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1
artículo
Publicado 2023
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Objective: to determine the preferences of the patients in terms of age, sex and clothing of the dentists of two educational entities, public and private. Material and Methods: Basic descriptive cross-sectional study, for which the survey methodology was used by virtual means to a sample of 165 students from 8 to 25 years old divided into 3 groups, from 8 to 11 years, from 12 to 17 years and from 18 to 25 years of both sexes, photographs of 4 dental models were used: 2 women, one between 25 to 30 years old, another from 40 to 50 years old and two men of the same ages with 3 different uniforms, the processing of the data was through tables of frequencies and percentages. Results: The main outcome was the preference for a young female professional, wearing a pediatric dental jacket. Conclusions: It should be noted that the choice of the young professional was very marked in relation to the...
2
artículo
Objective: To describe a weight estimation formula from the age of children attended in a Pediatric Dentistry Clinic and compare its accuracy with standard formulas. Methods: A cross-sectional, observational study that included 165 children between three and ten years of age who presented to the pediatric dentistry consultation. Linear regression analysis allowed prediction of weight according to the variation of the age of the sample studied. The derived formula was analyzed according to its accuracy and accuracy through mean percentage errors, 95% limits and through Bland-Altman diagrams compared to the Luscombe, APLS, Tinning and Argall formulas. Results: The average weight was 26.81±8.46 kg. The prediction formula was: Weight in kilograms = 3 (age in years) + 7. The Luscombe formula obtained an average error rate of -2.69%, the APLS formula of 17.87%, while Argall formula 1.41. The ...
3
artículo
Publicado 2021
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Objective: To determine the level of mineralization of the third lower molar according to chronological age using the Demirjian method in panoramic digital radiographies of Andean patients. Material and methods: A correlational study was carried out analyzing 706 digital panoramic radiographies in the Unidad Académica de Salud y Bienestar de la Universidad Católica de Cuenca Ecuador, in the period 2015-2016. The patients were between 6 and 22 years of age. A total of 1412 third molars (4.8 and 3.8) were evaluated. Results: A first descriptive analysis showed a strong correlation (Rho=0.99) between chronological age and the level or degree of mineralization of the lower third molar. In both studied pieces the beginning of the formation of the third molar was given in average at 8,13 years and finished at 20,41 years. The stages that showed greater coincidence in both sexes and in both p...
4
artículo
Publicado 2022
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Introduction: This article summarizes the clinical practice guide (CPG) for the diagnosis and management of cholelithiasis, acute cholecystitis and choledocholithiasis in the Peruvian Social Security (EsSalud). Objective: To provide clinical recommendations based on evidence for the management of patients with cholelithiasis, acute cholecystitis and choledocholithiasis in EsSalud. Methods: a guideline task force (GTF) was formed with internists, general surgeons, gastroenterologists, and methodologists. The group proposed 10 clinical questions to be answered in this Clinical practice guideline (CPG). Systematic searches of preview reviews were performed and when it was necessary, primary studies from PubMed and CENTRAL during 2017 were reviewed. The evidence was selected aiming to answer each proposed question. Certainty of evidence was evaluated using Grading of Recommendations Assessme...
5
artículo
Publicado 2024
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Objective: To develop a simplified anthropometric equation of total body water based on abdominal circumference and age based on Watson's formula. Material and methods: Analytical and cross-sectional study, based on data from the 2022 national demographic health survey (population=32,066). The variables were: total body water, age, sex, abdominal perimeter. Neural networks (multilayer perceptron), multiple linear regression, and Spearman correlation were used to compare the results with the 2021 survey population (population=31,966). Results: The multilayer perceptron had a relative error of 0.17 and 0.12 in women and men, respectively. The regression equation in women was: 8.083 + (0.308*abdominal circumference) + (-0.084*age). In men: 12.132 + (0.338*abdominal circumference) + (-0.166*age). The correlation of both equations was compared with a control group (ENDES-2021), finding very s...
6
artículo
Publicado 2022
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Since Paul Lazarsfeld’s first study on the influentials, carried out in the forties, research on opinion leaders have been developed mainly in the political field. Nevertheless, in his studies, Lazarsfeld focused his attention on other areas such as fashion. Lazarsfeld identified influentials as those people with a “leadership almost invisible and certainly unconscious, face to face; close, informal and daily”, being able to influence in their relatives’ voting and purchasing decisions. These opinion leaders’ or influentials prescribing ability was and is today very powerful and of great interest for its study. Clearly, the influence of the Internet in society has changed the way we communicate, interact and consume. In the fashion area, a research study about the influentials after the advent of the Internet has not been done yet. As a consequence, the main goal of this resear...
