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Articles 149071 - 149100 of 160780

Full-Text Articles in Medicine and Health Sciences

An Extended General Location Model For Causal Inference From Data Subject To Noncompliance And Missing Values, Yahong Peng, Rod Little, Trivellore E. Raghuanthan Aug 2003

An Extended General Location Model For Causal Inference From Data Subject To Noncompliance And Missing Values, Yahong Peng, Rod Little, Trivellore E. Raghuanthan

The University of Michigan Department of Biostatistics Working Paper Series

Noncompliance is a common problem in experiments involving randomized assignment of treatments, and standard analyses based on intention-to treat or treatment received have limitations. An attractive alternative is to estimate the Complier-Average Causal Effect (CACE), which is the average treatment effect for the subpopulation of subjects who would comply under either treatment (Angrist, Imbens and Rubin, 1996, henceforth AIR). We propose an Extended General Location Model to estimate the CACE from data with non-compliance and missing data in the outcome and in baseline covariates. Models for both continuous and categorical outcomes and ignorable and latent ignorable (Frangakis and Rubin, 1999) …


All The News That’S Fat To Print: The American "Obesity Epidemic" And The Media, Natalie Boero Aug 2003

All The News That’S Fat To Print: The American "Obesity Epidemic" And The Media, Natalie Boero

Faculty Publications, Sociology

Increasingly the term epidemic is being used to describe the current prevalence of fatness in the United States. Skyrocketing rates of obesity among all groups of Americans, particularly children, the poor, and minorities, have become a major public health concern. Indeed, it is difficult to open a newspaper or magazine without encountering a discussion of the expanding American waistline and the health problems associated therewith. In this paper I use 751 New York Times articles on obesity to examine the media construction of the obesity epidemic. I show that there is not one dominant discourse (i.e. medicine) constructing this epidemic, …


Effect Of Achilles Tendon Lengthening On Neuropathic Plantar Ulcers: A Randomized Clinical Trial, Michael J. Mueller, David R. Sinacore, Mary Kent Hastings, Michael J. Strube, Jeffrey E. Johnson Aug 2003

Effect Of Achilles Tendon Lengthening On Neuropathic Plantar Ulcers: A Randomized Clinical Trial, Michael J. Mueller, David R. Sinacore, Mary Kent Hastings, Michael J. Strube, Jeffrey E. Johnson

Open Access Publications

No abstract provided.


Information Interface - Volume 31, Issue 2 - August/September 2003, George Washington University, Himmelfarb Health Sciences Library Aug 2003

Information Interface - Volume 31, Issue 2 - August/September 2003, George Washington University, Himmelfarb Health Sciences Library

Information Interface (1976 - 2009)

News and information about Himmelfarb Health Sciences Library of interest to users. Includes articles on computer network improvements, PDA resources, the annual book sale, and database search tips.


The Effect Of Task Versus Ego Oriented Feedback On Exercise Enjoyment, Marc Fields Aug 2003

The Effect Of Task Versus Ego Oriented Feedback On Exercise Enjoyment, Marc Fields

Masters Theses & Specialist Projects

Intrinsic motivation has been shown to be a very important factor in exercise adherence. Research has found that factors such as exercise intensity, social feedback, goal orientation and perceived climate can affect intrinsic motivation. The purpose of this study was to assess situational goal orientation, specifically whether individuals in a task induced condition or ego induced condition would report different levels of intrinsic motivation (i.e., enjoyment, tension, effort and competence during exercise). Participants (N= 114) rode on an exercise bike for 24 minutes at a moderate intensity. A MANCOVA factorial design was used to examine differences in intrinsic motivation. The …


Effects Of Perceived Costs And Rewards On Motivation And Retention Of Rape Crisis Center Volunteers, Amanda Grissom Aug 2003

Effects Of Perceived Costs And Rewards On Motivation And Retention Of Rape Crisis Center Volunteers, Amanda Grissom

