Biomedical subjects

Katja Ocepek-Welikson

Publications and source records attributed to Katja Ocepek-Welikson.

5 recordsLinked to original sources

PubMed2006

A program to reduce the disparity in the rate of biennial lipid profiles between African-American and white Medicare beneficiaries with diabetes mellitus in New York City.

The burden of diabetes is more severe for minority populations than for the white population in the United States. Analysis of Medicare fee-for-service claims data revealed a significant disparity regarding screening for lipids between white and African-American Medicare beneficiaries with diabetes as measured by the biennial lipid profile indicator in New York State and the disparity was even greater in New York City. Thus IPRO, the Medicare New York State Quality Improvement Organization, launched a multifaceted quality improvement project to reduce the disparity, targeting African-American Medicare beneficiaries with diabetes in New York City and the providers who serve them. There was an absolute increase of 16.7% in the proportion of African-American beneficiaries with diabetes receiving a biennial lipid profile in the intervention areas and the disparity reduced by 9.8% between African-American and all eligible white beneficiaries in the intervention areas. Although it was not feasible to determine the direct impact of selected interventions on reducing the disparity, the interventions collectively appeared to be effective.

Black or African American↗

PubMed2006

Effect of inpatient quality of care on functional outcomes in patients with hip fracture.

OBJECTIVES: We sought to examine the relationship between functional outcome and process of care for patients with hip fracture. RESEARCH DESIGN AND PARTICIPANTS: We undertook a prospective cohort study in 4 hospitals of 554 patients treated with surgery for hip fracture. MEASUREMENTS: Information on patient characteristics and processes of hospital care collected from the medical record, interviews, and bedside observations. Follow-up information obtained at 6 months on function (using the Functional Independence Measure [FIM]), survival, and readmission. RESULTS: Individual processes of care were generally not associated with adjusted outcomes. A scale of 9 processes related to mobilization was associated with improved adjusted locomotion (P = 0.006), self care (P = 0.022), and transferring (P = 0.007) at 2 months, but the benefits were smaller and not significant by 6 months. These processes were not associated with mortality. The predicted value for the FIM locomotion measure (range, 2-14) at 2 months was 5.9 (95% confidence interval 5.4-6.4) for patients at the 10th percentile of performance on these processes compared with 7.1 (95% confidence interval 6.6, 7.6) at the 90th percentile. Patients who experienced no hospital complications and no readmissions retained the benefits in locomotion at 6 months. Anticoagulation processes were associated with improved transferring at 2 months (P = 0.046) but anticoagulation and other processes of care were not otherwise associated with improved function. DISCUSSION: Our findings indicate the need to attend to all steps in the care of patients with hip fracture. Additionally, functional outcomes were more sensitive markers of improved process of care, compared with 6-month mortality, in the case of hip fracture.

Aged, 80 and over↗

PubMed2006

Identification of differential item functioning using item response theory and the likelihood-based model comparison approach. Application to the Mini-Mental State Examination.

BACKGROUND: An important part of examining the adequacy of measures for use in ethnically diverse populations is the evaluation of differential item functioning (DIF) among subpopulations such as those administered the measure in different languages. A number of methods exist for this purpose. OBJECTIVE: The objective of this study was to introduce and demonstrate the identification of DIF using item response theory (IRT) and the likelihood-based model comparison approach. METHODS: Data come from a sample of community-residing elderly who were part of a dementia case registry. A total of 1578 participants were administered either an English (n = 913) or Spanish (n = 665) version of the 21-item Mini-Mental State Examination. IRT was used to identify language DIF in these items with the likelihood-based model comparison approach. RESULTS: : Fourteen of the 21 items exhibited significant DIF according to language of administration. However, because the direction of the identified DIF was not consistent for one language version over the other, the impact at the scale level was negligible. CONCLUSIONS: IRT and the likelihood-based model comparison approach comprise a powerful tool for DIF detection that can aid in the development, refinement, and evaluation of measures for use in ethnically diverse populations.

Aged↗

PubMed2005

The development and psychometric analyses of ADEPT: an instrument for assessing the interactions between doctors and their elderly patients.

BACKGROUND: The lack of instruments and methodologies designed specifically for assessing doctor-elderly patient interactions has constricted research on effective communication in the medical care of older adults. PURPOSE: This article reports on the development, qualitative analyses, and psychometric testing of the Assessment of Doctor-Elderly Patient Transactions (ADEPT), an instrument for assessing interactions between doctors and their elderly patients. METHODS: The ADEPT was based on the recommendations of an expert panel and designed around the three-function model of the medical interview. The ADEPT is meant to operationalize the research findings of interactional analysis studies of doctor-patient interaction. Following preliminary testing with standardized patients, the ADEPT was applied to videotaped visits of 433 patients 65 years of age and older to the doctor (n = 40) identified as their primary source of care. RESULTS: Four final scales derived from exploratory and confirmatory factor analyses were scored: Supporting, comprised of the 12 items from the first factor; Eliciting Needs, containing the 5 items from the second factor; and Informing, based on the final 6-item factor. Individual Cronbach's alphas across raters for this sample ranged from .71 to .79 for the first scale, from .83 to .88 for the second scale, and from .64 to .81 for the third scale. The reliability estimates for the total scale (23 items) ranged from .80 to .86 across raters. A fifth summed index composed of 46 binary checklist items also was computed. CONCLUSIONS: The findings indicate that credible scales can be developed for assessing communication behaviors.

Adult↗

PubMed2004

The relationship between organizational systems and clinical quality in diabetes care.

OBJECTIVE: To assess the clinical quality of diabetes care and the systems of care in place in Medicare managed care organizations (MCOs) to determine which systems are associated with the quality of care. STUDY DESIGN: Cross-sectional, observational study that included a retrospective review of 2001 diabetes Health Plan Employer and Data Information Set (HEDIS) measures and a mailed survey to MCOs. METHODS: One hundred and thirty-four plans received systems surveys. Data on clinical quality were obtained from HEDIS reports of diabetes measures. RESULTS: Ninety plans returned the survey. Composite diabetes quality scores (CDSs) were based on averaging scores for the 6 HEDIS diabetes measures. For the upper quartile of responding plans, the average score was 77.6. The average score for the bottom quartile was 53.9 (P < .001). The mean number of systems or interventions for the upper-quartile group and the bottom-quartile group was 17.5 and 12.5 (P < .01), respectively. There were significant differences in the 2 groups in the following areas: computer-generated reminders, physician champions, practitioner quality-improvement work groups, clinical guidelines, academic detailing, self-management education, availability of laboratory results, and registry use. After adjusting for structural and geographic variables, practitioner input and use of clinical-guidelines software remained as independent predictors of CDS. Structural variables that were independent predictors were nonprofit status and increasing number of Medicare beneficiaries in the MCO. CONCLUSIONS: MCO structure and greater use of systems/interventions are associated with higher-quality diabetes care. These relationships require further exploration.

Aged↗