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1
artículo
Publicado 2015
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An exploratory analysis of the spatial distribution of social indicators in developing countries is essential to understand how these indicators are distributed geographically. Particularly in this study we intend to describe the spatial distribution of the multidimensional poverty index across the districts of Metropolitan Lima by crossing its borders and establishing a certain degree of competitiveness among local governments, so that their authorities take corrective action policies and strengthen the level of key indicators on which the corresponding social index depends. The new ingredient in this type of studies is the consideration of the geographical coordinate of each of the districts in the analysis, so that the methodological design takes into account not only the occurrence of the phenomenon of interest, but also its geographical location and its possible interaction in space...
2
artículo
Publicado 2022
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In recent years, the development of seismic networks in Metropolitan Lima, administrated by public and private institutions, has received special attention since it makes possible the quantification of different seismic indexes under the occurrence of earthquakes. Therefore, the integration of the information both from acceleration sensors and site conditions from microzoning studies allows the estimation of the possible extent of the damage in quasi-real time. In this study, the implementation of a system to evaluate seismic parameters in a uniform grid of 250 x 250 m2 resolution is reported. In this regard, peak ground acceleration (PGA) values from the available time-history records are computed and reduced to the engineering bedrock level. Then, by means of the interpolation technique called Ordinary Kriging, in which each seismic station is considered as a random variable and the co...
3
artículo
Publicado 2001
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La presente investigación tiene como propósito explorar las actitudes hacia la preservación del medio ambiente con una muestra representativa de estudiantes universitarios de Lima y Callao. Para lo cual se construyo un instrumento de medición del PEQI (Índice de la Calidad Ambiental Percibida cuyo nombre original es PERCEIVED ENVIROMENTAL QUALITY INDICES) que al haber cumplido con los pasos y procedimientos necesarios para su validez y confiabilidad. De acuerdo a los resultados de la estimación del índice PEQI podemos concluir que los estudiantes universitarios en Lima Metropolitana y Callao tienen una percepción con tendencia positiva sobre el medio ambiente.
4
artículo
Publicado 2024
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Currently in Peru, UV index levels exceed the maximum allowable value (11+ Extreme). For this reason, it is important to evaluate the effectiveness of sunscreens with different Sun Protection Factor (SPF) ratings, which is a laboratory measure of the sunscreen's efficacy against UV-B radiation on our skin. In this study, the in vitro technique will be used following COLIPA recommendations, which involves measuring the transmission of UV radiation through the cream. The results obtained for the different SPFs are consistent with the values indicated on the product packaging: Bahía-SPF 45, Avon-SPF 50, and Bahía-SPF 70. However, they deviate by 30% from the indicated values for the higher SPFs, specifically Bahía-SPF 90, Bahía-SPF 100, and Unique-SPF 100
5
artículo
Objetive: To establish values for neonatal ponderal index (PI) in a group of healthy fetuses born from healthy singleton pregnant women at Lima, Peru. Materials and Methods: A retrospective, analytic and transversal study was conducted. Maternal and perinatal data from January 1, 1991 through December 31,1999 was retrieved from the Department of Obstetrics/Gynecology and Pediatrics Database at Hospital Nacional Docente Madre-Niño “San Bartolome”. Healthy singleton pregnant women between 20 and 30 years old, BMI between 20 and 25 kg/m2 , without obstetrical complications, with a difference ± 2 weeks between last menstrual period and gestational age by physical assessment of a live-healthy neonate were selected. PI was defined as birthweight in grams x 100/ [crown-heel length]3 . Results: The PI [50th percentile (10th percentile- 90th percentile)] in 5,443 Lima healthy neonates at 35...
