PMID- 17136969
OWN - NLM
STAT- MEDLINE
DCOM- 20070222
LR  - 20220409
IS  - 1541-2555 (Print)
IS  - 1541-2563 (Linking)
VI  - 2
IP  - 1
DP  - 2005 Mar
TI  - The MCID of the transition dyspnea index is a total score of one unit.
PG  - 99-103
AB  - The Baseline (BDI) and Transition (TDI) Dyspnea Indexes provide interview-based 
      measurements of breathlessness related to activities of daily living. The BDI is 
      a discriminative instrument that includes specific criteria for each of three 
      components at a single point in time. The TDI is an evaluative instrument that 
      includes specific criteria for each of three components to measure changes from a 
      baseline state. Observational studies have shown that patients with COPD 
      generally experience a gradual progression of breathing difficulty as measured by 
      the TDI over time. Randomized controlled trials have demonstrated excellent 
      measurement characteristics of the TDI; these include responsiveness (ability to 
      detect change) and construct validity (a change in the TDI correlates with 
      changes in other variables). Supporting evidence for one unit as the minimal 
      clinically important difference (MCID) of the TDI is based on: expert preference; 
      use of the physician's global evaluation score as an anchor; and distribution 
      estimates (standard error of measurement and 0.5 of the standard deviation). As 
      an alternative to the interview process, self-administered computerized (SAC) 
      versions of the BDI/TDI have been developed to provide direct patient-reported 
      ratings of dyspnea. To further establish the MCID of the interview-administered 
      and/or the SAC TDI, we recommend that a patient's report of global ratings of 
      change by used as an independent standard or anchor.
FAU - Mahler, Donald A
AU  - Mahler DA
AD  - Dartmouth Medical School, Lebanon, New Hampshire 03656-0001, USA. 
      Donald.a.mahler@hitchcock.org
FAU - Witek, Theodore J Jr
AU  - Witek TJ Jr
LA  - eng
PT  - Journal Article
PT  - Review
PL  - England
TA  - COPD
JT  - COPD
JID - 101211769
SB  - IM
MH  - *Activities of Daily Living
MH  - Data Interpretation, Statistical
MH  - Dyspnea/*diagnosis/*therapy
MH  - Humans
MH  - Pulmonary Disease, Chronic Obstructive/*diagnosis/*therapy
MH  - Treatment Outcome
RF  - 39
EDAT- 2006/12/02 09:00
MHDA- 2007/02/23 09:00
CRDT- 2006/12/02 09:00
PHST- 2006/12/02 09:00 [pubmed]
PHST- 2007/02/23 09:00 [medline]
PHST- 2006/12/02 09:00 [entrez]
AID - 10.1081/copd-200050666 [doi]
PST - ppublish
SO  - COPD. 2005 Mar;2(1):99-103. doi: 10.1081/copd-200050666.