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Biomedical subjects

A von Eye

Publications and source records attributed to A von Eye.

34 records · Page 2Linked to original sources

[Small group tests against Victor types and syndromes].

Victor's recent alternative model for configural frequency analysis (CFA) estimates expected frequencies for hypothesized type cells from a quasi-independence log-linear model. The tests against types use chi-square components. A comparison with the binomial test shows that the standard errors of the chi-square components can be too small when samples are small. From simulation results formulas for the standard error that consider sample size are derived. The paper shows that these formulas do not suggest nonconservative decisions. Empirical data examples from legasthenia research illustrate the methodological findings.

Analysis of Variance↗

Text recall in adulthood: the roles of text imagery and orienting tasks.

Three experiments were conducted to investigate dual-code theory and the levels-of-processing approach in discourse processing. Three concrete and three abstract tests were constructed to be equivalent in the degree to which they were perceived as concrete vs. abstract. All experiments presented concrete and abstract texts under three orienting tasks. Results of the first experiment showed main effects for both text concreteness and orienting tasks and an interaction that can be described by the lack of a difference between the recall rates for the concrete and the abstract texts under the intentional-learning condition. In the second experiment, longer texts were used and a second trial was introduced. The interaction was not replicated. There were main effects for concreteness, orienting tasks, and trials. The third experiment replicated Experiment 2 with subjects in their late 40s and over 70. Main effects were obtained as before. Age interacted with both orienting task and concreteness, indicating that older adults gain less than middle-aged adults from intentional-learning instructions and benefit less from highly concrete texts. The discussion focuses on the relation of Materials and Subjects as factors to dual-code theory and levels of processing approach.

Adolescent↗

Suicide trends in Canada and West Germany: an application of configural frequency analysis.

Canadian and West German successful suicides for the years 1974-1977 were used to fit a log-linear model relating age, method of suicide, gender, and country to suicide frequency. Configural frequency analyses (CFA) were performed to complement the log-linear analyses, as well as to obtain more information about the data. A log-linear model involving all four three-way interactions among these variables was required to explain the observed frequency distribution in a satisfactory manner. Results from this study support McIntosh and Santos's (1982) findings that each gender displays its own unique pattern of methods of suicide. This study also showed that each group has its own unique pattern of methods of suicide within each specific gender group. Results from CFA showed different patterns in the trends of suicide for each age x gender x country x method of suicide grouping. These results can be used to help clarify the intricate relationships among the factors that are important in explaining suicide trends.

Adolescent↗

[Configuration cluster analysis as an alternative to configuration frequency analysis].

The paper discusses configural cluster analysis (CCA) as an alternative to configural frequency analysis (CFA). CFA defines types as deviations from the assumption of no interactions among the variables. CCA defines clusters as deviations from the stronger assumption of a total lack of effects, in the contingency table. Variations of CCA as aggregating CCA, hierarchical CCA, m-sample CCA, and CCA of profile shifts are discussed. An example analyzes data from research on depression.

Cluster Analysis↗

[Syndrome assessment using a generalized interaction structure analysis].

The concept of conventional interaction-structure-analysis (ISA) consists of comparing and analyzing two groups of variables. In the present paper this concept is thus generalized that more than two groups of variables can be analyzed. Data from depression research are analyzed by forming three groups of symptoms. The discussion expounds on strategies of data analysis with generalized ISA (GISA).

Attitude to Death↗

[Configuration frequency analysis. XXIII. Types and syndromes of a higher order].

Configural Frequency analysis (CFA) is a method for the detection of significantly high or low frequencies in multivariate contingency tables. As a criterion for the comparisons. CFA uses expected frequencies from log-linear models which reflect assumptions on the association structure of the variables under study. The present paper extends models of CFA such that triplet associations or even higher order associations can be considered. Examples use empirical data from research on depression in children. Results show the existence of higher order types.

Child↗

[Use of the Küchenhoff continuity correction of the Lehmacher CFA test in search of types of sociogenic behavior disorders].

To avoid anticonservative rejections of CFA null hypotheses when using Lehmacher's test Küchenhoff suggested to apply a continuity correction. This correction reduces the differences between observed and expected cell frequencies by a constant. The present paper discusses this variant of Lehmacher's test. Application of the correction for continuity in the search for types of sociogene neuropathology are presented. The discussion covers the effectivity of CFA tests in connection with Holm's method of alpha adjustment.

Child↗

[Configuration frequency analysis. XXII a. Type normative scale pattern].

The paper entitled "Configural frequency analysis XXII. Types of normatively patterned scales" starts from assuming that a battery of clinical test scales is measuring just one dimension of pathology (general factor). If a battery is really measuring more than one dimension (multiple group factors) of pathology, the sample of testees will produce types of binarily patterned scales. An individual profil is to be interpreted as a profil if it is representing a so called scale pattern type; otherwise it is to be interpreted by its level only. The scale pattern CFA is identified as a variety of second order CFA and is discussed as to its implications in clinical diagnosis.

Humans↗

Types of change: application of configural frequency analysis in repeated measurement designs.

Many researchers are concerned both with intraindividual change patterns and interindividual differences and similarities in those change patterns. Configural Frequency Analysis (CFA) provides a way to identify overrepresentations (types) and underrepresentations (antitypes) in the frequencies of multiple variable classifications organized to reflect patterns of change. Three methods of CFA for analyzing repeated measures data are considered. To establish trends, two of them require at least ordinal data and the third requires interval data. Data analysis and the interpretation of results are illustrated. CFA is compared with residual analysis from log-linear modeling.

Aging↗

The odds of resilience.

This article presents sample research designs for the investigation of questions concerning resilience. Sample hypothesis from specific research designs are described in the form of odds ratios.

Adaptation, Psychological↗

Sanitary product use by white, black, and Mexican American women.

In 1988-89, the use of menstrual sanitary products was surveyed among 699 white, 477 black, and 425 Mexican American women to detect age and racial or ethnic differences in product use that might explain the differences in the incidence of toxic shock syndrome (TSS) in these demographic categories. Forty percent of the women had never used tampons. Significantly more whites used tampons alone (26 percent) or with pads (36 percent) than did blacks. Proportionately more blacks used tampons alone (16 percent) or with pads (27 percent) compared with Mexican Americans, 11 percent of whom used tampons alone and 21 percent of whom used tampons and pads. Since a substantial proportion of black women used tampons, racial-ethnic variations in use patterns alone cannot completely explain the low incidence of TSS among black women. Tampon use started in the early teen years, but women in the age group 20-29 had the highest frequency of use of tampons either alone (26 percent) or with pads (33 percent). These percentages suggest that age-related differences in product use may not explain the age-related differences in the incidence of TSS. Fear was the most common specific reason for not using tampons in response to information about TSS. Decreased use of tampons in response to information about TSS was reported by 39 percent of whites, 50 percent of blacks, 46 percent of Mexican Americans, and by 36 percent of women less than 19 years, 41 percent of 20-29-year-olds, and 47 percent of women 30 years and older.

Adolescent↗