Universal utility of psychoanalytic theory for nursing practice models.
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Toward development and application of a qualitative theory of hospital utilization.
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Diagnosis-Related Groups↗
Crisis theory: application and utilization with hemodialysis patients and families.
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Adult↗
[T2*-contrast perfusion study--principles, theory and clinical utility in evaluating cerebral hemodynamics].
Contrast-enhanced dynamic study is easily feasible with a clinical MR system, for evaluating cerebral perfusion. A bolus of the paramagnetic contrast agents such as Gd-DTPA produces inhomogenity of the regional magnetic field between the capillaries and extravascular proton, and causes a decrease of signal intensity in the perfused region with T2*-weighted sequences. Echo planar imaging (EPI) is suitable for contrast-enhanced dynamic study, because it is markedly susceptible and provides high temporal-resolution. Tracer kinetic approaches are used for analysis of the dynamic data to acquire various perfusion parameters such as time delta R2* curve, rCBF, rCBV and MTT. T2*-weighted contrast-enhanced perfusion imaging is useful, especially, for detecting hyperacute ischemia and its therapeutic window, and depicting vasculature and ability of the brain tumors.
Blood Flow Velocity↗
The clinical director in the NHS: utilizing a role-theory perspective.
Reviews the role of the clinical director in the NHS, based on data collected in a qualitative research study. Utilizes role theory to invite insight into a relatively new but important managerial role. Suggests that effectiveness in the role may be measured by the extent to which managers are able to meet the expectations of their role set, and also that the overall effectiveness of the clinical direction may be the extent to which he or she is able to influence, adapt, modify or change these role expectations.
Hospitals, Public↗
Utilizing tenets of inoculation theory to develop and evaluate a preventive alcohol education intervention.
With the advent of the Surgeon General's Report, Healthy People, a renewed interest in and concern for the health-risky practices of the school aged has emerged. Moreover, because the mortality rates for the 15 to 24 year age group continues to increase while the mortality rates for every other age group continues to decline, a school health education imperative has become prevention-based interventions. The experimental, prevention-based alcohol education program reported here describes one such intervention directed at 9th grade students. The program was grounded on the principles of Inoculation Theory and evaluated using a Solomon Four-Group Design. Results indicate that the formulation of preventive alcohol education programs utilizing Inoculation Theory in a school setting is both feasible and productive in achieving designated objectives. Longitudinal assessment of the subjects with regard to their alcohol-related behavior is continuing throughout their high school careers.
Adolescent↗
Visibility management in school and beyond: a qualitative study of gay, lesbian, bisexual youth.
Grounded theory was utilized to develop a theory of gay, lesbian, and bisexual (GLB) youths' interactions with and response to their environment. Data included in-depth interviews of 20 GLB youth. The central phenomenon that emerged from the qualitative data analysis was the strategy of visibility management. Visibility management refers to the dynamic, ongoing process by which GLB youth make careful, planned decisions about whether they will disclose their sexual orientation, and, if they decide to disclose, to whom and how they disclose, and how they continue to monitor the presentation of their sexual orientation in different environments. The process of visibility management is proposed as a key construct in GLB identity development. Implications are proposed for working with GLB youth and their families and for making schools safer for GLB youth.
Adolescent↗
Utility of the PASS theory and cognitive assessment system for Dutch children with and without ADHD.
This study examined the utility of the Planning, Attention, Simultaneous, Successive (PASS) theory of intelligence as measured by the Cognitive Assessment System (CAS) for evaluation of children with attention-deficit/hyperactivity disorder (ADHD). The CAS scores of 51 Dutch children without ADHD were compared to the scores of a group of 20 Dutch children with ADHD. The scores of the Dutch children were also compared to American standardization samples of children with and without ADHD. The findings showed that children with ADHD in both countries demonstrated relatively low scores on the Planning and Attention scales of the CAS, but average scores on the Simultaneous and Successive scales. These findings are similar to previously published research suggesting that the PASS theory, as operationalized by the CAS, has sensitivity to the cognitive processing difficulties found in some children with ADHD.
