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Biomedical subjects

Timothy S Carey

Publications and source records attributed to Timothy S Carey.

At least 19 recordsLinked to original sources
PubMed2006

A simple and valid tool distinguished efficacy from effectiveness studies.

OBJECTIVE: To propose and test a simple instrument based on seven criteria of study design to distinguish effectiveness (pragmatic) from efficacy (explanatory) trials. STUDY DESIGN: Currently no validated definition of effectiveness studies exists. We asked the directors of 12 Evidence-based Practice Centers to select six studies each: four that they considered to be examples of effectiveness trials and two considered efficacy studies. We then applied our proposed criteria to test the construct validity using the selected studies as if they had been identified by a gold standard. RESULTS: Based on the rationale to identify effectiveness studies reliably with minimal false positives (i.e., a high specificity), a cutoff of six criteria produced the most desirable balance between sensitivity and specificity. This setting produced a specificity of 0.83 and a sensitivity of 0.72. CONCLUSION: When applied in a standardized manner, our proposed criteria can provide a valid and simple tool to distinguish effectiveness from efficacy studies. The applicability of systematic reviews can improve when analysts place more emphasis on the generalizability of included studies. In addition, clinicians can also use our criteria to determine the external validity of individual studies, given an appropriate population of interest.

Drug Therapy↗
PubMed2006

Surrogates' perceptions about feeding tube placement decisions.

OBJECTIVES: (1) To determine surrogates perceptions about who made the decision to place the feeding tube and who they would have preferred to have made the decision. (2) To determine surrogates' perceptions of the information they received to make this decision. METHODS: Structured interviews with 246 surrogate decision-makers. RESULTS: Fifty-five percent of surrogates felt that the decision was made primarily by the surrogate, but 75% would prefer that the decision be shared with the physician. Surrogates reported that they discussed the benefits (80%) and the risks (72%) of feeding tube placement and discussed what life would be like with the feeding tube (65%) and without the feeding tube (67%). They also reported being asked if they understood the information (85%) and their thoughts about placement (56%). Despite receiving this information, 28 to 41% reported wanting more information about these aspects. CONCLUSION: Surrogates would have preferred greater physician participation in decisions about feeding tube placement and many reported that their informational needs were not completely met. PRACTICE IMPLICATIONS: These results suggest that physicians may be justified in taking a more active role in feeding tube decisions with surrogates and that many surrogates desire more information than is required by standards of informed decision making.

Activities of Daily Living↗
PubMed2006

Expectations and outcomes of gastric feeding tubes.

PURPOSE: To compare expected outcomes with actual outcomes from tube feeding in adult patients. SUBJECTS AND METHODS: This prospective cohort study was conducted in two North Carolina hospitals. Surrogates were interviewed shortly after feeding tube insertion and at 3- and 6-month follow-up; chart abstraction and death certificate review also were carried out. Participants were surrogate decision-makers for consecutive adult patients who received new feeding tubes. RESULTS: There were 288 patients with surrogate decision-makers enrolled. Mean age was 65 years; 30% had a primary diagnosis of stroke, 16% neurodegenerative disorder, 20% head and neck cancer, and 30% other diagnoses. At 3 months, 21% of patients had died, and 6-month mortality was 30%. At 3 months, 38% of survivors were residing in a nursing home, and 27% had the feeding tube removed. Patients were impaired in most activities of daily living (ADLs) with little change over time. Medical complications were common: 25% of patients had decubitus ulcers at 3 months, and 24% had at least one episode of pneumonia. Perceived global quality of life was poor at 4.6 (on a 0-10 scale) at baseline, and surrogates anticipated this would improve to 8.0 with tube feeding. Family surrogates' expectations for improvement from the feeding tube were very high at baseline and remained so at 3 and 6 months. CONCLUSIONS: Families' high expectations of benefit from tube feeding are in contrast to clinical outcomes. Providers and families need better information about the outcomes of this common procedure.

Activities of Daily Living↗
PubMed2006

Types of medication errors in North Carolina nursing homes: a target for quality improvement.

