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Showing results 1 - 25 of 47 for "frailty"

The Frailty Myth: Redefining the Physical Potential of Women and Girls
The Frailty Myth: Redefining the Physical Potential of Women and Girls
Can women be equal to men as long as men are physically stronger? And are men, in fact, stronger?These are key questions that Colette Dowling, author of the bestselling The Cinderella Complex, raises in her provocative new book. The myth of female frailty, with its roots in nineteenth-century medicine and misogyny, has had a damaging effect on women's health, social status, and physical safety. It is Dowling's controversial thesis that women succumb to societal pressures to appear weak in order to seem more "feminine."The Frailty Myth presents new evidence that girls are weaned from the use of their bodies even before they begin school. By adolescence, their strength and aerobic powers have started to decline unless the girls are exercising vigorously--and most aren't. By sixteen, they have already lost bone density and turned themselves into prime candidates for osteoporosis. They have also been deprived of motor stimulation that is essential for brain growth.Yet as breakthroughs among elite women athletes grow more and more astounding, it begins to appear that strength and physical skill--for all women--is only a matter of learning and training. Men don't have a monopoly on physical prowess; when women and men are matched in size and level of training, the strength gap closes. In some areas, women are actually equipped to outperform men, due partly to differences in body structure, and partly to the newly discovered strengthening benefits of estrogen.Drawing on extensive research in motor development, performance assessment, sports physi-ology, and endocrinology, Dowling presents an astonishing picture of the new physical woman. And she creates a powerful argument that true equality isn't possible until women learn how to stand up for themselves--physically.
$16 Go to
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Modeling Survival Data Using Frailty Models
Modeling Survival Data Using Frailty Models
When designing and analyzing a medical study, researchers focusing on survival data must take into account the heterogeneity of the study population: due to uncontrollable variation, some members change states more rapidly than others. Survival data measures the time to a certain event or change of state. For example, the event may be death, occurrence of disease, time to an epileptic seizure, or time from response until disease relapse. Frailty is a convenient method to introduce unobserved proportionality factors that modify the hazard functions of an individual. In spite of several new research developments on the topic, there are very few books devoted to frailty models. Modeling Survival Data Using Frailty Models covers recent advances in methodology and applications of frailty models, and presents survival analysis and frailty models ranging from fundamental to advanced. Eight data on survival times with covariates sets are discussed, and analysis is carried out using the R statistical package. This book covers: Basic concepts in survival analysis, shared frailty models and bivariate frailty models Parametric distributions and their corresponding regression models Nonparametric Kaplan–Meier estimation and Cox's proportional hazard model The concept of frailty and important frailty models Different estimation procedures such as EM and modified EM algorithms Logrank tests and CUSUM of chi-square tests for testing frailty Shared frailty models in different bivariate exponential and bivariate Weibull distributions Frailty models based on Lévy processes Different estimation procedures in bivariate frailty models Correlated gamma frailty, lognormal and power variance function frailty models Additive frailty models Identifiability of bivariate frailty and correlated frailty models The problem of analyzing time to event data arises in a number of applied fields, such as medicine, biology, public health, epidemiology, engineering, economics, and demography. Although the statistical tools presented in this book are applicable to all these disciplines, this book focuses on frailty in biological and medical statistics, and is designed to prepare students and professionals for experimental design and analysis.
$72 Go to
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The Frailty Myth: Redefining the Physical Potential of Women and Girls
The Frailty Myth: Redefining the Physical Potential of Women and Girls
Can women be equal to men as long as men are physically stronger? And are men, in fact, stronger?These are key questions that Colette Dowling, author of the bestselling The Cinderella Complex, raises in her provocative new book. The myth of female frailty, with its roots in nineteenth-century medicine and misogyny, has had a damaging effect on women's health, social status, and physical safety. It is Dowling's controversial thesis that women succumb to societal pressures to appear weak in order to seem more "feminine."The Frailty Myth presents new evidence that girls are weaned from the use of their bodies even before they begin school. By adolescence, their strength and aerobic powers have started to decline unless the girls are exercising vigorously--and most aren't. By sixteen, they have already lost bone density and turned themselves into prime candidates for osteoporosis. They have also been deprived of motor stimulation that is essential for brain growth.Yet as breakthroughs among elite women athletes grow more and more astounding, it begins to appear that strength and physical skill--for all women--is only a matter of learning and training. Men don't have a monopoly on physical prowess; when women and men are matched in size and level of training, the strength gap closes. In some areas, women are actually equipped to outperform men, due partly to differences in body structure, and partly to the newly discovered strengthening benefits of estrogen.Drawing on extensive research in motor development, performance assessment, sports physi-ology, and endocrinology, Dowling presents an astonishing picture of the new physical woman. And she creates a powerful argument that true equality isn't possible until women learn how to stand up for themselves--physically.
$7.37 Go to
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