Masters Theses & Specialist Projects

The purpose of this study was to obtain information that may assist Rape Crisis Center (RCC) volunteer coordinators and executive directors in the recruitment and retention of volunteers. The major hypotheses guiding this study are as follows: (a) the reasons that initially motivated volunteers to volunteer at the RCC will be the same as their reasons for why they are continuing to volunteer at the RCC and (b) volunteers at RCCs continue to volunteer because the perceived costs of volunteering do not exceed the perceived rewards of volunteering. Using a modified version of Black's (1989) questionnaire, respondents were asked to …


What's New In Spine Surgery, Jack E. Zigler, Paul A. Anderson, Scott D. Boden, Keith H. Bridwell, Alexander R. Vaccaro Aug 2003

What's New In Spine Surgery, Jack E. Zigler, Paul A. Anderson, Scott D. Boden, Keith H. Bridwell, Alexander R. Vaccaro

Open Access Publications

No abstract provided.


Acquaintance Rape Of College Students, Rana Sampson Aug 2003

Acquaintance Rape Of College Students, Rana Sampson

United States Public Health Resources

Rape is the most common violent crime on American college campuses today. This guide describes the problem of acquaintance rape of college students, addressing its scope, causes and contributing factors; methods for analyzing it on a particular campus; tested responses; and measures for assessing response effectiveness. With this information, police and public safety officers can more effectively prevent the problem.
Researchers believe that college rape prevention programs, including the most widely used ones, are insufficient. Most rapes are unreported, perhaps giving campus administrators and police the false impression that current efforts are adequate. In addition, campus police may be influenced …


Adult Survivors Of Childhood Abuse: An Analysis Of Coping Mechanisms Used For Stressful Childhood Memories And Current Stressors, Kristine T. Futa, Cindy L. Nash, David J. Hansen, Calvin P. Garbin Aug 2003

Adult Survivors Of Childhood Abuse: An Analysis Of Coping Mechanisms Used For Stressful Childhood Memories And Current Stressors, Kristine T. Futa, Cindy L. Nash, David J. Hansen, Calvin P. Garbin

Department of Psychology: Faculty Publications

Coping mechanisms used to deal with stressful childhood memories and current stressors were assessed for 196 women in each of 4 groups: no abuse history, sexual abuse history, physical abuse history, and both sexual and physical abuse history. Current psychological adjustment was also examined. Discriminant function analyses revealed a variety of significant differences between the groups in use of strategies for coping with memories of abuse or another childhood stressor. There was no relationship between childhood history of abuse and the manner in which women coped with a current stressor. Women with an abuse history reported significantly poorer adult adjustment …


Treatment Failure Of Tuberculosis Due To Concomitant Pathology, Z A. Qasim, A R. Sarwari, S M. Jilani Aug 2003

Treatment Failure Of Tuberculosis Due To Concomitant Pathology, Z A. Qasim, A R. Sarwari, S M. Jilani

Section of Pulmonary & Critical Care

No abstract provided.


The Shape Parameter Of Liposomes And Dna-Lipid Complexes Determined By Viscometry Utilizing Small Sample Volumes, Yan Sun, X. Li, Nejat Düzgüneş, Y. Takaoka, S. Ohi, S. Hirota Aug 2003

The Shape Parameter Of Liposomes And Dna-Lipid Complexes Determined By Viscometry Utilizing Small Sample Volumes, Yan Sun, X. Li, Nejat Düzgüneş, Y. Takaoka, S. Ohi, S. Hirota

All Dugoni School of Dentistry Faculty Articles

A minicapillary viscometer utilizing <0.5 ml of sample at a volume fraction of <0.1% is described. The calculated a/b of DPPC/DPPG multilamellar liposome was 1.14 as prolate ellipsoids and a/b of dioleoylpropyltrimethyl ammonium methylsulfate-DNA complex at a charge ratio of 4:1 (+/-) was 3.7 as prolate ellipsoids or 4.9 as oblate ellipsoids. The deviation of shape from perfect sphere is thus expressed quantitatively in more than two significant figures. In these measurement, the necessary amount of DNA is <0.5 mg.