BACKGROUND: Medication errors are an important problem in nursing homes, but little is known about the types of medications involved in errors in this setting. Gaining a better understanding of the types of medications commonly involved in medication errors in nursing homes would be an important step toward quality improvement. OBJECTIVES: This study sought to describe the types of medication errors most frequently reported to a statewide repository by North Carolina nursing homes. We also examined whether nursing homes reporting an error involving a drug on the updated Beers list of medications considered potentially inappropriate for use in the elderly were likely to report a greater number of medication errors or more harmful medication errors compared with nursing homes that did not report such an error. METHODS: Medication errors were defined as preventable events that had the potential to cause/lead to or actually caused/led to inappropriate medication use or patient harm. We analyzed summary reports of medication errors submitted to the State of North Carolina by licensed nursing homes for the 9-month period from January 1, 2004, to September 30, 2004, using a Web-based reporting system. Drugs commonly involved in medication errors were summarized for all nursing homes in the state. Errors involving medications on the updated Beers list also were identified. Nursing homes were profiled and compared according to the type of medication error and whether the error reached the patient and/or caused harm. RESULTS: Among the 384 licensed nursing homes included in our analysis, 9272 medication errors were reported. The specific medication involved was documented for 5986 of these errors. The medications most commonly involved in an error were lorazepam (457 errors [8%]), warfarin (349 [6%]), insulin (332 [6%]), hydrocodone and hydrocodone combinations (233 [4%]), furosemide (173 [3%]), and the fentanyl patch (150 [3%]). The medication errors disproportionately included central nervous system agents (16%) and analgesics (11%). Medications considered potentially inappropriate in the elderly were frequently involved in the reported errors (10% of all reported errors), with the greatest number of such errors associated with lorazepam (457 [8%]), alprazolam (130 [2%]), and digoxin (74 [1%]). Nursing homes reporting potentially inappropriate drugs among their 10 most common medication errors also reported a significantly greater mean number of errors compared with nursing homes that did not report such errors (26.9 vs 17.6, respectively; P < 0.001), as well as a significantly greater number of errors that reached the patient (6148 vs 1393; P < 0.001). CONCLUSION: Based on the experience in North Carolina, quality improvement efforts in nursing homes should focus on the medications commonly involved in errors and should continue to discourage or closely monitor the use of medications considered potentially inappropriate in the elderly.

Adverse Drug Reaction Reporting Systems↗
PubMed2006

Effectiveness of physical therapy for the management of chronic spine disorders: a propensity score approach.

BACKGROUND AND PURPOSE: Evidence on the effectiveness of physical therapy for the management of chronic spine disorders is limited. The purpose of this study was to use a large current database, the National Spine Network database, to assess the effectiveness of physical therapy in the management of chronic spine disorders. SUBJECTS: The participants were people who had spine problems lasting 3 months or longer and who were seen for an initial visit and a follow-up visit (N=4,479) at 1 of 17 US spine centers. METHODS: A propensity score approach was used to create a matched sample of participants who received physical therapy (intervention group) and participants who did not receive physical therapy (control group). The 2 groups were similar with regard to more than 50 baseline characteristics. Outcomes were assessed with the Oswestry Disability Index (ODI) and the 36-Item Short-Form Health Survey (SF-36). RESULTS: Both the intervention and control groups improved between the initial and the follow-up visits on ODI scores and on SF-36 physical function, role physical, and bodily pain scores. Although the amount of improvement in the outcome measures was significantly greater for the intervention group than for the control group, the differences were small (3-5 points). When the subgroup of participants who had the greatest propensity for receiving physical therapy was examined, differences in the amount of improvement between the intervention and control groups were larger (5-13 points). DISCUSSION AND CONCLUSION: Physical therapy was effective in the management of chronic spine disorders in participants with the greatest propensity for receiving physical therapy. When the entire sample was considered, differences in the amount of improvement between the intervention and control groups were not clinically relevant.

Adolescent↗
PubMed2005

Physician-patient racial concordance, continuity of care, and patterns of care for hypertension.

