Análisis de componentes principales y análisis de regresión para datos categóricos. Aplicación en la hipertensión arterial

Céspedes, Juan Manuel Navarro; Cardoso, Gladys M. Casas; Rodríguez, Emilio González

doi:10.15517/rmta.v17i2.2128

Cited by 11 publications

(5 citation statements)

References 11 publications

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“…The multivariate analyses were performed in InfoStat (statistical software version 04-10-2015). Likewise, the Pearson correlation coefficient was used (Navarro-Céspedes et al 2010), considering the vectors' angles between variables (Balzarini et al 2015).…”

Section: Multivariate Analysismentioning

confidence: 99%

Quantitative Ethnobotanical Study of Medicinal Species With Dermatological Relevance Used in Traditional Mayan Medicine

Escobar-Chan,

Fernández-Concha,

Rodríguez-García

et al. 2024

Journal of Ethnobiology

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This ethnobotanical study highlights the significant knowledge of the Maya Yucatecan healers about medicinal plants used to treat skin diseases and the importance of studying the ancient knowledge inherited from generation to generation. Historically, the Maya people have relied on the use of medicinal plants to treat various ailments, including skin diseases. The study focuses on identifying the plants that have been traditionally employed for these purposes. By comparing historical sources with contemporary ethnobotanical data gathered from the field, this research uncovers the evolving patterns of plant usage over time. It also underscores the significance of considering sociopolitical circumstances in understanding changes in local knowledge. The data indicated that Rutaceae, Euphorbiaceae, Lamiaceae, and Asteraceae were the most represented families. The ethnohistoric record also showed gaps linked to the local knowledge developed by the Mayans over time. The principal component analysis technique applied to our ethnobotanical data simplifies the complexity of information on the use of medicinal flora to treat skin conditions, resulting in a new predictive model for pooling herbal knowledge. Correlations indicated that more than 50% of the listed species are used to treat fungal infections. This historical perspective enriches our understanding of the dynamic relationship between the Maya people and their use of medicinal plants for skin-related ailments.

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Section: Multivariate Analysismentioning

confidence: 99%

Quantitative Ethnobotanical Study of Medicinal Species With Dermatological Relevance Used in Traditional Mayan Medicine

Escobar-Chan,

Fernández-Concha,

Rodríguez-García

et al. 2024

Journal of Ethnobiology

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“…The PCAs calculated the linear combinations between the parameters that explained the greatest variation in the data. Thus, few linear combinations but greater in uence were su cient to understand the information contained in the data and its relationship with other variables (Céspedes et al 2010;Zeng et al 2013). Before the PCA, the normal distribution of the data was tested with the Shapiro-Wilk test (p ≤ 0.05), and homogeneity of variance was tested with Bartlett's test (p ≤ 0.05).…”

Section: Quality Index (Qi) Determinationmentioning

confidence: 99%

Quality Indicators in Three Coffee Production Agrosystems

Fernández

González

Herrera-Cabrera

et al. 2023

Preprint

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Healthy soil is a fundamental resource against hunger; it contributes to mitigating climate change and ensures sustainable production. The economic and social importance of coffee requires taking measures to promote its sustainable production. Shaded coffee production systems offer valuable ecosystem services indispensable for product diversification. In this context, we compared the quality of the soil, foliage, and seed of three coffee production systems: under mango shade (CM), under banana shade (CB), and under the full sun (CS). Using principal component analysis, we selected the minimum data set to designate quality indicators. For soil, the quality indicators were pH, cation exchange capacity, N content, the concentration of Ca, Mg, K, Fe, soil moisture, percentage specific conductance, soil penetration resistance and the number of worms. Foliar indicators corresponded to N content, the concentration of K, Ca, Fe, Cu, and Chlorophyll b; and seed indicators were concentration of P, K, Ca, Mg, Zn, and Cu. The soil quality index was moderate in the shaded coffee production systems, but deficient in the CS system. Foliar quality was very high in the CM system, moderate in CB and low in CS. Seed yield was low in the three systems. This research shows the main indicators influencing not only soil quality but also plant and seed nutrition in the three systems. Knowledge of the indices will allow establishing of better agronomic management practices in the shaded systems, improving soil fertility, plant nutrition, and coffee seed quality.

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“…En este caso, el procedimiento se llevó a cabo sobre los niveles de acuerdo con las categorías de valor social (Tabla 1). Después del escalamiento, se aplicó la función "princals" del mismo paquete para generar un análisis de componentes principales categórico (ACPC), un método que reduce las dimensiones para que, al igual que un análisis de componentes principales, sea posible evidenciar la relación entre las variables originales (Navarro et al, 2010). Para este procedimiento en específico, se descartaron el valor de biodiversidad (Bio) y la alternativa económica relacionada con la disposición de refugio (Ecs), debido a la cantidad de datos perdidos.…”

Section: Análisis De Los Datosunclassified

Valoración social de humedales costeros en el noroeste de México

Ruiz Luna,

De la Rosa-Velázquez

2023

Acta Universitaria

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Los humedales aportan servicios ecosistémicos determinantes para el bienestar humano; sin embargo, su valor e importancia se estiman principalmente desde una visión económica que provee información relevante, pero que no necesariamente contribuye a su conservación, desplazando en ocasiones visiones de manejo definidas localmente por los beneficiarios cercanos o directos. Considerando lo anterior, en este trabajo se estimó el valor social que los beneficiarios locales asignan a los humedales costeros y sus servicios ecosistémicos en el sur de Sinaloa, a partir de un marco metodológico participativo, espacialmente explícito. Los resultados indican que el valor social se asocia con la localidad de los beneficiarios, con la presencia de servicios de provisión con valor económico ofrecidos por los humedales, así como con condiciones sociales que favorecen la educación ambiental. Los aspectos relacionados con la historia y la espiritualidad tuvieron escasa relevancia en la valoración de los humedales.

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Análisis de componentes principales y análisis de regresión para datos categóricos. Aplicación en la hipertensión arterial

Cited by 11 publications

References 11 publications

Quantitative Ethnobotanical Study of Medicinal Species With Dermatological Relevance Used in Traditional Mayan Medicine

Quantitative Ethnobotanical Study of Medicinal Species With Dermatological Relevance Used in Traditional Mayan Medicine

Quality Indicators in Three Coffee Production Agrosystems

Valoración social de humedales costeros en el noroeste de México

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