An Interdisciplinary And Synthetic Approach To Ecological Boundaries, Mary L. Cadenasso, Steward T. A. Pickett, Kathleen C. Weathers, Susan S. Bell, Tracy L. Benning, Margaret M. Carreiro, Todd E. Dawson Aug 2003

An Interdisciplinary And Synthetic Approach To Ecological Boundaries, Mary L. Cadenasso, Steward T. A. Pickett, Kathleen C. Weathers, Susan S. Bell, Tracy L. Benning, Margaret M. Carreiro, Todd E. Dawson

Integrative Biology Faculty and Staff Publications

We introduce a collection of articles that proposes conceptual and methodological tools to advance the integrated study of ecological boundaries. A number of studies are germane to understanding the structure and function of boundaries over a wide array of ecological systems and scales. However, these studies have not been unified in a consistent theoretical framework. To integrate these seemingly disparate studies and to advance future research on boundaries, these articles present a common conceptual framework, a classification of the different types of boundaries and their potential functions, and statistical and modeling approaches that can be applied to a wide range …


Peritumoral Cystic Meningioma, Arshad A. Siddiqui, Junaid Asharaf, Ahmed Ali Shah Aug 2003

Peritumoral Cystic Meningioma, Arshad A. Siddiqui, Junaid Asharaf, Ahmed Ali Shah

Section of Neurosurgery

A case of 39 years old male is described who presented with headache, right-sided focal fits and decreased power in the right hand. CT scan brain showed a left fronto-parietal cystic lesion with centrolateral intramural nodule with homogenous enhancement. At surgery, the extra-axial lesion with cyst containing xanthochromic fluid had a well-defined capsule that could easily be separated from the peri-lesional cortical surface. The dural-based nodule with its cyst wall was resected in toto. The histopathology of mural nodule was reported as meningioma while the cyst wall histology revealed meningothelial cells.


Validation Of A 3-Day Physical Activity Recall Instrument In Female Youth, Russell R. Pate, Rebecca Ross, Marsha Dowda, Stewart G. Trost, John R. Sirard Aug 2003

Validation Of A 3-Day Physical Activity Recall Instrument In Female Youth, Russell R. Pate, Rebecca Ross, Marsha Dowda, Stewart G. Trost, John R. Sirard

Faculty Publications

The purpose of this study was to examine the validity of the 3-Day Physical Activity Recall (3DPAR) self-report instrument in a sample of eighth and ninth grade girls (n= 70, 54.3% white, 37.1% African American). Criterion measures of physical activity were derived using the CSA 7164 accelerometer. Participants wore a CSA monitor for 7 consecutive days and completed the self-report physical activity recall for the last 3 of those days. Self-reported total METs, 30-min blocks of MVPA, and 30-min blocks of VPA were all significantly correlated with analogous CSA variables for 7 days (r=0.35-0.51; P<0.01) and 3 days (r …


Group Therapy For Incarcerated Women Who Experienced Interpersonal Violence: A Pilot Study, Rebekah G. Bradley, Diane R. Follingstad Aug 2003

Group Therapy For Incarcerated Women Who Experienced Interpersonal Violence: A Pilot Study, Rebekah G. Bradley, Diane R. Follingstad

CRVAW Faculty Journal Articles

This study evaluated effectiveness of group therapy for incarcerated women with histories of childhood sexual and/or physical abuse. The intervention was based on a two-stage model of trauma treatment and included Dialectical Behavior Therapy skills and writing assignments. We randomly assigned 24 participants to group treatment (13 completed) and 25 to a no-contact comparison condition (18 completed). We evaluated treatment effects, using the Beck Depression Inventory, Inventory of Interpersonal Problems, and Trauma Symptom Inventory. The data demonstrate significant reductions in PTSD, mood, and interpersonal symptoms in the treatment group.