To assess the effects of physician-patient racial concordance and continuity of care on hypertension outcomes, we described patterns of care for hypertension; we used cross-tabulations and repeated measures (generalized estimating equations) analyses with panel survey data from elderly persons interviewed and examined in 1987 and 1990. Continuity of care was associated with recognition of hypertension, receipt of medication, and lower incidence of undetected hypertension. Physician race had little effect, but continuity is important for successful management of hypertension in older persons.

Aged↗
PubMed2005

Efficacy and safety of second-generation antidepressants in the treatment of major depressive disorder.

BACKGROUND: Reviews have compared the efficacy and tolerability of newer second-generation antidepressants with those of placebo or older treatments, but comparative evidence for use of second-generation antidepressants to treat major depressive disorder has not been evaluated. PURPOSE: To systematically evaluate comparative data on the efficacy, effectiveness, and tolerability of commonly prescribed second-generation antidepressants (selective serotonin reuptake inhibitors, bupropion, duloxetine, mirtazapine, and venlafaxine) in the treatment of major depressive disorder. DATA SOURCES: MEDLINE, EMBASE, and PsychLit; the Cochrane Library; and the International Pharmaceutical Abstracts were searched from January 1980 through February 2005 for reviews; randomized, controlled trials; meta-analyses; and observational studies. STUDY SELECTION: The authors reviewed 46 head-to-head randomized, controlled trials comparing one second-generation antidepressant with another. Twenty-four observational studies and placebo-controlled trials were also included for assessment of safety and tolerability. DATA EXTRACTION: Two researchers independently reviewed titles and abstracts. Trained reviewers abstracted data from each study and assigned an initial quality rating. A second reviewer verified the data extraction and quality rating. DATA SYNTHESIS: According to fair to good evidence, the second-generation antidepressants that were compared had only minimal differences in efficacy, and 88% of comparative efficacy studies reported no statistically significant difference in any outcome measure at the end of the study. One effectiveness trial rated good and 2 effectiveness trials rated fair reported no statistically significant differences in primary outcome measures for compared drugs. Meta-analyses showed a modest but statistically significant additional treatment effect for sertraline and venlafaxine compared with fluoxetine. About 96% of comparative trials were sponsored by or had at least 1 author affiliated with a pharmaceutical company; the remaining trials did not report funding sources. Adverse event profiles differed among drugs; however, the degree and quality of adverse event assessment varied and only 13% of trials used a standardized scale to assess adverse events. LIMITATIONS: Quantitative analyses could not be done for many drug comparisons because the quantity and quality of the evidence were inadequate. Most published evidence was from trials sponsored by pharmaceutical companies, and publication bias may have occurred. CONCLUSIONS: Overall, second-generation antidepressants probably do not differ substantially for treatment of major depressive disorder. Choosing the agent that is most appropriate for a given patient is difficult.

Antidepressive Agents, Second-Generation↗
PubMed2005

Developing effective interuniversity partnerships and community-based research to address health disparities.

Health disparities are an enormous challenge to American society. Addressing these disparities is a priority for U.S. society and especially for institutions of higher learning, with their threefold mission of education, service, and research. Collaboration across multiple intellectual disciplines will be critical as universities address health disparities. In addition, universities must collaborate with communities, with state partners, and with each other. Development of these collaborations must be sensitive to the history and unique characteristics of each academic institution and population. The authors describe the challenges of all three types of collaboration, but primarily focus on collaboration between research-intensive universities and historically black colleges and universities. The authors describe a four-year collaboration between Shaw University and the University of North Carolina at Chapel Hill (UNC-CH). These universities strategically developed multiple research initiatives to address health disparities, building on modest early success and personal relationships. These activities included participation by Shaw faculty in faculty development activities, multiple collaborative pilot studies, and joint participation in securing grants from the Agency for Health care Research and Quality of the federal Department of Health and Human Services and the National Institutes of Health, including a P-60 Project EXPORT center grant. These multiple activities were sometimes led by UNC-CH, sometimes by Shaw University. Open discussion of problems as they arose, realistic expectations, and mutual recognition of the strengths of each institution and its faculty have been critical in achieving successful collaboration to date.