6
tesis de grado
Publicado 2016
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Desarrolla la evaluación superficial del pavimento flexible de las vías mencionadas aplicando el método Pavement Condition Index (PCI), con el fin de conocer la condición del pavimento flexible existente. El método Pavement Condition Index (PCI) constituye el modo más completo para la evaluación y calificación objetiva de pavimentos, siendo ampliamente aceptado y formalmente adoptado como procedimiento estandarizado, y ha sido publicado por la ASTM como método de análisis y aplicación. Se desarrolló para obtener un índice de la integridad estructural del pavimento y de la condición operacional de la superficie, valor que cuantifica el estado en que se encuentra el pavimento para su respectivo tratamiento y mantenimiento. Se determinó que el 100 por ciento de las vías no ha sido evaluado; por lo tanto, con la aplicación de la metodología PCI, identificando los parámetro...
7
tesis de grado
Publicado 2020
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El presente estudio tuvo por objetivo, analizar las propiedades psicométricas del Pemberton Happiness Index (PHI), a partir de las evidencias de validez de contenido, de estructura interna y de asociación con otras variables. El PHI, construido por Hervás y Vázquez, mide el bienestar bajo una visión integradora que incluye el bienestar hedónico, eudaimónico y social, además de evaluar dicho constructo en dos periodos de tiempo (experiencias pasadas y experiencias recientemente vividas). La muestra estuvo conformada por 409 estudiantes universitarios de Lima Metropolitana, con edades comprendidas entre 16 y 45 años. La validez de contenido fue evaluada a partir del criterio de jueces expertos, el promedio del coeficiente V de Aiken fue superior a .50 para los criterios de claridad y relevancia; los resultados del análisis factorial confirmatorio, indican que el modelo de segundo...
8
artículo
Publicado 2020
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Objective: To determine the association between the mandibular canine index (MCI) and sex by evaluating cone-beam computed tomographies (TCHC) of patients attending a radiographic center during 2014 to 2017. Methodology: 500 TCHCs of 184 men and 316 women ages 12-50 years were assessed using RealScan 2.0 software. The distal mesio diameter of the right and left lower canines was determined, as well as the lower intercanine distance in each TCHC. Then, the presence of sexual dimorphism was determined according to the canine teeth, with the left canine presenting the highest value (5.67%), and with these data, the MCI was obtained for each TCHC. Subsequently, the standard MCI cut-off point was determined, obtaining a value of 0.264 and the real value of the sex of each TCHC was compared with the cut-off point. Results: The efficacy of the MCI was 55.43% in men and 54.75% in women (kappa = ...
9
artículo
Publicado 2018
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Objective. To determine the uterine artery mean pulsatility index and to calculate the predictive value of the uterine artery mean pulsatility index ≥ 95th centile to predict Preeclampsia in pregnant women between 11 y 14 weeks. Lugar. Fetal Medicine Unit at INMP, a teaching Hospital, between May 2009 to March 2010. Materials and methods. Participants. Pregnant women between 11 y 14 weeks.Interventions. Uterine artery Doppler was carried out at 11 y 14 weeks in pregnant women attending for routine antenatal care. The right and left uterine arteries were identified using color flow mapping and velocity waveforms were obtained using pulsed Doppler. Main outcome measures. Determination of the uterine artery mean pulsatility index, identification of ≥ 95th centile, determination of sensibility, specificity, positive and negative predictive value. Results. Of 120 patients enrolled, 24 dev...
10
artículo
Publicado 2018
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Objective. To determine the uterine artery mean pulsatility index and to calculate the predictive value of the uterine artery mean pulsatility index ≥ 95th centile to predict Preeclampsia in pregnant women between 11 y 14 weeks. Lugar. Fetal Medicine Unit at INMP, a teaching Hospital, between May 2009 to March 2010. Materials and methods. Participants. Pregnant women between 11 y 14 weeks.Interventions. Uterine artery Doppler was carried out at 11 y 14 weeks in pregnant women attending for routine antenatal care. The right and left uterine arteries were identified using color flow mapping and velocity waveforms were obtained using pulsed Doppler. Main outcome measures. Determination of the uterine artery mean pulsatility index, identification of ≥ 95th centile, determination of sensibility, specificity, positive and negative predictive value. Results. Of 120 patients enrolled, 24 dev...