Barriers To Communication In Healthcare: Perceptions Of The Rural Elderly, Nicole Arachikavitz Aug 2003

Barriers To Communication In Healthcare: Perceptions Of The Rural Elderly, Nicole Arachikavitz

Masters Theses & Specialist Projects

There is presently a lack of research on the types of communication barriers faced by the rural elderly when accessing health care. Furthermore, much of the research on the rural elderly is old and outdated. Thus, this thesis research sought to identify and explore communication barriers faced by the rural elderly when accessing healthcare. Specifically, the research in this thesis seeks to answer the following research questions: What types of communication barriers do rural elderly face when seeking health care? More specifically, what sorts of patient-provider communication barriers will the rural elderly of South Central Kentucky identify? An interview guide …


Analysis Of Soil Lead Levels In An Historic District Of A South Central Kentucky City, Robert Cummins Aug 2003

Analysis Of Soil Lead Levels In An Historic District Of A South Central Kentucky City, Robert Cummins

Masters Theses & Specialist Projects

Lead in soil has been shown to be a significant pathway of lead exposure in children. Several factors including age of housing units, exterior composition, and paint loading may affect the amount of lead present in the soil. The purpose of this study was to analyze soil lead levels on properties located in an historic district and relate those levels to the variables previously mentioned. A total of 30 soil samples were collected from housing units in a nationally recognized historic district. Concentrations of lead in the soil were analyzed using a NITON X-ray Fluorescence Spectrum Analyzer, following EPA Method …


People With Disabilities On Tribal Lands: Education, Health Care, Vocational Rehabilitation, And Independent Living, A. Kauffman, M. Whelshula, V. Paternoster, T. Spellman, W. Thompson, A. Walline Aug 2003

People With Disabilities On Tribal Lands: Education, Health Care, Vocational Rehabilitation, And Independent Living, A. Kauffman, M. Whelshula, V. Paternoster, T. Spellman, W. Thompson, A. Walline

Native Health Database Full Text

This project examined research on health, rehabilitation, independent living, and education issues that affect people with disabilities living in Indian Country. The report discusses views and perspectives of American Indialaska Native people with disabilities, tribal leaders, and federal agency representatives identified as productive in meeting the needs of people with disabilities residing in tribal lands. This report also assesses and recommends government-to-government (state to sovereign tribal to U.S. government) improvements in relationships needed for effective coordination across existing federally funded projects/programs. In addition, a Toolkit guide providing resource information was developed for use by consumers, tribal communities, and people at …


Dose Coefficients For Radionuclides Produced In A Spallation Neutron Source, John P. Shanahan Aug 2003

Dose Coefficients For Radionuclides Produced In A Spallation Neutron Source, John P. Shanahan

Transmutation Sciences Physics (TRP)

Internal and external dose coefficient values have been calculated for 14 anthropogenic radionuclides which are not currently presented in Federal Guidance Reports No. 11, 12, and 13 or Publications 68 and 72 of the International Commission on Radiological Protection. Internal dose coefficient values are reported for inhalation and ingestion of 1 μm and 5 μm particulates along with the f1 values and absorption types for the adult worker. Internal dose coefficient values are also reported for inhalation and ingestion of 1 μm particulates as well as the f1 values and absorption types for members of the public. Additionally, external dose …


Inside Unlv, Gian Galassi, Carol C. Harter, Gale Sinatra Aug 2003

Inside Unlv, Gian Galassi, Carol C. Harter, Gale Sinatra

Inside UNLV

No abstract provided.


Computational Models For Diffusion Of Second Messengers In Visual Transduction, Harihar Khanal Aug 2003

Computational Models For Diffusion Of Second Messengers In Visual Transduction, Harihar Khanal

Publications

The process of phototransduction, whereby light is converted into an electrical response in retinal rod and cone photoreceptors, involves, as a crucial step, the diffusion of cytoplasmic signaling molecules, termed second messengers. A barrier to mathematical and computational modeling is the complex geometry of the rod outer segment which contains about 1000 thin discs. Most current investigations on the subject assume a well-stirred bulk aqueous environment thereby avoiding such geometrical complexity. We present theoretical and computational spatio-temporal models for phototransduction in vertebrate rod photoreceptors, which are pointwise in nature and thus take into account the complex geometry of the …


Isolated Congenital Bilateral Absence Of Vas Deferens (Cbavd): A Rare Anomaly And Diagnostic Dilemma, M Moazzam, Syed Raziuddin Biyabani, C K. Jadoon Aug 2003

Isolated Congenital Bilateral Absence Of Vas Deferens (Cbavd): A Rare Anomaly And Diagnostic Dilemma, M Moazzam, Syed Raziuddin Biyabani, C K. Jadoon

Section of Urology

No abstract provided.