Academic Medical Centers↗
PubMed2005

Discontinuation rates for selective serotonin reuptake inhibitors and other second-generation antidepressants in outpatients with major depressive disorder: a systematic review and meta-analysis.

The present study aimed to systematically compare overall loss to follow-up, discontinuation rates because of adverse events and discontinuation rates because of a lack of efficacy in published studies assessing the efficacy and tolerability of selective serotonin reuptake inhibitors (SSRIs) compared to other second-generation antidepressants in treating outpatients with major depressive disorder (MDD). We searched MEDLINE, Embase, The Cochrane Library, PsychLit and the International Pharmaceutical Abstracts from 1980 to 2004 (April). Twenty double-blinded, randomized controlled trials met our eligibility criteria and compared SSRIs to other second-generation antidepressants in adult outpatients with MDD. Pooled relative risks of discontinuation rates because of (i) any reason (overall loss to follow-up), (ii) adverse events and (iii) a lack of efficacy did not differ substantially between SSRIs as a class and other second-generation antidepressants. Taking the similar efficacy of second-generation antidepressant into account, our findings suggest that clinicians can focus on other practically or clinically relevant considerations such as costs, differences in side-effect profiles, onset of action or aspects of health-related quality of life to tailor a treatment to an individual patient's needs.

Antidepressive Agents, Second-Generation↗
PubMed2005

Veterans Affairs primary care organizational characteristics associated with better diabetes control.

OBJECTIVE: To examine organizational features of Veterans Affairs (VA) primary care programs hypothesized to be associated with better diabetes control, as indicated by hemoglobin A1C (HbA1C) levels. STUDY DESIGN: Cross-sectional cohort. METHODS: We established a cohort of 224 221 diabetic patients using the VA Diabetes Registry and Dataset and VA corporate databases. The 1999 VHA (Veterans Health Administration) Survey of Primary Care Practices results were combined with individual patient data. A 2-level hierarchical model was used to determine the relationship between organizational characteristics and HbA1C levels in 177 clinics with 82 428 cohort members. RESULTS: The following attributes were associated with lower (better) HbA1C and were statistically significant at P < .05: greater authority to establish or implement clinical policies (lower by 0.21%), greater staffing authority (0.28%), computerized diabetes reminders (0.17%), notifying all patients of their assigned provider (0.21%), hiring needed new staff during fiscal year 1999 (0.18%), having nurses that report only to the program (0.16%), and being a large academic practice (0.27%). Associated with higher (worse) HbA1C were programs reporting that patients almost always see their assigned provider (greater by 0.18%), having a quality improvement program involving all nurses without all physicians (0.38%), having general internal medicine physicians report only to the program (0.20%), and being located at an acute care hospital (0.20%). CONCLUSION: Programs that are associated with better diabetes control simultaneously have teams that actively involve physicians in quality improvement, use electronic health information systems, have authority to respond to staffing and programmatic issues, and engage patients in care.

Aged↗
PubMed2005

Development and testing of a self-report instrument to measure actions: outpatient physical therapy improvement in movement assessment log (OPTIMAL).

BACKGROUND AND PURPOSE: Physical therapy is faced with the challenge of producing evidence that physical therapy interventions are effective. The fundamental question confronting physical therapy is whether or not physical therapy interventions make a contribution to function, health, and well-being. The individual's ability to perform actions can serve as a theoretical construct related to movement and health around which physical therapy interventions can be assessed. To this end, the aims of this study were: (1) to develop a self-report instrument to assess ability to perform mobility actions in an adult outpatient population and (2) to assess the psychometric properties of such an instrument in the appropriate population. SUBJECTS AND METHODS: An instrument was developed to assess difficulty and confidence related to 24 actions. Descriptive statistics and measures of reliability, validity, and responsiveness were computed. A total of 391 patients participated in the study. RESULTS: The coefficient for reliability was in the required range, and measures of validity and responsiveness were established as well. Three factors were identified. DISCUSSION AND CONCLUSION: The instrument provides the beginning of documentation of outcomes in movement to identify the unique contributions of physical therapist practice.

Activities of Daily Living↗
PubMed2005

Management of back and neck pain: who seeks care from physical therapists?

