Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 1 - 10
of
5,877
As longitudinal designs in applied rese...
"... repeated measures, statistical power Formulas for estimating sample sizes are presented to provide specified levels of power for tests of significance from a longitudinal design allowing for subject attrition. These formulas are derived for a comparison of two groups in terms of single degree-of-fre ..."
Abstract
- Add to MetaCart
repeated measures, statistical power Formulas for estimating sample sizes are presented to provide specified levels of power for tests of significance from a longitudinal design allowing for subject attrition. These formulas are derived for a comparison of two groups in terms of single degree
LONGITUDINAL DESIGNS AND THEIR CONTRIBUTION TO UNDERSTANDING
"... This is the authors ’ final peer reviewed (post print) version of the item published as: Hubber, Peter 2004, Longitundinal designs and their contribution to understanding learning ..."
Abstract
- Add to MetaCart
This is the authors ’ final peer reviewed (post print) version of the item published as: Hubber, Peter 2004, Longitundinal designs and their contribution to understanding learning
Longitudinal designs, methods and analysis in psychiatric research
"... M. Hofer Objective: To outline the strengths and limitations of longitudinal research designs in psychiatry, and to describe different types of longitudinal designs and methods for analyzing longitudinal data. Method: Key references on longitudinal methods were reviewed and examples drawn from liter ..."
Abstract
- Add to MetaCart
M. Hofer Objective: To outline the strengths and limitations of longitudinal research designs in psychiatry, and to describe different types of longitudinal designs and methods for analyzing longitudinal data. Method: Key references on longitudinal methods were reviewed and examples drawn from
1Behavior of nonparametric tests in longitudinal designs
"... Nonparametric procedures need less model assumptions than the analogous pa-rametric ones. Moreover the nonparametric procedures are more robust against deviations from the model assumptions. It is well known that the Friedman test is used to analyze the treatment effect in the randomized complete bl ..."
Abstract
- Add to MetaCart
block design. The Friedman test could also be used in a longitudinal design to analyze the time effect. Alternatives are an ANOVA type test and the parametric ANOVA test for repeated measures. The three tests are compared with respect to the power and the control of the nominal level by means of a
Comparison of cross-sectional and longitudinal designs in the study of aging of upper extremity performance
, 1998
"... The purpose of the study was to compare two research designs, namely the cross-sectional design and the longitudi-nal design, in the context of upper extremity performance and age-related changes. Upper extremity performance of 360 randomly recruited, healthy, community-dwelling elderly persons was ..."
Abstract
-
Cited by 1 (0 self)
- Add to MetaCart
The purpose of the study was to compare two research designs, namely the cross-sectional design and the longitudi-nal design, in the context of upper extremity performance and age-related changes. Upper extremity performance of 360 randomly recruited, healthy, community-dwelling elderly persons
Estimation of individual genetic and environmental profiles in longitudinal designs
, 1991
"... Parameter estimates obtained in the genetic analysis of longitudinal data can be used to construct individual genetic and environmental profiles across time. Such individual profiles enable the attribution of individual phenotypic change to changes in the underlying genetic or environmental processe ..."
Abstract
-
Cited by 1 (1 self)
- Add to MetaCart
Parameter estimates obtained in the genetic analysis of longitudinal data can be used to construct individual genetic and environmental profiles across time. Such individual profiles enable the attribution of individual phenotypic change to changes in the underlying genetic or environmental
LADES: A Software for Constructing and Analyzing Longitudinal Designs in Biomedical Research
, 2014
"... One of the most important steps in biomedical longitudinal studies is choosing a good experimental design that can provide high accuracy in the analysis of results with a minimum sample size. Several methods for constructing efficient longitudinal designs have been developed based on power analysis ..."
Abstract
- Add to MetaCart
One of the most important steps in biomedical longitudinal studies is choosing a good experimental design that can provide high accuracy in the analysis of results with a minimum sample size. Several methods for constructing efficient longitudinal designs have been developed based on power analysis
Internet paradox: A social technology that reduces social involvement and psychological well-being
- American Psychologist
, 1998
"... The Internet could change the lives of average citizens as much as did the telephone in the early part of the 20th century and television in the 1950s and 1960s. Researchers and social critics are debating whether the Internet is improving or harming participation in community life and social relati ..."
Abstract
-
Cited by 362 (18 self)
- Add to MetaCart
relationships. This research examined the social and psychological impact of the lnternet on 169 people in 73 households during their first i to 2 years on-line. We used longitudinal data to examine the effects of the Internet on social involvement and psychological well-being. In this sample, the Internet
INFERENCE FROM THE INCOMPLETE LONGITUDINAL DESIGN UNDER AN ARMA COVARIANCE STRUCTURE
, 1985
"... A stochastic model is presented for the analysis of the longitudinal design, appropriate when some of the response variables are missing. The general linear model is used to relate these dependent variables to other variables which are thought to account for inherent variation. An ARMA time series r ..."
Abstract
-
Cited by 3 (1 self)
- Add to MetaCart
A stochastic model is presented for the analysis of the longitudinal design, appropriate when some of the response variables are missing. The general linear model is used to relate these dependent variables to other variables which are thought to account for inherent variation. An ARMA time series
Measurement properties of the Dizziness Handicap Inventory by cross-sectional and longitudinal designs
, 2009
"... This is an Open Access article distributed under the terms of the Creative Commons Attribution License ..."
Abstract
-
Cited by 1 (0 self)
- Add to MetaCart
This is an Open Access article distributed under the terms of the Creative Commons Attribution License
Results 1 - 10
of
5,877