Organizational Characteristics And Restraint Use For Hospitalized Nursing Home Residents., Meg Bourbonniere, Neville E. Strumpf, Lois K. Evans, Greg Maislin Aug 2003

Organizational Characteristics And Restraint Use For Hospitalized Nursing Home Residents., Meg Bourbonniere, Neville E. Strumpf, Lois K. Evans, Greg Maislin

College of Nursing Faculty Papers & Presentations

OBJECTIVES: To examine the effect of organizational characteristics on physical restraint use for hospitalized nursing home residents.

DESIGN: Secondary analysis of data obtained between 1994 to 1997 in a prospective phase lag design experiment using an advanced practice nurse (APN) intervention aimed at reducing physical restraint for a group of hospitalized nursing home residents.

SETTING: Eleven medical and surgical units in one 600-bed teaching hospital.

PARTICIPANTS: One hundred seventy-four nursing home residents aged 61 to 100, hospitalized for a total of 1,085 days.

MEASUREMENTS: Physical restraint use, APN intervention, age, perceived fall risk, behavioral phenomena, perceived treatment interference, mental state, …


What Is Wrong With Medical Audit?, J H. Rizvi Aug 2003

What Is Wrong With Medical Audit?, J H. Rizvi

Department of Obstetrics & Gynaecology

No abstract provided.


Next-Of-Kin Perceptions Of Physician Responsiveness To Symptoms Of Hospitalized Patients Near Death, Joel C. Cantor, Jan Blustein, Matthew J. Carlson, David A. Gould Aug 2003

Next-Of-Kin Perceptions Of Physician Responsiveness To Symptoms Of Hospitalized Patients Near Death, Joel C. Cantor, Jan Blustein, Matthew J. Carlson, David A. Gould

Sociology Faculty Publications and Presentations

Many different medical providers visit critically ill patients during a hospitalization, and patients and family members may not feel any physician is truly in charge of care. This study explores whether perceiving that a physician was clearly in charge is associated with reports by surviving next of kin about the responsiveness of physicians to symptoms in hospitalized patients near the end of life. We conducted telephone interviews with surviving next of kin of adult patients (n = 1107) who died in one of five New York City teaching hospitals between April 1998 and June 1999 after a minimum 3-day inpatient …


Ccr5 Mediates Specific Migration Of Toxoplasma Gondii—Primed Cd8+ Lymphocytes To Inflammatory Intestinal Epithelial Cells, Souphalone Luangsay, Lloyd H. Kasper, Nicolas Rachinel, Laurie A. Minns Aug 2003

Ccr5 Mediates Specific Migration Of Toxoplasma Gondii—Primed Cd8+ Lymphocytes To Inflammatory Intestinal Epithelial Cells, Souphalone Luangsay, Lloyd H. Kasper, Nicolas Rachinel, Laurie A. Minns

Dartmouth Scholarship

Toxoplasma gondii, an obligate intracellular parasite, can invade intestinal epithelial cells and elicit a robust Th1 immune response. In this model of intestinal inflammation, CD8+ intraepithelial lymphocytes (IELs) secrete transforming growth factor (TGF)-β, which appears necessary for the maintenance of homeostasis in the intestine. However, the mechanism responsible for the IEL migration to the inflamed intestine is still unclear.An in vitro coculture cell system was used to quantify the IEL attraction by an infected intestinal epithelial cell line (m-ICcl2). We used CCR5-deficient mice to determine which chemokine receptor—chemokine interaction could be responsible for the recruitment of …


Adrenocortical Adenoma And Carcinoma: Histopathological And Molecular Comparative Analysis, A. Stojadinovic, M. F. Brennan, A. Hoos, A. Omeroglu, Denis H. Y. Leung, M. Dudas, A. Nissan, C. Cordon-Cardo, R.A. Ghossein Aug 2003

Adrenocortical Adenoma And Carcinoma: Histopathological And Molecular Comparative Analysis, A. Stojadinovic, M. F. Brennan, A. Hoos, A. Omeroglu, Denis H. Y. Leung, M. Dudas, A. Nissan, C. Cordon-Cardo, R.A. Ghossein