BACKGROUND AND PURPOSE: Little information is available on factors associated with physical therapist use by people with back or neck pain. Identifying the characteristics of people who seek care from physical therapists is a useful first step in determining whether there is appropriate use of physical therapy services. The purpose of this study was to identify factors associated with physical therapist use by people with back or neck pain. SUBJECTS: The subjects were 29,049 people who had back pain or neck pain, or both, and who were seen for an initial evaluation at 1 of 21 US spine care centers. Each subject and evaluating physician completed a written survey at the time of the initial evaluation. METHODS: Multiple logistic regression analyses were conducted to identify factors associated with physical therapist use. RESULTS: Several measures of health and illness severity were associated with physical therapist use. Age and being male were negatively associated with physical therapist use. Education level, having workers' compensation coverage, and being in litigation were positively associated with physical therapist use. Physical therapist use also varied by previous physician use and census region. DISCUSSION AND CONCLUSION: The results suggest that variations in physical therapist use are associated with factors other than health and illness severity. The results also suggest that people who would benefit from physical therapy may not be receiving it or that people who would not benefit from physical therapy are receiving it, or both.

Adolescent↗
PubMed2004

The use of muscle relaxant medications in acute low back pain.

STUDY DESIGN: Prospective cohort study. OBJECTIVES: To determine the characteristics of patients who take muscle relaxants for back pain after seeking care and to determine the relationship of muscle relaxant use with recovery from the episode of low back pain. SUMMARY OF BACKGROUND DATA: Low back pain is a common condition with a generally favorable short-term prognosis. Physicians in the acute setting commonly prescribe muscle relaxants. The indications for use and outcomes are not clear. METHODS: We performed a secondary data analysis of a cohort of 1633 patients who sought care from a variety of practitioners (primary care, physician of chiropractic, orthopedic surgeon, Health Maintenance Organization) for low back pain. Patients were enrolled in the physician's office and interviewed at baseline, 2, 4, 8, 12, and 24 weeks. Pain, functional status, medication use, health care utilization, and satisfaction with care were assessed. RESULTS: Muscle relaxants were used by 49% of patients; among those who sought care from doctors, 64% used muscle relaxants. Muscle relaxant users were more impaired at baseline. Over time, among patients with greater functional status impairment (Roland disability score > 12) at baseline, muscle relaxant users had somewhat slower recovery from the episode of back pain. This finding persisted after controlling for baseline functional status, age, worker's compensation status, and use of nonsteroidal inflammatory agents. CONCLUSIONS: Use of muscle relaxants was very common among patients with acute low back pain. Muscle relaxant use was not associated with more rapid functional recovery.

Acute Disease↗
PubMed2004

Pharmacologic treatment of bronchiolitis in infants and children: a systematic review.

BACKGROUND: Bronchiolitis is the most common lower respiratory tract infection in infants. Up to 3% of all children in their first year of life are hospitalized with bronchiolitis. Bronchodilators and corticosteroids are commonly used treatments, but little consensus exists about optimal management strategies. OBJECTIVE: To conduct a systematic review of the effectiveness of commonly used treatments for bronchiolitis in infants and children. DATA SOURCES: We searched MEDLINE and the Cochrane Controlled Trials Register for references to randomized controlled trials of bronchiolitis treatment published since 1980. STUDY SELECTION: Randomized controlled trials of interventions for bronchiolitis in infants and children were included if they were published in English between 1980 and November 2002 and had a minimum sample size of 10. DATA EXTRACTION: We abstracted data on characteristics of the study population, interventions used, and results of studies meeting entry criteria into evidence tables and analyzed them by drug category. DATA SYNTHESIS: Interventions were grouped by drug category and qualitatively synthesized. RESULTS: Of 797 abstracts identified in the literature search, we included 54 randomized controlled trials. This review includes 44 studies of the most common interventions: epinephrine (n = 8), beta2-agonist bronchodilators (n = 13), corticosteroids (n = 13), and ribavirin (n = 10). Studies were, in general, underpowered to detect statistically significant outcome differences between study groups. Few studies collected data on outcomes that are of great importance to parents and clinicians, such as the need for and duration of hospitalization. CONCLUSIONS: Overall, little evidence supports a routine role for any of these drugs in treating patients with bronchiolitis. A sufficiently large, well-designed pragmatic trial of the commonly used interventions for bronchiolitis is needed to determine the most effective treatment strategies for managing this condition.