11
artículo
Publicado 2020
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Objectives: to determine the relationship between obesity and the TG / HDL index in patients treated at the endocrinology outpatient service of the Sergio Bernales national hospital in 2018. Methods: the study was observational, analytical, case-control type not matched to ratio of 4: 1, with a total of 288 study subjects, 230 controls and 58 cases who met the selection criteria, involved the patients treated in the endocrinology outpatient service. The sample was simple random, the variables were included: Sex, age, Body mass index, Total cholesterol, Total triglycerides, HDL-c, LDL-c, TG / HDL index. A logistic regression model was used to obtain an Odds Ratio for the strength of association. Results: The relative frequency of obesity was 65.52% and 29.13%, for cases and controls respectively, in turn a statistical significance with Fisher's exact test, P-value 0.000. A bivariate logis...
12
artículo
Publicado 2020
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Objective: To quantify the risk of mortality using the Frailty Index, the Charlson Comorbidity Index and the Short Physical Performance Battery (SPPB) in elderly patients. Such three instruments are useful to assess and subsequently manage this group of patients. Materials and methods: An observational, cross-sectional and analytical study conducted from a secondary database analysis with a non-probability, convenience sampling. The database was collected from the original study “Prevalence and factors associated with frailty in Peruvian older adults” carried out between 2010 and 2015 in the Geriatrics Department of the Centro Médico Naval “Cirujano Mayor Santiago Távara.” A total of 1,897 participants over 60 years old were included. Results: Fragility values accounted for 51.33 %, 26.16 % and 73.47 %, according to the Frailty Index, the SPPB and the Charlson Comorbidity Index...
13
artículo
Publicado 2016
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Objective: To identify the association between the body mass index (BMI) and serum lipid levels in adult people. Material and Methods: Observational, transversal and retrospective study. Non experimental investigation design. The population was conformed for people treated in private health centers in Metropolitan Lima. The evaluations of the BMI and the laboratorial tests to know the seric concentration of lipids were taken between October 2014 and October 2015. It was determined the association between the BMI and the seric lipid levels using the Chi2 test. People with comorbidity that could modify the seric levels of lipids were excluded. Results: 39.7% of people studied were male and 60.3% were female. The average age was 34.2 years old. 40.7% (1227/3016) of population were obese and overweight. The results show a higher level of obesity or overweight in male people over female (54.6...
14
artículo
Publicado 2020
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This work estimates a dynamic factor decomposition for Peruvian inflation, using monthly disaggregated data from the consumer price index of Metropolitan Lima from January 2000 to December 2019. One of the objectives of macroeconomics is to explain the aggregate sources of changes in the prices of goods in an economy. This model makes it possible to identify idiosyncratic relative prices, aggregate relative prices and absolute prices, which represent the supply and demand shocks that can appear in an economy. The component common to all items of the CPI serves as an alternative measure of core inflation, and our results show that this component is highly correlated with core inflation published by the BCRP. In general, the results obtained in the present work are robust for different intertemporal dependency structures for the factors considered. This work estimates a dynamic factor deco...
15
artículo
Introduction. The anterior cerebral artery (ACA) resistance index (IR) is used to assess blood flow and is used to determine fetal well-being. Objective. To determine the flow of the anterior cerebral artery in very preterm infants during the first 72 hours of life. Methods. Medical records of very preterm infants treated in the Neonatal Intensive Care Unit of Edgardo Rebagliati Martins National Hospital (HNERM), EsSalud, Lima-Peru, between the years 2011-2019 were reviewed. Results. 56 medical records were reviewed that reported the index of resistance of the anterior cerebral artery in very premature infants of the HNERM. The mean values of the IR of the ACA were: 0,695 at 24 hours; 0,69 at 48 hours; and 0,667 at 72 hours. The mean systolic flow of the cerebral artery prior to 48 hours of life was similar to that of intrauterine life; at 72 hours, the...
