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2014 ; 9
(ä): 551-61
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gab.com Text
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English Wikipedia
Real-world characterization and differentiation of the Global Initiative for
Chronic Obstructive Lung Disease strategy classification
#MMPMID24920893
Price DB
; Baker CL
; Zou KH
; Higgins VS
; Bailey JT
; Pike JS
Int J Chron Obstruct Pulmon Dis
2014[]; 9
(ä): 551-61
PMID24920893
show ga
BACKGROUND: This study aimed to characterize and differentiate the Global
Initiative for Chronic Obstructive Lung Disease (GOLD) strategy 2011 cut points
through the modified Medical Research Council dyspnea scale (mMRC) and chronic
obstructive pulmonary disease (COPD) assessment test (CAT). METHODS: Analysis of
COPD patient data from the 2012 Adelphi Respiratory Disease Specific Program was
conducted in Europe and US. Matched data from physicians and patients included
CAT and mMRC scores. Receiver operating characteristic curves and kappa analysis
determined a cut point for CAT and mMRC alignment and thus defined patient
movement ("movers") within GOLD groups A-D, depending on the tool used. Logistic
regression analysis, with a number of physician- and patient-reported covariates,
characterized those movers. RESULTS: Comparing GOLD-defined high-symptom patients
using mMRC and CAT cut points (?2 and ?10, respectively), there were 890 (53.65%)
movers; 887 of them (99.66%) moved from less symptomatic GOLD groups A and C
(using mMRC) to more symptomatic groups B and D (using CAT). For receiver
operating characteristic (area under the curve: 0.82, P<0.001) and kappa
(maximized: 0.45) recommended CAT cut points of ?24 and ?26, movers reduced to
429 and 403 patients, respectively. Logistic regression analysis showed variables
significantly associated with movers were related to impact on normal life, age,
cough, and sleep (all P<0.05). Within movers, direction of movement was
significantly associated with the same variables (all P<0.05). CONCLUSION: Use of
current mMRC or CAT cut points leads to inconsistencies for COPD assessment
classification. It is recommended that cut points are aligned and both tools
administered simultaneously for optimal patient care and to allow for closer
management of movers. Our research may suggest an opportunity to investigate a
combined score approach to patient management based on the worst result of mMRC
and CAT. The reduced number of remaining movers may then identify patients who
have greater impact of disease and may require a more personalized treatment
plan.