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PubMed1984

Masters of surgery.

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Academic Dissertations as Topic↗
PubMed2004

[Quality analysis of the statistical used resources (material and methods section) in thesis projects of a university department].

INTRODUCTION AND OBJECTIVES: Studies about quality in thesis and investigation projects in biomedical sciences are unusual, but very important in university teaching because is necessary to improve the quality elaboration of the thesis. The objectives the study were to determine the project's quality of thesis in our department, according to the fulfillment of the scientific methodology and to establish, if it exists, a relation between the global quality of the project and the statistical used resources. MATERIAL AND METHODS: Descriptive study of 273 thesis projects performed between 1995-2002 in surgery department of the Zaragoza University. The review realized for 15 observers that they analyzed 28 indicators of every project. Giving a value to each of the indicators, the projects qualified in a scale from 1 to 10 according to the quality in the fulfillment of the scientific methodology. RESULTS: The mean of the project's quality was 5.53 (D.E: 1.77). In 13.9% the thesis projects was concluded with the reading of the work. The three indicators of statistical used resources had a significant difference with the value of the quality projects. DISCUSSION: The quality of the statistical resources is very important when a project of thesis wants to be realized by good methodology, because it assures to come to certain conclusions. In our study we have thought that more of the third part of the variability in the quality of the project of thesis explains for three statistical above-mentioned articles.

Academic Dissertations as Topic↗
PubMed1995

A computer-based international 'thesis-line'?

Doctoral theses represent a largely inaccessible mine of useful information. There is no simple way of finding out whether someone in another institution has written a thesis that is relevant to your own work, or of reading it. Here, we describe how this situation could be remedied by making theses freely available and easy to search in an international 'Thesis-Line' accessible through the Internet.

Academic Dissertations as Topic↗
PubMed2001

The first description of rheumatoid arthritis. Unabridged text of the doctoral dissertation presented in 1800.

This unabridged version of the dissertation presented in 1800 by Augustin Jacob Landré-Beauvais for his medical doctorate describes a disease different in many ways from the condition known since Hippocrates as gout. The patients were nine long-term residents of the Salpêtrière hospice in Paris. After reviewing the main features of ordinary or regular gout, Landré-Beauvais points out that the disease he calls "asthenic gout" exhibits several distinctive features, including predominance in women, a chronic course, involvement of many joints from the onset, and a decline in general health. Despite the tentative tone of his title ("Should one recognize...), he clearly is convinced that he is describing an as yet unreported entity, as indicated by the last sentence of his dissertation: "...we must recognize the existence of a new form of gout under the designation primary asthenic gout" And although he stops short of emancipation from the term "gout", which had been used for centuries to designate specific joint manifestations, he makes several keenly discerning observations -- particularly regarding the influence of psychological factors, the need for gentle treatments, and the inappropriateness of bloodletting - thus breaking free from contemporary doctrine. This text is acknowledged as the first description of rheumatoid arthritis. A brief biography of Landré-Beauvais is provided.

Academic Dissertations as Topic↗
PubMed1993

Old data, new interpretation: a re-analysis of Sir Aubrey Lewis' M.D. thesis.

Sir Aubrey Lewis studied 61 depressives in considerable detail, principally cross-sectionally but also by reviewing progress. He concluded that he could find no qualitative distinctions between the depressed patients and thus established himself as a strong and influential advocate of the unitary view of depression (i.e. that depression varies dimensionally, not categorically). Subsequently, Kiloh & Garside (proponents of the binary view of two depressive 'types') coded the Lewis data and undertook a principal components analysis. They claimed success in distinguishing 'endogenous' and 'neurotic' depressive types within Lewis' sample. In this paper we re-analyse the data set using both a latent class categorical approach and mixture analyses. We suggest that any demonstration of sub-types was limited by relative homogeneity of the sample (in that up to 80% had probable or possible psychotic conditions), and by Lewis rating a number of important features (e.g. delusions) dimensionally rather than categorically. Nevertheless, we identify one categorical class (essentially an agitated psychotic depressive condition) and a residual (presumably heterogeneous) class. The presence of those two classes was supported by demonstrating bimodality in composite scores derived from the fourteen differentiating clinical features (and not evident when all clinical features were considered), and formally confirmed by mixture analyses. Membership of the categorical class was determined principally by psychotic features (delusions and hallucinations) and by objectively-judged psychomotor disturbance, and we consider the nature of that 'class'. Lewis' data set is unusual (in having self-report and observationally rated data), and historically important in demonstrating that conclusions may depend on the choice of variables examined and analytical approaches.

Academic Dissertations as Topic↗
PubMed2000

Incorporating data from dissertations in systematic reviews.

OBJECTIVES: To determine whether unpublished dissertations are an important source of trials for systematic reviews. METHODS: In a review of infant massage, we identified 17 dissertations. We recorded whether each dissertation was included in the review and, if so, whether it contributed data to any analyses. RESULTS: Thirteen dissertations were excluded, 11 because of poor reporting of methodology. Three dissertations were also published as journal papers. The data from the remaining dissertation were not included in any analysis. Reviewing data on the Cochrane Library, only one of 878 reviews included data from a dissertation that might have changed a review's conclusions. CONCLUSIONS: Searching for and retrieving unpublished dissertations involves considerable time and effort and appears to influence the conclusions of a review only rarely.

Academic Dissertations as Topic↗
PubMed1975

Personality research: components of variance attributable to the person and the situation.

Studies involving personality and situational variables were surveyed. Studies permitting determination of main effects and interactions involving these variables have increased since 1950. In one comparison, situational main effects were significant in 65.5% of the cases, whereas the figure was 31% for individual difference variables and 59.9% for interactions. In another comparison, 35% of situational main effects accounted for more than 10% of the variance, compared with 29% for personality indexes; 19% of the situational variable effects accounted for more than 20% of the variance, compared with 14% of the personality main effects. Low percentages of variance were accounted for by all variables investigated: situational, personality, demographic, and interactions among these variables.

Academic Dissertations as Topic↗
PubMed2004

Using dissertations to examine potential bias in child and adolescent clinical trials.

The major youth psychotherapy meta-analyses have relied on published studies, which may have led to biased effect size estimates. To examine this possibility, the authors compared 121 dissertations with 134 published studies and found the following: (a) few differences on individual methodological variables, but, overall, stronger methodology in dissertations; (b) no differences in the steps taken to ensure treatment integrity; and (c) a mean dissertation effect size less than half that of published studies. The effect size difference remained robust across tests controlling for all reliable method differences. The findings suggest that dissertations are so strong, both methodologically and clinically, that they warrant inclusion in child psychotherapy meta-analyses and that previous meta-analyses, by excluding them, may have overestimated treatment effects.

Academic Dissertations as Topic↗