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Showing 1 to 20 of 140 for “"percentiles"”.
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Estimating the Difference of Percentiles from Two Independent Populations.
… develop confidence intervals for a difference of percentiles from two independent normal populations, two independent exponential populations and two independent uniform populations. In our study, we mainly focus on the maximum likelihood to develop our confidence intervals. The efficiency of this …
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Interval Estimation for the Ratio of Percentiles from Two Independent Populations.
<p>Percentiles are used everyday in descriptive statistics and data analysis. In real life, many quantities are normally distributed and normal percentiles are often used to describe those quantities. In life sciences, distributions like exponential, uniform, Weibull and many others are used to …
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Percentiles de circunferencia de cintura en escolares de Bogotá, Colombia Estudio FUPRECOL
Objetivo: Determinar la distribución por percentiles de la circunferencia de cintura en una población escolar de Bogotá, Colombia, pertenecientes al estudio FUPRECOL. Métodos: Estudio transversal, realizado en 3.005 niños y 2.916 adolescentes de entre 9 y 17,9 años de edad, de Bogotá, Colombia. Se …
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Percentiles of Traditional and New Measures of Physical Activity Based On Accelerometry
<p>This paper looks at sex- and age-specific percentiles curves for several measures of physical activity by gender and age group. Accelerometer data from healthy participants in the National Health and Nutrition Examination Survey study, a program of studies designed to assess the health and …
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Optimización de las curvas personalizadas de percentiles de peso fetal y neonatal del Hospital Universitario de Puerto Real
… el crecimiento fetal, se utilizan curvas de percentiles: las de referencia o poblacionales (basadas en edad gestacional y sexo) y las customizadas o personalizadas (que incorporan características maternas y fetales para reflejar el potencial de crecimiento individual). El diagnóstico de …
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An exploratory study of the relationship between in-training examination percentiles of anesthesiology residents and the vermunt inventory of learning styles
This study explored the relationship between anesthesiology residents' In Training Examination (ITE) percentile ranks and learning styles and domains with the variables of gender, ethnicity, and postgraduate year (PGY). The ITE is a national examination given annually as a measure of cognitive …
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Observed trends in daily extreme temperature indices (percentiles) over the Western and Eastern Cape of South Africa for the period 1960 to 2005
This thesis has investigated changes in the frequency of extreme cold and hot tails in the probability distributions (percentile indices) of minimum and maximum temperature events over the Western Cape and Eastern Cape for the period 1960-2005. The focus was to determine whether the changes in hot …
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The Impact of Teacher-Student Relationships and Classroom Engagement On Student Growth Percentiles of 7th and 8th Grade Students in One Rural School in Southwest Georgia
… a relatively new metric, student growth percentiles, as part of teacher and leader evaluations. Student growth plays a tremendous role in evaluations, accounting for up to 50% of a teacher or leader evaluations, yet there is little to no peer reviewed research on classroom factors that …
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A Quantitative Analysis of the Effect of Integrated Co-Teaching on the Growth of English Language Arts and Mathematics Achievement in Elementary School Students Using Student Growth Percentiles
<p>This causal-comparative study provides a descriptive analysis of the impact of participation in co-taught classrooms compared to traditional classrooms on the academic growth of students with and without disabilities. This issue is examined in English language arts and mathematics using the New …
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Körperfettmessung bei Kindern und Jugendlichen - Alters- und geschlechtsbezogene Perzentilen von Hautfaltendicke, Taillen- und Hüftumfang sowie Taille-Hüft-Index und Taille-Größe-Index: Ergebnisse einer pädiatrischen Kohorte in Deutschland (LIFE Child)
… years in age. Continuous age- and gender-related percentiles (3rd, 10th, median, 90th, 97th percentiles) were estimated using Cole's LMS method. Results: For biceps and triceps ST, boys show a peak at the beginning of adolescence with a subsequent decrease, while percentile values among girls rise …
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Longitudinal Associations Between Sedentary Behavior and Health Outcomes During Childhood
… at the 10th, 25th, 50th, 75th and 90th BMI percentiles over time. Objectively measured sedentary behavior was the main predictor and adjustment was made for moderate-to-vigorous physical activity (MVPA), gender, race, maternal education, hours of sleep and healthy eating scores. Spending …
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Three essays on earnings and earnings inequality in Hong Kong: 1991-2011
… earnings gap widened especially at the lower percentiles of the earnings distribution. The Oaxaca-Blinder decomposition estimates suggest that more than one third of the gender earnings gap at the mean level could be accounted for by the covariate differences. The earnings differential between …
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Risk Metrics and the Five-Level System for the Youth Level of Service/Case Management Inventory (YLS/CMI): A Comparison of Two Samples of Justice-Involved Youth in Canada
… developed guidelines, applying metrics like percentiles, risk ratios, and recidivism rates to generate five risk levels (Hanson et al., 2017). While these levels have been applied to adult measures, their application to youth assessments remains unexplored. The Youth Level of Service/Case …
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The development and pilot testing of a Cholesterol Saturated Fat Index (CSI) scorecard for dietary self-monitoring
… scores from the 10th, 25th, 50th, 75th, and 90th percentiles from a pool of 400 usual diet food records. Two-tailed, one-sample t-tests demonstrated that the CSI Scorecard scores were not statistically significant at only the 25th and 75th percentiles. Therefore, in three of five food record …
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Impacts of Father Input Support Programme ob beneficiaries: The case of Gwembe District
… regression at the 5th, 10th, 50th and 90th percentiles of the maize production distribution in two phases - with and without control for endogeneity. The analysis reveals that the largest production impact is on the farmers at the 50th percentile. There is also significant dependence on the …
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Assessment of Anthropometric Development of Transgender and Gender Non Binary Youth Assigned Female at Birth Across Prepubertal and Pubertal Growth
… downward over time. The mean loss in height percentiles was 20.3 ± 18.7% (mean ± S.D). Height percentiles were also examined in a larger group of patients (n=125) receiving GAHT. The mean height percentiles after GAHT displayed conservation from prior to GAHT (1.8 ± 7.2%.). Conclusions: One …
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Extreme events over the contiguous United States portrayed in a CESM-WRF dynamical downscaling framework
… events are defined according to exceedances of percentiles of the distribution of precipitation and temperature variables (typically the 90th, 95th, and 99th percentiles), as well as the actual magnitudes corresponding to the percentiles. After applying a bias-correction to all three variables, …
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Risk from network disruptions in an aerospace supply chain
… of the model was used to develop confidence percentiles for the complete duration times. Through testing of the various scenarios using the model we learned that most disruptions will add a deterministic time to the total estimated duration time of the system, regardless of the location of …
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An Explorational Study of Educational Leaders' Attitudes, Opinions, Understanding, and Application of Student Growth Percentile (SGP) Data
<p>Student Growth Percentiles have recently become popular as a way to report student progress over time. Because of the perception that they are relatively simple to understand, they have also become a popular tool to use when evaluating teachers and school-based administrators, even though this …
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