7
artículo
Publicado 2018
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The objective of the present study was to predict carcass weight (PC) in guinea pigs (Cavia porcellus) at the age of slaughtering (16±2 weeks), considering their biometric measurements. The following measures and weights were taken before and after the slaughter of 150 male guinea pigs of the Cieneguilla genotype: live body weight (PV), body length (LC), head length (LCA), head width (AC), loin length (LL), loin width (AL), chest girth (PT), thigh perimeter (PM), thigh length (LM), arm perimeter (PB), arm length (LB), and rump middle square (CMG), as well as the carcass weight (PC). The data were analyzed to determine the best regression equation and to establish the best predictive linear model of carcass weight. The «Step-Wise Regression» process of the SAS statistical package was used. The combinations of independent variables in the model revealed that the variables PV, PT, AC, an...
8
tesis de grado
Publicado 2019
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El presente Informe tiene como objetivo la puesta en marcha de la producción y comercialización del bloqueador solar anti age BIOLIFE, de la empresa EKO SKIN SAC, ubicada en San Juan de Miraflores, con la finalidad de asegurar la rentabilidad y sostenibilidad del proyecto. El producto es un bloqueador solar anti age, que tendrá dos ingredientes naturales activos: el aceite de caléndula, por su eficaz propiedad antioxidante, y el aceite de semilla de frambuesa, un excelente filtro orgánico que disminuye la probabilidad de obtener cáncer de piel. La presentación será en tubos de 150 ml con un FPS de 50. El proyecto tiene un horizonte de 5 años, con un modelo de negocio BUSINESS to CONSUMER (B2C). Está dirigido a un público de personas entre 30 y 59 años, de NSE A y B con domicilio en las zonas 6 y 7 de Lima Metropolitana. Inicialmente la comercialización será a través de 03 ...
9
artículo
Publicado 2024
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The present study has two objectives. On the one hand, the psychometric properties of the Wagnild and Young (1993) Resilience Scale are analyzed, and on the other hand, the values obtained were compared according to sex and age of the participants. The sample were 333 university students from a private university in Arequipa (Peru), of which approximately half were men and the other half women, with an average age of 17 years. The results of confirmatory factor analysis suggest a four-factor structure: Interest, Energy and strength, Purpose identity and Decision, with adequate goodness of fit indices. However, for the dimensions of Decision and Energy and strength, internal consistency had inadequate values. Comparative data indicate that women and 18-year-old students have higher scores on some resilience factors than men and 16-year-old students. Results suggest the need for extendi...
10
artículo
Publicado 2024
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Objective: To describe the trends in the frequency of obesity and its relationship with some socioeconomic factors in women of childbearing age in Peru. Methods: Analytical cross-sectional study of secondary data, using the databases of the Encuesta Nacional Demográfica en Salud (ENDES) from 2005 to 2018. The frequency of women with obesity was estimated for each year and compared using the confidence intervals at 95% (95% CI). The magnitude of association was compared between place, age and parity, place of residence, level of education and wealth index. Results: An increase in obesity was observed in women of childbearing age from 17.72% (95% CI: 16.24-19.32) in 2005 to 32% (95% CI: 30.46-34.42) in 2018. The prevalence of type I obesity increased from 9.07% (95% CI 8.09-10.16) in 2005 to 22.15% (95% CI 15.19-16.48) in 2018. It was observed a continuous increase in the prevalence of ty...
11
tesis de maestría
Publicado 2021
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Descargue el texto completo en el repositorio institucional de la University of Oslo: http://hdl.handle.net/10852/86865
12
artículo
This study evaluates the predictive capacity of sociodemographic variables of the mother over the level of maternal secure base scripts. The participants were 83 mothers from 15 to 45 years old (M = 24.72, SD = 8.70).The level of maternal secure base was evaluated through the Narratives of Adult Attachment (Waters & Waters, 2006). The results show that the participants do not have an adequate level of secure base script. It was found that interaction between the age of the mother and the educational attainment level, partly explains the level of the maternal secure base script (R2 = .19). The protector role of the level of educational attainment for older mothers to have a higher level of secure base scripts isproposed.
13
artículo
Publicado 2021
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Objective. To compare the efficacy of three dental methods (Demirjian, modified Gleiser-Hunt, and morphometric analysis) based on the root development of the lower third molars to determine age estimation on 13 to 23-years-old participants. Methods. The sample included 978 orthopantomographs of people with known chronological age and sex (484 men and 494 women). The root development of the molars was classified according to the indicated methods. The concordance of the sample was performed based on a second classification of 10% of the sample. The stages of root development - obtained with the aforementioned methods - and the chronological age were correlated to obtain: 1) the correlation and determination index 2) the regression formulas that predict age and 3) the difference between the real chronological age and the estimated dental age for each method. Results. The modified Gleiser-H...
