نتایج جستجو برای: شاخص z score

تعداد نتایج: 437310  

2011
T. O. Adeyemi

This study explained the use of standard scores otherwise known as z scores for research in educational management. Since a score is a unit distance between two limits, the individual given a score in percentage might have actually scored between the lower limit and the upper limit of that score. A score therefore represent the mid-point between the lower limit and the upper limit of the score....

Journal: :Journal of patient safety 2014
J Matthew Austin Guy D'Andrea John D Birkmeyer Lucian L Leape Arnold Milstein Peter J Pronovost Patrick S Romano Sara J Singer Timothy J Vogus Robert M Wachter

OBJECTIVE To develop a composite patient safety score that provides patients, health-care providers, and health-care purchasers with a standardized method to evaluate patient safety in general acute care hospitals in the United States. METHODS The Leapfrog Group sought guidance from a panel of national patient safety experts to develop the composite score. Candidate patient safety performance...

2007
Elisa Ricci Tijl De Bie Nello Cristianini

We consider a new discriminative learning approach to sequence labeling based on the statistical concept of the Z -score. Given a training set of pairs of hidden-observed sequences, the task is to determine some parameter values such that the hidden labels can be correctly reconstructed from observations. Maximizing the Z -score appears to be a very good criterion to solve this problem both the...

ژورنال: :مجله دانشگاه علوم پزشکی کردستان 0
بهزاد عنایتی behzad enayati orthopedic surgeon, shariati hospital, tehran university of medical sciences, tehran, iran.متخصص ارتوپدی، بیمارستان شریعتی، دانشگاه علوم پزشکی تهران، تهران، ایران سعید رضا مهرپور saeed reza mehrpour orthopedics dept., shariati hospital, tehran university of medical sciences, tehran, iran.گروه ارتوپدی، بیمارستان شریعتی، دانشگاه علوم پزشکی تهران، تهران، ایران بابک عنایتی babak enayati orthopedic surgeon, arak university of medical sciences, arak, iran.متخصص ارتوپدی ،دانشگاه علوم پزشکی اراک، اراک، ایران مریم دبیری maryam dabiri general practitioner, tehran university of medical sciences, tehran, iranپزشک عمومی، دانشگاه علوم پزشکی تهران، تهران، ایران طیب رمیم tayeb ramim general practitioner, researcher, sina trauma and surgery research center. tehran university of medical sciences, tehran, iran (coressponding author) tel;+98-21-66348529پزشک عمومی، محقق،مرکز تحقیقات تروما و جراحی سینا ، دانشگاه علوم پزشکی تهران، تهران، ایران (مولف مسوول) تلفن.66348529-021

چکیده مقدمه: استئوپروز بدون علامت بوده و معمولاً زمانی مشخص می گردد که بیمار دچار fragility fracture گردد. این نوع شکستگی با حداقل تروما، مثلاً افتادن از حالت ایستاده، روی می دهد ومحل های متداول شکستگی عبارتند از: ستون فقرات، لگن، ساعد وپروگزیمال هومروس. هدف از انجام این مطالعه بررسی توصیفی تعداد و موارد fragility fracture و شیوع ابتلا به استئوپروز ثانویه در این افراد بود. روش انجام کار: این مطال...

2011
Alicia Matijasevich Marie-Jo Brion Ana M Menezes Aluísio J D Barros Iná S Santos Fernando C Barros

OBJECTIVE To explore the effects of maternal smoking during pregnancy on offspring growth using three approaches: (1) multiple adjustments for socioeconomic and parental factors, (2) maternal-paternal comparisons as a test of putative intrauterine effects and (3) comparisons between two birth cohort studies. METHODS Population-based birth cohort studies were carried out in Pelotas, Brazil, in...

Journal: :Proteins 2000
M Kann B Qian R A Goldstein

The growth in protein sequence data has placed a premium on ways to infer structure and function of the newly sequenced proteins. One of the most effective ways is to identify a homologous relationship with a protein about which more is known. While close evolutionary relationships can be confidently determined with standard methods, the difficulty increases as the relationships become more dis...

2016
Alison Parkes Helen Sweeting Robert Young Daniel Wight

BACKGROUND Pathways leading to socioeconomic inequalities in young children's body mass index (BMI) are not well understood. This study examined whether parenting related to the physical and social context of children's food consumption helped to explain associations between maternal educational level and child BMI trajectory. METHODS The study used data from 2957 families in a nationally rep...

Journal: :The international journal of behavioral nutrition and physical activity 2016
Antje Hebestreit Gianvincenzo Barba Stefaan De Henauw Gabriele Eiben Charalampos Hadjigeorgiou Éva Kovács Vittorio Krogh Luis A Moreno Valeria Pala Toomas Veidebaum Maike Wolters Claudia Börnhorst

BACKGROUND Evidence for the effect of dietary energy on BMI z-scores in young children is limited. We aim to investigate cross-sectional and longitudinal effects of daily energy intake (EI) on BMI z-scores of European boys and girls considering growth-related height dependencies of EI using residual EI. METHODS To investigate cross-sectional and longitudinal effects of daily energy intake (EI...

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