations or having acknowledged errors. The remaining 182 questions were presented to the LLM ChatGPT4 and GPT-3.5 in Spanish and English. Logistic regression models analyzed the relationships between question length and question sequence d performance. GPT-4 outperformed GPT -3.5, scoring 86.81% in Spanish (p<0.001). English translations had a slightly enhanced performance. Among medical specialties, GPT-4 achieved a 100% correct response rate in several areas, with specialties like Pharmacology, ICU, and Infectious Diseases showing lower performance. The error analysis revealed that while a 13.2% error rate existed, gravest categories like "error requiring intervention to sustain life" and "error resulting in death" had a 0% rate. Conclusions: GPT-4 performs robustly on the Spanish MIR examination, varying its capability to discriminate knoweldge across specialties. While the model's high success rate is commendable, understanding the error severity is critical, especially when considering AI's potential role in real-world medical practice and its implication on patient safety.