14
artículo
Publicado 2025
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The article presents aging as a multifactorial, progressive biological process shaped by intersecting theories, with special focus on oxidative stress and free radical involvement. The Free Radical Theory of Aging posits that reactive oxygen species (ROS), produced both endogenously and via environmental exposures, induce cumulative molecular damage to lipids, proteins, and DNA impacting cellular and tissue integrity. This oxidative stress contributes to age-related degenerative diseases such as cancer and Alzheimer’s. Although antioxidants (both endogenous enzymes and exogenous dietary compounds) offer protective mechanisms against ROS, empirical evidence on their efficacy in extending lifespan remains inconclusive, largely due to bioavailability challenges and systemic complexity. The article also addresses mitochondrial dysfunction and genomic instability especially mitochondrial DN...
15
artículo
Publicado 2025
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The article presents aging as a multifactorial, progressive biological process shaped by intersecting theories, with special focus on oxidative stress and free radical involvement. The Free Radical Theory of Aging posits that reactive oxygen species (ROS), produced both endogenously and via environmental exposures, induce cumulative molecular damage to lipids, proteins, and DNA impacting cellular and tissue integrity. This oxidative stress contributes to age-related degenerative diseases such as cancer and Alzheimer’s. Although antioxidants (both endogenous enzymes and exogenous dietary compounds) offer protective mechanisms against ROS, empirical evidence on their efficacy in extending lifespan remains inconclusive, largely due to bioavailability challenges and systemic complexity. The article also addresses mitochondrial dysfunction and genomic instability especially mitochondrial DN...
16
artículo
Publicado 2020
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The purpose of this work was to argue the problem of population aging in Cuba from the approach of the Cuban media. The central methodology used was the systematic review of publications related to the objective theme, leveraged in the use of the historical-logical and analysis-synthesis methods; that allowed to systematize the causes that condition this socio-cultural phenomenon from a multifactorial analysis, which describes the basic factors that condition the demographic problem in question. Likewise, to warn about the consequences for the country in the short, medium and long term; if the diagnosed situation continues, analyze the role of the media to mitigate this situation, explain the impact at the media level of the problem and assess the contribution of the national media in the prevention and comprehensive dissemination of the issue; Lastly, analyze the treatment of informatio...
17
artículo
Publicado 2015
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The onset of puberty in girls has been occurring each time at a younger age, generating concern among parents and seeking healthcare for possible precocious puberty. Nowadays diagnosis of central precocious puberty (CPP) and early puberty onset have chronological cutoff points established over five years ago and despite secular changes described in various populations of the world. The importance of differentiating a physiological event from a pathogenic one is mainly because of the need of timely decision to begin treatment in order to prevent height compromise, reproductive system alterations and risk of future diseases like cardiovascular disease and breast cancer in adulthood. Limits for puberty onset based on biostatistics in normal population should not be applied only to establish limits of chronological age because the risk of a wrong diagnosis. In this article physiological and ...
18
artículo
Publicado 2020
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The purpose of this work was to argue the problem of population aging in Cuba from the approach of the Cuban media. The central methodology used was the systematic review of publications related to the objective theme, leveraged in the use of the historical-logical and analysis-synthesis methods; that allowed to systematize the causes that condition this socio-cultural phenomenon from a multifactorial analysis, which describes the basic factors that condition the demographic problem in question. Likewise, to warn about the consequences for the country in the short, medium and long term; if the diagnosed situation continues, analyze the role of the media to mitigate this situation, explain the impact at the media level of the problem and assess the contribution of the national media in the prevention and comprehensive dissemination of the issue; Lastly, analyze the treatment of informatio...
19
artículo
The aim of this study was to develop a specific dental age estimation formula for adults in Lima based on Lamendin´s, Prince – Ubelaker´s and Ubelaker – Parra´s methods. The sample consisted in 50 healthy permanent one-root teeth of adult patients between 25 to 75 years old treated in health centers in Lima city. The applicability of the three dental methods (Lamendin, Prince - Ubelaker and Ubelaker-Parra) were validated to estimate the age of the sample. This was done using the Wilcoxon test that showed that the ages estimated by both, Prince – Ubelaker`s and Ubelaker – Parra`s methods did not have significant difference from the real age, compared with the results of Lamendin that actually showed significant differences. Age estimation was better with Prince – Ubelaker`s method (r = 0.935) compared with Ubelaker – Parra`s method (r = 0.918), so the first method was the m...
20
artículo
The aim of this study was to develop a specific dental age estimation formula for adults in Lima based on Lamendin´s, Prince – Ubelaker´s and Ubelaker – Parra´s methods. The sample consisted in 50 healthy permanent one-root teeth of adult patients between 25 to 75 years old treated in health centers in Lima city. The applicability of the three dental methods (Lamendin, Prince - Ubelaker and Ubelaker-Parra) were validated to estimate the age of the sample. This was done using the Wilcoxon test that showed that the ages estimated by both, Prince – Ubelaker`s and Ubelaker – Parra`s methods did not have significant difference from the real age, compared with the results of Lamendin that actually showed significant differences. Age estimation was better with Prince – Ubelaker`s method (r = 0.935) compared with Ubelaker – Parra`s method (r = 0.918), so the first method was the m...