Research Collection School Of Economics

We compared histomorphological features and molecular expression profiles of adrenocortical adenomas (ACAd) and carcinomas (ACCa). A critical histopathological review (mean, 11 slides per patient) was conducted of 37 ACAd and 67 ACCa. Paraffin-embedded tissue cores of ACAd (n = 33) and ACCa (n = 38) were arrayed in triplicate on tissue microarrays. Expression profiles of p53, mdm-2, p21, Bcl-2, cyclin D1, p27, and Ki-67 were investigated by immunohistochemistry and correlated with histopathology and patient outcome using standard statistical methodology. Median follow-up period was 5 years. Tumor necrosis, atypical mitoses, and >1 mitosis per 50 high-power fields were factors that were …


The Virulence Activator Apha Links Quorum Sensing To Pathogenesis And Physiology In Vibrio Cholerae By Repressing The Expression Of A Penicillin Amidase Gene On The Small Chromosome, Gabriela Kovacikova, Wei Lin, Karen Skorupski Aug 2003

The Virulence Activator Apha Links Quorum Sensing To Pathogenesis And Physiology In Vibrio Cholerae By Repressing The Expression Of A Penicillin Amidase Gene On The Small Chromosome, Gabriela Kovacikova, Wei Lin, Karen Skorupski

Dartmouth Scholarship

Activation of the tcpPH promoter on the Vibrio pathogenicity island by AphA and AphB initiates the Vibrio cholerae virulence cascade and is regulated by quorum sensing through the repressive action of HapR on aphA expression. To further understand how the chromosomally encoded AphA protein activates tcpPH expression, site-directed mutagenesis was used to identify the base pairs critical for AphA binding and transcriptional activation. This analysis revealed a region of partial dyad symmetry, TATGCA-N6-TNCNNA, that is important for both of these activities. Searching the V. cholerae genome for this binding site permitted the identification of a second one upstream of a …


Genetic Polymorphisms Of The Interleukin-1 Gene And Early Marginal Bone Loss Around Endosseous Dental Implants, Hitomi Shimpuku, Yasuhiro Nosaka, Tatsuya Kawamura, Yoichi Tachi, Mitsuko Shinohara, Kiyoshi Ohura Aug 2003

Genetic Polymorphisms Of The Interleukin-1 Gene And Early Marginal Bone Loss Around Endosseous Dental Implants, Hitomi Shimpuku, Yasuhiro Nosaka, Tatsuya Kawamura, Yoichi Tachi, Mitsuko Shinohara, Kiyoshi Ohura

Faculty, Staff and Student Publications

Dental implant surgery commonly proceeds in two stages. It is generally accepted that bone loss around implants does not occur at stage-II surgery because implants do not receive mechanical loading. However, early marginal bone loss around implants occasionally does occur during the healing period. Genetic polymorphisms in the interleukin-1 (IL-1) gene have been reported to be important for bone homeostasis and susceptibility to bone disease. We therefore investigated whether the idiopathic early marginal bone loss around implants is related to polymorphisms in the IL-1 gene. We performed a case-control study. Patients demonstrating marginal bone loss around implants at stage-II surgery …


Diagnosis Of Pulmonary Embolism With Helical Ct Scan, M U. Usman, V Bari, Javed Yakoob, Murad M. Khan Dr. Aug 2003

Diagnosis Of Pulmonary Embolism With Helical Ct Scan, M U. Usman, V Bari, Javed Yakoob, Murad M. Khan Dr.

Department of Radiology

Objective: To determine the role of helical C.T. scan in the diagnosis of pulmonary embolism.SETTING: Radiology department, Aga Khan University Hospital. One year prospective study May 2001 to May 2002.Methods: Sixty patients suspected of having pulmonary embolism were included in this study. Helical C.T. scan chest was performed from aortic arch to lung bases with intravenous contrast medium. Images were acquired in mediastinal and lung windows. Image interpretation was performed on the console and hard copies for main branch and segmental thrombus.Results: Fifteen patients were diagnosed of having pulmonary embolism on C.T. scan. Clinical correlation and follow up with pulmonary …