Attention Deficit Disorder with Hyperactivity↗
Development of a planning and evaluation methodology for assessing the contribution of theory to a diabetes prevention lifestyle intervention.
The benefits of utilizing and measuring application of theory for behavior change programs are numerous, including the emergence of new theories and theoretically bound strategies. Despite recent attempts to make theory use more salient, there remains a dearth of practical frameworks for the development and evaluation of theory-based programs. Without literature documenting how theories have been specifically applied to interventions and their evaluation, health educators may not be well prepared to utilize theory for the design, implementation, or as a focus of the evaluation. Using a case study example of a diabetes prevention program, this article describes how theory was used for the program design and the evaluation and provides a framework for using theory in other programs. Issues discussed include: the challenges in successfully utilizing theory for intervention development and the processes of developing theoretically based instruments.
Behavior Therapy↗
Mental energy: Assessing the motivation dimension.
Content-based theories of motivation may best uti lize the meta-theory of work motivation. Process-based theories may benefit most from adopting Locke and Latham's goal-setting approaches and measures. Decision-making theories should utilize the measurement approach operationalized by Ilgen et al. Sustained effort theories should utilize similar approaches to those used in numerous studies of intrinsic motivation, but the measurement of which is typically observational or attitudinal. This paper explored the implications of the four approaches to studying motivation on the newly estab ished model of mental energy. The approach taken for examining motivation informs the measurement of mental energy. Specific recommendations for each approach were developed and provided. As a result of these efforts, it will now be possible to diagnose, measure, and experimentally test for changes in human motivation, which is one of the three major components of mental energy.
Decision Making↗
Attachment theory: a model for health care utilization and somatization.
OBJECTIVE: Attachment theory proposes that cognitive schemas based on earlier repeated experiences with caregivers influence how individuals perceive and act within interpersonal relationships. We hypothesized that medical patients with two types of insecure attachment-preoccupied and fearful attachment-would have higher physical symptom reporting compared with those with other attachment styles, but that preoccupied attachment would be associated with higher and fearful attachment with lower primary care utilization and costs. METHODS: In a large sample of adult female primary care health maintenance organization patients (N = 701), we used analysis of covariance and Poisson regressions to determine whether attachment style was significantly associated with 1) symptom reporting based on questions from the somatization section of the Diagnostic Interview Schedule and 2) contemporaneous automated utilization and cost data. RESULTS: Attachment style was significantly associated with symptom reporting (p =.02), with patients with preoccupied (p =.03) and fearful (p =.003) attachment having a significantly greater number of physical symptoms compared with secure patients. There were no significant differences in medical comorbidity between attachment groups. Attachment was also significantly associated with primary care visits and costs. Patients with preoccupied attachment had the highest primary care costs and utilization, whereas patients with fearful attachment had the lowest. CONCLUSIONS: These results suggest that attachment style is an important factor in assessing symptom perception and health care utilization. Despite being on opposite ends of the utilization spectrum, patients with preoccupied and fearful attachment have the highest symptom reporting. These data challenge the observation that increased symptom reporting is uniformly associated with increased utilization in medical patients.
Adult↗
Aberration measurement of projection optics in lithographic tools based on two-beam interference theory.
The degradation of image quality caused by aberrations of projection optics in lithographic tools is a serious problem in optical lithography. We propose what we believe to be a novel technique for measuring aberrations of projection optics based on two-beam interference theory. By utilizing the partial coherent imaging theory, a novel model that accurately characterizes the relative image displacement of a fine grating pattern to a large pattern induced by aberrations is derived. Both even and odd aberrations are extracted independently from the relative image displacements of the printed patterns by two-beam interference imaging of the zeroth and positive first orders. The simulation results show that by using this technique we can measure the aberrations present in the lithographic tool with higher accuracy.
