@article {173,
	title = {Replenishing a computerized adaptive test of patient-reported daily activity functioning},
	journal = {Quality of Life Research},
	volume = {18},
	number = {4},
	year = {2009},
	note = {Haley, Stephen MNi, PengshengJette, Alan MTao, WeiMoed, RichardMeyers, DougLudlow, Larry HK02 HD45354-01/HD/NICHD NIH HHS/United StatesResearch Support, N.I.H., ExtramuralNetherlandsQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitationQual Life Res. 2009 May;18(4):461-71. Epub 2009 Mar 14.},
	month = {May},
	pages = {461-71},
	edition = {2009/03/17},
	abstract = {PURPOSE: Computerized adaptive testing (CAT) item banks may need to be updated, but before new items can be added, they must be linked to the previous CAT. The purpose of this study was to evaluate 41 pretest items prior to including them into an operational CAT. METHODS: We recruited 6,882 patients with spine, lower extremity, upper extremity, and nonorthopedic impairments who received outpatient rehabilitation in one of 147 clinics across 13 states of the USA. Forty-one new Daily Activity (DA) items were administered along with the Activity Measure for Post-Acute Care Daily Activity CAT (DA-CAT-1) in five separate waves. We compared the scoring consistency with the full item bank, test information function (TIF), person standard errors (SEs), and content range of the DA-CAT-1 to the new CAT (DA-CAT-2) with the pretest items by real data simulations. RESULTS: We retained 29 of the 41 pretest items. Scores from the DA-CAT-2 were more consistent (ICC = 0.90 versus 0.96) than DA-CAT-1 when compared with the full item bank. TIF and person SEs were improved for persons with higher levels of DA functioning, and ceiling effects were reduced from 16.1\% to 6.1\%. CONCLUSIONS: Item response theory and online calibration methods were valuable in improving the DA-CAT.},
	keywords = {*Activities of Daily Living, *Disability Evaluation, *Questionnaires, *User-Computer Interface, Adult, Aged, Cohort Studies, Computer-Assisted Instruction, Female, Humans, Male, Middle Aged, Outcome Assessment (Health Care)/*methods},
	isbn = {0962-9343 (Print)0962-9343 (Linking)},
	author = {Haley, S. M. and Ni, P. and Jette, A. M. and Tao, W. and Moed, R. and Meyers, D. and Ludlow, L. H.}
}
@article {169,
	title = {Computerized adaptive testing for follow-up after discharge from inpatient rehabilitation: II. Participation outcomes},
	journal = {Archives of Physical Medicine and Rehabilitation},
	volume = {89},
	number = {2},
	year = {2008},
	note = {Haley, Stephen MGandek, BarbaraSiebens, HilaryBlack-Schaffer, Randie MSinclair, Samuel JTao, WeiCoster, Wendy JNi, PengshengJette, Alan MK02 HD045354-01A1/HD/NICHD NIH HHS/United StatesK02 HD45354-01/HD/NICHD NIH HHS/United StatesR01 HD043568/HD/NICHD NIH HHS/United StatesR01 HD043568-01/HD/NICHD NIH HHS/United StatesResearch Support, N.I.H., ExtramuralUnited StatesArchives of physical medicine and rehabilitationArch Phys Med Rehabil. 2008 Feb;89(2):275-83.},
	month = {Feb},
	pages = {275-283},
	edition = {2008/01/30},
	abstract = {OBJECTIVES: To measure participation outcomes with a computerized adaptive test (CAT) and compare CAT and traditional fixed-length surveys in terms of score agreement, respondent burden, discriminant validity, and responsiveness. DESIGN: Longitudinal, prospective cohort study of patients interviewed approximately 2 weeks after discharge from inpatient rehabilitation and 3 months later. SETTING: Follow-up interviews conducted in patient{\textquoteright}s home setting. PARTICIPANTS: Adults (N=94) with diagnoses of neurologic, orthopedic, or medically complex conditions. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Participation domains of mobility, domestic life, and community, social, \& civic life, measured using a CAT version of the Participation Measure for Postacute Care (PM-PAC-CAT) and a 53-item fixed-length survey (PM-PAC-53). RESULTS: The PM-PAC-CAT showed substantial agreement with PM-PAC-53 scores (intraclass correlation coefficient, model 3,1, .71-.81). On average, the PM-PAC-CAT was completed in 42\% of the time and with only 48\% of the items as compared with the PM-PAC-53. Both formats discriminated across functional severity groups. The PM-PAC-CAT had modest reductions in sensitivity and responsiveness to patient-reported change over a 3-month interval as compared with the PM-PAC-53. CONCLUSIONS: Although continued evaluation is warranted, accurate estimates of participation status and responsiveness to change for group-level analyses can be obtained from CAT administrations, with a sizeable reduction in respondent burden.},
	keywords = {*Activities of Daily Living, *Adaptation, Physiological, *Computer Systems, *Questionnaires, Adult, Aged, Aged, 80 and over, Chi-Square Distribution, Factor Analysis, Statistical, Female, Humans, Longitudinal Studies, Male, Middle Aged, Outcome Assessment (Health Care)/*methods, Patient Discharge, Prospective Studies, Rehabilitation/*standards, Subacute Care/*standards},
	isbn = {1532-821X (Electronic)0003-9993 (Linking)},
	author = {Haley, S. M. and Gandek, B. and Siebens, H. and Black-Schaffer, R. M. and Sinclair, S. J. and Tao, W. and Coster, W. J. and Ni, P. and Jette, A. M.}
}
