KARON FRANCES COOK
Affiliation: University of Washington
- Postscript: emergence of efficiency in health outcomes measurementKaron F Cook
J Appl Meas 11:331-6. 2010..Finally, I argue that psychometrics should play "second fiddle" to larger scientific questions...
- IRT health outcomes data analysis project: an overview and summaryKaron F Cook
Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, Washington, USA
Qual Life Res 16:121-32. 2007..A component of the conference was presentation of a psychometric and content analysis of a secondary dataset...
- Letting the CAT out of the bag: comparing computer adaptive tests and an 11-item short form of the Roland-Morris Disability QuestionnaireKaron F Cook
Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA
Spine (Phila Pa 1976) 33:1378-83. 2008..A post hoc simulation of a computer adaptive administration of the items of a modified version of the Roland-Morris Disability Questionnaire...
- Having a fit: impact of number of items and distribution of data on traditional criteria for assessing IRT's unidimensionality assumptionKaron F Cook
Department of Rehabilitation Medicine, University of Washington, Box 357920, Seattle, WA, 98195 7920, USA
Qual Life Res 18:447-60. 2009..This study explored the degree to which the values of these statistics are affected by two characteristics of item banks developed to measure health outcomes: large numbers of items and nonnormal data...
- Development and validation of Patient Reported Impact of Spasticity Measure (PRISM)Karon F Cook
Department of Veterans Affairs Measurement Excellence and Training Resource Information Center, Houston, TX, USA
J Rehabil Res Dev 44:363-71. 2007..Results of reliability and validity assessments indicate that the PRISM subscale scores effectively measure the impact of spasticity in the population of veterans with SCI...
- Do somatic and cognitive symptoms of traumatic brain injury confound depression screening?Karon F Cook
Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA 98105, USA
Arch Phys Med Rehabil 92:818-23. 2011..To evaluate whether items of the Patient Health Questionnaire 9 (PHQ-9) function differently in persons with traumatic brain injury (TBI) than in persons from a primary care sample...
- Fatigue and aging with a disabilityKaron F Cook
Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA, USA
Arch Phys Med Rehabil 92:1126-33. 2011..S. population norms. We assessed fatigue and age in a sample of individuals with spinal cord injury (SCI), postpolio syndrome (PPS), multiple sclerosis (MS), and muscular dystrophy (MD)...
- Measuring pain in the context of homelessnessRebecca Matter
Center for Technology and Disability Studies, University of Washington, Seattle, WA 98195 7920, USA
Qual Life Res 18:863-72. 2009..The secondary objective was to increase understanding about the unique experience of homeless people with pain...
- Development of a PROMIS item bank to measure pain interferenceDagmar Amtmann
Department of Rehabilitation Medicine, University of Washington, Box 357920, Seattle, WA 98195 7920, USA
Pain 150:173-82. 2010..0001). The results indicated that the PROMIS-PI items constitute a psychometrically sound bank. Computerized adaptive testing and short forms are available...
- Differential item functioning impact in a modified version of the Roland-Morris Disability QuestionnairePaul K Crane
Department of Medicine, University of Washington, Harborview Medical Center, 325 Ninth Avenue, Box 359780, Seattle, WA 98104, USA
Qual Life Res 16:981-90. 2007..To evaluate a modified version of the Roland-Morris Disability Questionnaire for differential item functioning (DIF) related to several covariates...
- A 37-item shoulder functional status item pool had negligible differential item functioningPaul K Crane
Division of General Internal Medicine, University of Washington School of Medicine, Seattle, WA, USA
J Clin Epidemiol 59:478-84. 2006..We present a technique for determining whether observed differences in function between groups are due to biased test items or real differences in function...
- Development of a Flexilevel Scale for use with computer-adaptive testing for assessing shoulder functionKaron F Cook
Houston Veterans Affairs Parkinson s Research and Educational Center, Houston VAMC, 2002 Holcombe Boulevard, Houston, TX 77030, USA
J Shoulder Elbow Surg 14:90S-94S. 2005..This simulation is based on the developmental items we tested for use in the FLEX-SF. The results indicate that greater measurement efficiency can be achieved with a computer-adaptive test format...
- Reliability by surgical status of self-reported outcomes in patients who have shoulder pathologiesKaron F Cook
Houston VA Parkinson s Disease Research, Education, and Clinical Center, TX, USA
J Orthop Sports Phys Ther 32:336-46. 2002..A test-retest design was used to evaluate the reliability of the self-report sections of 4 shoulder pain and disability scales...
- Dynamic assessment of health outcomes: time to let the CAT out of the bag?Karon F Cook
Veterans Affairs Measurement of Excellence Training Resource Information Center, Houston Center of Quality Care and Utilization Studies, Houston, TX 77007, USA
Health Serv Res 40:1694-711. 2005..Perhaps the most important application of IRT is computer-adaptive testing (CAT), a measurement approach in which the selection of items is tailored for each respondent...
- Mode effects in the center for epidemiologic studies depression (CES-D) scale: personal digital assistant vs. paper and pencil administrationRichard J Swartz
Department of Biostatistics, The University of Texas M D Anderson Cancer Center, Houston, 77030, TX, USA
Qual Life Res 16:803-13. 2007..These results underscore the importance of evaluating the cross-mode equivalence of psychosocial instruments before administering them in non-established modes...
- Spasticity experience domains in persons with spinal cord injuryJane S Mahoney
School of Nursing, University of Texas Health Science Center, and Menninger Clinic, Houston, TX 77080, USA
Arch Phys Med Rehabil 88:287-94. 2007..To understand the everyday life experiences of persons who have spasticity associated with spinal cord injury (SCI)...
- Proxy reports in Parkinson's disease: caregiver and patient self-reports of quality of life and physical activityAllison Fleming
Michael E DeBakey Veterans Affairs Medical Center, Parkinson s Disease Research, Education Clinical Center, Houston, Texas, USA
Mov Disord 20:1462-8. 2005..These differences should be considered in research design and clinical decision making. Alternative approaches to the measurement of patient relevant outcomes could supplement traditional, retrospective self-reports...
- Proxies and other external raters: methodological considerationsA Lynn Snow
Houston Center for Quality Care and Utilization Studies, Michael E DeBakey Veterans Affairs Medical Center, Houston, TX 77030, USA
Health Serv Res 40:1676-93. 2005..We conclude with a discussion of needs for future research...
- Development and psychometric evaluation of the Flexilevel Scale of Shoulder FunctionKaron F Cook
Veterans Administration Parkinson s Disease Research, Education and Clinical Center, Houston, Texas 77030, USA
Med Care 41:823-35. 2003..A more efficient approach is to use modern psychometric methods to construct an adaptive scale in which patients respond only to items that are targeted at their level of shoulder function...
- Development and Validation of Measures of Pain Behaviors in Chronic PainKARON FRANCES COOK; Fiscal Year: 2010....