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This study estimated the validity and relative precision (RP) of four methods (MOS long- and short-form scales, global items, and COOP Poster Charts) in measuring six general health concepts. The authors also tested whether and how precisely each method discriminated relatively well adult patients (N = 638) from those with only severe chronic medical (N =(More)
BACKGROUND The communication of probabilistic outcomes is an essential aspect of shared medical decision making. METHODS The authors conducted a qualitative study using focus groups to evaluate the response of women to various formats used in the communication of breast cancer risk. FINDINGS Graphic discrete frequency formats using highlighted human(More)
Indexes developed to measure physical functioning as an essential component of general health status are often based on sets of hierarchically-structured items intended to represent a broad underlying concept. Rasch Item Response Theory (IRT) provides a methodology to examine the hierarchical structure, unidimensionality, and reproducibility of item(More)
This study examined the relative precision (RP) of two methods of scoring the 10-item Physical Functioning Scale (PF-10) from a large sample of patients (n = 3445) of the Medical Outcomes Study. Based on a Likert scaling model, the PF-10 summated scoring method was compared with a Rasch Item Response Theory (IRT) scaling model in which raw scores were(More)
The SWAL-QOL outcomes tool was constructed for use in clinical research for patients with oropharyngeal dysphagia. The SWAL-QOL was constructed a priori to enable preliminary psychometric analyses of items and scales before its final validation. This article describes data analysis from a pretest of the SWAL-QOL. We evaluated the different domains of the(More)
OBJECTIVE As a step toward developing a standardized measure of continuity of care for mental health services research, the study sought to identify the interpersonal processes of giving and receiving day-to-day services through which individual providers create experiences of continuity for consumers. METHODS Ethnographic methods of field observation and(More)
OBJECTIVE To prospectively compare inpatient and outpatient utilization rates between prepaid (PPD) and fee-for-service (FFS) insurance coverage for patients with chronic disease. DATA SOURCE/STUDY SETTING Data from the Medical Outcomes Study, a longitudinal observational study of chronic disease patients conducted in Boston, Chicago, and Los Angeles. (More)
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