Adrenal Cortex Hormones↗
PubMed2004

Interprofessional collaboration and job satisfaction of chiropractic physicians.

BACKGROUND: Despite the fact that chiropractic physicians (DCs) are growing in number and legitimacy in the community of health care professionals, little recent research describes how their relationships with medical doctors (MDs) affect their job and career perceptions. OBJECTIVE: This study explores interprofessional relations by identifying factors associated with variations in how DCs evaluate their interaction with MDs. It also adapts a previously validated multifaceted measure of MD job satisfaction for use with DCs. DESIGN: Cross-sectional survey of 311 DC physicians in North Carolina. RESULTS: The hypothesized multifaceted nature of DC job satisfaction was confirmed. Four distinct job facets and global career satisfaction were measured effectively in DCs. DCs' career satisfaction is related to satisfaction with compensation, intrinsic motivation of relating to patients, and having positive relationships with DC colleagues. DCs report referring patients to MDs more often than they report MDs referring patients to them. Satisfaction with relationships between DCs and MDs is relatively low and is strongly linked to the quantity of referrals from MDs and the perception that MDs practice collaboratively with DCs. However, DCs' global career satisfaction is unrelated to their relationships with MDs. CONCLUSION: Global career satisfaction of DCs is relatively high and unaffected by the low level of satisfaction DCs report having with their relationships with MDs. These findings suggest that despite increasing interaction and interdependence, DCs' relationship with MDs is of minor importance in their professional self-image.

Attitude of Health Personnel↗
PubMed2004

Increase in tracheostomy for prolonged mechanical ventilation in North Carolina, 1993-2002.

OBJECTIVE: Patients who require tracheostomy for prolonged mechanical ventilation have poor outcomes and high costs of care. However, recent longitudinal trends relevant to these patients and their care have not been described. We aimed to describe trends in the annual incidence and timing of tracheostomy for prolonged mechanical ventilation, as well as prolonged mechanical ventilation patient resource utilization and overall in-hospital mortality. DESIGN AND SETTING: Retrospective review of the North Carolina Hospital Discharge Database, a comprehensive record of all state nonfederal, nonpsychiatric hospital discharges between 1993 and 2002. PATIENTS: Patients were 9,794 medical and surgical patients >/=18 yrs of age with International Classification of Diseases, Ninth Revision, Clinical Modification code 96.72 (mechanical ventilation for >96 hrs) and Diagnosis Related Group code 483 (tracheostomy except for face, neck, and mouth diagnoses). INTERVENTIONS: None. MEASUREMENTS: Incidence rates adjusted for annual population growth, mechanical ventilation days until tracheostomy placement, length of stay, and hospital charges and payments adjusted by the medical component of the Consumer Price Index. MAIN RESULTS: Between 1993 and 2002, the incidence of tracheostomy for prolonged mechanical ventilation increased across all age groups from 8.3 of 100,000 to 24.2 of 100,000 (p < .001), although most significantly among patients <55 yrs of age. During this period, a decrease was seen in mortality (from 39% to 25%), median mechanical ventilation days to tracheostomy placement (from 12 to 10 days), and median length of stay (from 47 to 33 days). By 2002, patients were almost three times less likely to be discharged to home independently although twice as likely to be sent to a skilled nursing facility. Although prolonged mechanical ventilation patients with tracheostomies represented only 7% of all who required mechanical ventilation, their total charges during the study period were 1.74 billion dollars-22% of all mechanical ventilation patient charges. CONCLUSION: The incidence of tracheostomy for prolonged mechanical ventilation increased by nearly 200% during the past decade in North Carolina, exceeding changes in the overall incidence of respiratory failure three-fold. Although in-hospital mortality, length of stay, and charges per patient fell over time, the overall resource utilization of prolonged mechanical ventilation patients increased dramatically.

Adult↗