Abstract:
BACKGROUND:In many research and clinical settings in which patient-reported outcome (PRO) measures are used, it is often desirable to link scores across disparate measures or to use scores from 1 measure to describe scores on a separate measure. However, PRO measures are scored by using a variety of metrics, making such comparisons difficult. OBJECTIVE:The objective of this article was to provide an example of how to transform scores across disparate measures (the Marks Asthma Quality of Life Questionnaire [AQLQ-Marks] and the newly developed RAND-Negative Impact of Asthma on Quality of Life item bank [RAND-IAQL-Bank]) by using an item response theory (IRT)-based linking method. METHODS:Our sample of adults with asthma (N = 2032) completed 2 measures of asthma-specific quality of life: the AQLQ-Marks and the RAND-IAQL-Bank. We use IRT-based co-calibration of the 2 measures to provide a linkage, or a common metric, between the 2 measures. Co-calibration refers to the process of using IRT to estimate item parameters that describe the responses to the scales' items according to a common metric; in this case, a normal distribution transformed to a T scale with a mean of 50 and an SD of 10. RESULTS:Respondents had an average age of 43 (15), were 60% female, and predominantly non-Hispanic White (56%), with 19% African American, 14% Hispanic, and 11% Asian. Most had at least some college education (83%), and 90% had experienced an asthma attack during the last 12 months. Our results indicate that the AQLQ-Marks and RAND-IAQL-Bank scales measured highly similar constructs and were sufficiently unidimensional for IRT co-calibration. Once linked, scores from the 2 measures were invariant across subgroups. A crosswalk is provided that allows researchers and clinicians using AQLQ-Marks to crosswalk to the RAND-IAQL toolkit. CONCLUSIONS:The ability to translate scores from the RAND-IAQL toolkit to other "legacy" (ie, commonly used) measures increases the value of the new toolkit, aids in interpretation, and will hopefully facilitate adoption by asthma researchers and clinicians. More generally, the techniques we illustrate can be applied to other newly developed or existing measures in the PRO research field to obtain crosswalks with widely used traditional legacy instruments.
journal_name
Clin Therjournal_title
Clinical therapeuticsauthors
Edelen MO,Stucky BD,Sherbourne C,Eberhart N,Lara Mdoi
10.1016/j.clinthera.2014.04.007subject
Has Abstractpub_date
2014-05-01 00:00:00pages
680-8issue
5eissn
0149-2918issn
1879-114Xpii
S0149-2918(14)00205-7journal_volume
36pub_type
杂志文章abstract::Encapsulation affects the virulence and survival of anaerobic bacteria and their protection from phagocytosis. More encapsulated Bacteroides strains and anaerobic and facultative gram-positive cocci are isolated from patients with clinical infections than from healthy people. The pathogenicity of Bacteroides, Fusobact...
journal_title:Clinical therapeutics
pub_type: 杂志文章,评审
doi:
更新日期:1987-01-01 00:00:00
abstract::This prospective, clinical economic study was done to determine the cost impact of oral compared with intravenous (i.v.) ganciclovir for the maintenance treatment of newly diagnosed cytomegalovirus (CMV) retinitis in patients with acquired immunodeficiency syndrome (AIDS). Efficacy and safety data were extracted from ...
journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:In 2002, fixed-dose combination therapy (FDCT) with rosiglitazone maleate plus metformin hydrochloride became available for the treatment of type 2 diabetes mellitus (DM-2) in subjects whose disease was uncontrolled on monotherapy with metformin or a thiazolidinedione. FDCT allows a reduced pill burden and a...
journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:10.1016/j.clinthera.2004.12.018
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abstract:BACKGROUND:The prevalence of asthma is increasing, and this chronic condition imposes a substantial economic burden worldwide. It is not known whether newer therapies, such as leukotriene receptor antagonists (LTRAs), can ease this burden. OBJECTIVE:This analysis examined the association between choice of first-line a...
journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:10.1016/s0149-2918(01)80130-2
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abstract:PURPOSE:We applied Multi-Criteria Decision Analysis (MCDA) methods in a structured benefit-risk assessment of cladribine and newer approved disease-modifying drugs (DMDs) for patients with relapsing-remitting multiple sclerosis (RRMS). METHODS:Decision conferencing with clinical neurologists as decision makers was use...
journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:10.1016/j.clinthera.2018.12.015
更新日期:2019-02-01 00:00:00
abstract::Absorption of the antiarrhythmic agent mexiletine from conventional capsules (200 mg) and two sustained-release formulations (360 and 432 mg) was studied in four healthy volunteer subjects, and use of the 360-mg preparation was studied in nine patients who had been using conventional capsules. In the four volunteers, ...
journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:
更新日期:1983-01-01 00:00:00
abstract:BACKGROUND:Mirodenafil is a phosphodiesterase type 5 (PDE-5) inhibitor developed for the treatment of erectile dysfunction. Mirodenafil has the possibility of being administered with alcohol. OBJECTIVE:This study assessed the hemodynamic effects and pharmacokinetic properties of mirodenafil administered with alcohol. ...
journal_title:Clinical therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.clinthera.2009.06.008
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journal_title:Clinical therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.clinthera.2014.09.022
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1982-01-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/j.clinthera.2005.07.010
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journal_title:Clinical therapeutics
pub_type: 杂志文章
doi:10.1016/j.clinthera.2011.08.002
更新日期:2011-09-01 00:00:00
abstract::A double-blind clinical trial was conducted to evaluate the efficacy and safety of flumazenil, a benzodiazepine antagonist, in 146 hospitalized patients, who had had general anesthesia induced by midazolam and a long-acting opioid. Ninety-eight patients received flumazenil and 48 received placebo. Administered postope...
journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:1992-11-01 00:00:00
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pub_type: 杂志文章,评审
doi:10.1016/j.clinthera.2006.09.006
更新日期:2006-09-01 00:00:00
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journal_title:Clinical therapeutics
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doi:10.1016/j.clinthera.2020.08.004
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章
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journal_title:Clinical therapeutics
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journal_title:Clinical therapeutics
pub_type: 杂志文章,评审
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journal_title:Clinical therapeutics
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更新日期:2017-09-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章,评审
doi:
更新日期:1993-01-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章,多中心研究
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更新日期:2019-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2017-12-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章
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更新日期:2015-09-01 00:00:00
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journal_title:Clinical therapeutics
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更新日期:1986-01-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.clinthera.2007.08.005
更新日期:2007-08-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1991-11-01 00:00:00
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章
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