Journal Article↗
Organizational theory and the structuring of clinical laboratories.
The utility of theory is not restricted to the field of pathology and the "hard" sciences. It is, for example, a mistake to assume that "common sense" is all that is required for laboratory directors to successfully fulfill their management duties. Organizational theory offers a valuable perspective for pathologists as they contemplate the structure of the clinical laboratory and prepare for the future.
Hospital Departments↗
"Biological markers" and psychiatric diagnosis: risk-benefit balancing using ROC analysis.
Although the clinical interview retains a central role in psychiatric diagnosis, recent research has suggested that "biological markers" may ultimately increase the precision of clinicians' nosologic and therapeutic decisions. Evaluating and operationalizing diagnostic tests require mathematical techniques that reflect the tests' essential features and limitations, and that guide clinicians in particular clinical situations. In this article we describe a technique that combines signal detection theory and utility-based decision theory, and apply the technique to published data in which sleep architecture was used as a biological marker for depression. We show how outcome utilities influence the optimum REM latency cut-off and show how this relationship is influenced by the prevalence of depression in the population being tested. We also make specific calculations of the practical limits that must be imposed on uncertainties in utilities to operationalize a diagnostic test for a specific clinical situation.
Biomarkers↗
Alcoholism recovery in lesbian women: a theory in development.
Utilizing the modified practice-theory strategy for theory building, a provisional theoretical model was developed to describe alcoholism recovery in lesbian women. Assumptions are acknowledged, key concepts are identified, and propositions are formulated for the purpose of generating nursing knowledge about a significant health problem in this aggregate of women. The theory's implications for nursing research, practice, and further theory development are discussed.
Alcoholism↗
The infant mortality-fertility debate: some international evidence.
"The aim of this paper is to analyze empirically the causal relationship, if any, between infant mortality and fertility in thirty-five developing countries." The focus is on possible relationships between the infant mortality rate and the fertility rate. "The hypothesis that infant mortality causes fertility is tested. The possibility of a 'reverse causation' is also analyzed. A one-sided distributed lag test as proposed by Granger...is employed." The results are analyzed in light of several versions of the mortality-fertility proposition, including demographic transition theory, choice theory, Ricardian theory, and the modern economic theory of population.
Behavior↗
Automata network theories in immunology: their utility and their underdetermination.
Small networks of threshold automata are used to model complex interactions between populations of regulatory cells (helpers and suppressors, antigen specific and anti-idiotypic) which participate in the immune response. The models, being discrete and semiquantitative, are well adapted to the situation of incomplete information often encountered in vivo. However, the dynamics of many different network structures usually end up in the same attractor set. Thus, many different theories are equivalent in their explicative power for the same facts. This property, known as underdetermination of the theories by the facts, is given a quantitative estimate. It appears that such an underdetermination, as a kind of irreducible complexity, can be expected in many in vivo biological processes, even when the number of interacting and functionally coupled elements is relatively small.
Animals↗
The utility of self-care theory as a theoretical basis for self-neglect.
AIM: This paper sets out to explore the utility of self-care theory in understanding self-neglect. Further theoretical development of both self-care and self-neglect theory and attending core concepts is an important objective. BACKGROUND: The notions of self-neglect and self-care are frequently linked in the literature. The relationship between self-neglect and self-care is not clear and the strengths and limitations in using self-care theory to facilitate a greater understanding of self-neglect will be addressed. Specifically the issues of self-care agency, self-care requisites, objectivity, class and culture, and lifestyle choice will be critically evaluated in the context of self-neglect theory. CONCLUSION: Self-care theory has a useful role to play in furthering our understanding of self-neglect. Self-care theory is able to explain some aspects of self-neglect but not others, although this may be a reflection of the relatively underdeveloped state of self-care theories or alternatively may reflect a more fundamental limitation in our ability to fully explain human behaviour.
Attitude to Health↗