Search results for "contingency"
showing 10 items of 94 documents
S08-01 - Cochrane Reviews of Pharmacological and Psychological Interventions for Antisocial Personality Disorder (ASPD)
2010
IntroductionASPD has a prevalence of 2-3% in the general population but rates in prison have been reported as 50% to 75%. ASPD is associated with significant psychiatric and medical comorbidity, high offending rates, poor psychosocial adaptation and premature death. Outcomes are poor. There is little consensus regarding the most effective intervention for the condition.Aims and objectivesTo conduct systematic literature reviews to identify randomised controlled trials for either pharmacological or psychological interventions for ASPD.MethodsSystematic literature reviews (Cochrane reviews).ResultsFor the review on psychological interventions only 11 studies could be included with a total of …
The Use of Financial and Non-Financial Performance Measures: A Contingency Perspective
2013
Financial and non-financial index and indicators are applied in industry for measure firms’ business and operational performance. Different mix of measures are usually implemented in practice and we argue that, to a certain extent, this variability can be explained according to some contextual factors, as for instance environmental uncertainty, decentralization, type of strategic organizations and managerial practices.We develop hypothesis on the association between the usage of certain performance measures and this factors in a contingency perspective. Exploratory research based on large scale survey on manufacturing firms supports our investigation and test of the research hypothesis. R…
Does supply chain quality integration guarantee ambidexterity? Contingency and configuration perspectives on their relationships
2020
While researchers have thoroughly investigated the impact of supply chain quality integration (SCQI) on competitive performance, they have paid less attention to its possible effects on a firm’s ca...
On Rao Score and Pearson X2 Statistics in Generalized Linear Models
2005
The identity of the Rao score and PearsonX 2 statistics is well known in the areas where the latter was first introduced: goodness-of-fit in contingency tables and binary responses. We show in this paper that the same identity holds when the two statistics are used for testing goodness-of-fit of Generalized Linear Models. We also highlight the connections that exist between the two statistics when they are used for the comparison of nested models. Finally, we discuss some merits of these unifying results.
Automatic regrouping of strata in the goodness-of-fit chi-square test
2019
Pearson’s chi-square test is widely employed in social and health sciences to analyze categorical data and contingency tables. For the test to be valid, the sample size must be large enough to provide a minimum number of expected elements per category. This paper develops functions for regrouping strata automatically no matter where they are located, thus enabling the goodness-of-fit test to be performed within an iterative procedure. The functions are written in Excel VBA (Visual Basic for Applications) and in Mathematica. The usefulness and performance of these functions is illustrated by means of a simulation study and the application to different datasets. Finally, the iterative use of …
Catecholamine Response Curves of Male Hypertensives Identified by Lehmacher's Two Sample Configural Frequency Analysis
1997
A new application of LEHMACHER'S (1980) marginal homogeneity sign tests is given by analysis of bivariate response curves (or response surfaces) in two unpaired samples of hypertensive versus normotensive patients. Rationale and computations are illustrated by empirical data from sympathomedullary stress research.
Some determinants of the migration of professional manpower.
1975
Abstract Determinants of migration of professional manpower are investigated using data from a 1970 survey of immigrants to the United States. From a respondent’s stated “intent to stay” in the United States and five other characteristics a six-dimensional contingency table is formed. We find a well-fitting log-linear model for this table. Thus, we establish the importance of selected determinants of migration and present a table of predicted rates of intent to stay in the United States
Introduction: Situatedness and Place
2018
Over the last two or three decades, the spatio-temporal contingency of human life has become an important topic of research in a broad range of different disciplines including the social sciences, the cultural sciences, the cognitive sciences, and philosophy. Significantly, however, this research topic is referred to in quite different ways: While some researchers refer to it in terms of the “situatedness” of human experience and action, others refer to it in terms of “place”, emphasizing the “power of place” and advocating a “topological” or “topographical turn” in the context of a larger “spatial turn”. In this chapter, we will first give a short introduction to place and situatedness as …
III: „Relatives Risiko” und „NNT” - anschauliche Maße für binäre Daten
2002
Description of categorial data can often be based on contingency tables. However, percentages appearing in such tables must be meaningful: For most applications, it may be useful to employ factors of causal influence as the row entry variable and relate percentages to sub-groups defined by these row entries ("row percentages"). The comparison of success frequencies (i. e. binary information on "therapy success yes/no") may be based on two therapies, respective success frequencies and their ratio, the relative risk. In addition the success frequencies' difference, the absolute (or excess) risk, can be transformed into the "number needed to treat" (NNT). Many international journals demand thi…
Utility of the Mantel-Haenszel Procedure for Detecting Differential Item Functioning in Small Samples
2004
Sample-size restrictions limit the contingency table approaches based on asymptotic distributions, such as the Mantel-Haenszel (MH) procedure, for detecting differential item functioning (DIF) in many practical applications. Within this framework, the present study investigated the power and Type I error performance of empirical and inferential criteria for DIF detection in small samples. Sample sizes (50/50, 100/50, 200/50, and 100/100 for the reference and focal groups, respectively), ability distributions (equal and unequal), and amount of DIF (moderate and high) were manipulated. The results show the advantages of employing theMHchi-square statistic using high levels of significance (•…