16
artículo
Publicado 2015
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Objectives. Identify risk factors for at-term small for gestational age newborns. Materials and methods. Retrospective cohort study using data from the Maternal Perinatal Information System of the Maria Auxiliadora Hospital of Lima, from the period 2000-2010. Maternal age, parity, education level, marital status, pregestational body mass index, number of prenatal care visits, presence of conditions such as preeclampsia, eclampsia, urinary tract infection and gestational diabetes as risk factors in small for gestational age newborns were evaluated. The weight for gestational age was calculated based on Peruvian percentiles. Crude relative risk (RR) and adjusted (ARR) were calculated with confidence intervals of 95% using log-binomial generalized linear models. Results. 64,670 pregnant women were included. The incidence for small for gestational age was 7.2%. Preeclampsia (ARR 2.0, 95% CI:...
17
artículo
Publicado 2020
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Uterine artery resistance is assessed to detect inadequate placentation in pregnant women, that increases the risk to develop preeclampsia, intrauterine growth restriction and other complications associated with placental insufficiency. Objective: To identify the uterine arteries pulsatility index (UtAPI) reference chart that best fits our institutional data. Methods: Retrospective, cross-sectional study that evaluated 1 753 single pregnancies; 2 031 UtAPI measurements of the uterine arteries were obtained. Mean UtAPI was compared with the reference charts published by Gomez, Limay and Weichert. Results: There was a mild but significant (r=0.16) negative correlation between UtAPI and gestational age between 24 and 40 weeks of gestation; 6.5%, 7.5% and 15% of our measurements were above the 95 centile of respectively Weichert, Limay and Gomez reference charts. Conclusions: In our populati...
18
tesis de grado
Publicado 2020
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La presente investigación de diseño instrumental tuvo como objetivo principal determinar las propiedades psicométricas de las puntuaciones del Hurlbert Index of Sexual Fantasy adaptado en adultos de Lima, con la finalidad de contar con un instrumento adecuado para detectarlas actitudes hacia las fantasías sexuales. La muestra fue de 301 personas de Lima entre los 18 y 60 años. Se realizó una adaptación por equivalencia conceptual y cultural de los ítems, posterior a ello se encontró una adecuada validez de contenido en base a jueces expertos (V >.70). Posterior a este proceso se realizó la validez por estructura interna de las puntuaciones de la escala en el que se probó tres modelos unifactoriales, en el tercer modelo se encontró valores adecuados (X /gl= 1.87, TLI= .98, CFI= .99, SRMR= .02, RMSEA= .05) obteniendo la versión final la escala (HISF) de cinco ítems. Asimismo,...
19
tesis de grado
Publicado 2019
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El objetivo del presente trabajo es determinar cuál es el mejor método para estimar el riesgo bursátil del Índice S&P/BVL Mining Índex de la Bolsa de Valores de Lima para el periodo 2008-2017. Al respecto, se analizarán los resultados del Value at Risk (VaR) estimado bajo las metodologías de Boostrapping, simulación de Montecarlo y simulación histórica y se determinará el mejor método de estimación según pruebas de Backtesting (Pruebas de Kupiec y Christofersen) a los resultados.
20
tesis de grado
Publicado 2024
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Introducción: La esteatosis hepática, caracterizada por la acumulación anormal de grasa en el hígado, ha emergido como una preocupación significativa de salud pública. Este fenómeno no solo está vinculado a diversas condiciones médicas, sino que también se ha observado una mayor prevalencia en poblaciones específicas. En este contexto, el objetivo del presente estudio se propone investigar la prevalencia y los factores asociados a la esteatosis hepática en un grupo particularmente vulnerable: los transportistas urbanos. Métodos: estudio de diseño observacional, transversal, donde se calculó el Fatty Liver Index a 50 transportistas urbanos, y se determino la relación con factores que podrían aumentar el riesgo de padecer dicho evento, para lo cual se empleó el estadístico Chi cuadrado o la prueba exacta de Fisher según corresponda. Se utilizó la prueba de regresión l...
