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Biomedical subjects

T Duncan

Publications and source records attributed to T Duncan.

At least 55 records · Page 3Linked to original sources
PubMed1992

Alternative management of choledocholithiasis.

This paper is presented to clarify the role of ERCP in conjunction with laparoscopic cholecystectomy. As the field of surgery moves more toward less invasive procedures, our management schemata may also need revision. With the popularity of laparoscopic cholecystectomy came a large increase in the number of patients treated with cholelithiasis, and therefore an increase in patients with choledocholithiasis. The authors believe that treatment options exist to avoid open common bile duct procedure in most cases.

Adult↗
PubMed1991

Structural equation analysis of an exercise/sleep health practices model on quality of life of elderly persons.

An exercise/sleep model from past research was tested for relationships with a quality of life measure of the health status of 126 elderly persons. Past statistical analyses of this relationship used canonical correlation statistical analyses. In the following study, when structural equation analysis (LISREL VII) was applied to the same data, an altered model resulted: an exercise-only model. To examine this relationship further, researchers should employ a longitudinal design with a more comprehensive model and larger sample of elderly persons.

Activities of Daily Living↗
PubMed1989

Psychometric properties of the Intrinsic Motivation Inventory in a competitive sport setting: a confirmatory factor analysis.

The present study was designed to assess selected psychometric properties of the Intrinsic Motivation Inventory (IMI) (Ryan, 1982), a multidimensional measure of subjects' experience with regard to experimental tasks. Subjects (N = 116) competed in a basketball free-throw shooting game, following which they completed the IMI. The LISREL VI computer program was employed to conduct a confirmatory factor analysis to assess the tenability of a five factor hierarchical model representing four first-order factors or dimensions and a second-order general factor representing intrinsic motivation. Indices of model acceptability tentatively suggest that the sport data adequately fit the hypothesized five factor hierarchical model. Alternative models were tested but did not result in significant improvements in the goodness-of-fit indices, suggesting the proposed model to be the most accurate of the models tested. Coefficient alphas for the four dimensions and the overall scale indicated adequate reliability. The results are discussed with regard to the importance of accurate assessment of psychological constructs and the use of linear structural equations in confirming the factor structures of measures.

Adult↗
PubMed1979

The first year of metroprolol (Lopresor): an analysis of a newly released drug in general practice.

In 95 hypertensive patients treated in general practice, metoprolol given once daily was as effective as other beta-blockers given in an equivalent daily dose two or three times daily (P less than 0.001) and was well tolerated. Follow-up a year later produced no evidence of unusual side effects but there was a reduction in the mean daily dosage without loss of efficacy. Problems associated with surveys carried out in general practice and with the retrieval of information on the effects of long term administration in an identifiable patient population are discussed.

Adult↗