PMID- 19301556
OWN - NLM
STAT- MEDLINE
DCOM- 20090430
LR  - 20090323
IS  - 0966-8519 (Print)
IS  - 0966-8519 (Linking)
VI  - 18
IP  - 1
DP  - 2009 Jan
TI  - Taking patient mortalities into account when assessing change in NYHA 
      classification from baseline.
PG  - 73-5
AB  - Patient response to treatment is often monitored by comparing metrics of 
      performance immediately before treatment and at follow up. One such metric in 
      patients with heart disease is the New York Heart Association (NYHA) 
      classification, which is graded on a I to IV scale. In order for such an analysis 
      to be unbiased, any missing NYHA classifications at follow up must be 'missing 
      completely at random'. The study aim was to determine how the exclusion of 
      expired patient data may bias the analysis of changes in NYHA class, with 
      attention focused on the effects of ignoring patient mortalities, not only for 
      the sake of simplicity but also that this might inflict the largest degree of 
      bias in favor of the treatment.
FAU - Hamilton, Cody
AU  - Hamilton C
AD  - Edwards Lifesciences, One Edwards Way, Irvine, CA 92614, USA. 
      Cody_Hamilton@Edwards.com
LA  - eng
PT  - Journal Article
PL  - England
TA  - J Heart Valve Dis
JT  - The Journal of heart valve disease
JID - 9312096
SB  - IM
MH  - Data Collection
MH  - Epidemiologic Methods
MH  - Heart Diseases/*classification/mortality/physiopathology
MH  - Humans
EDAT- 2009/03/24 09:00
MHDA- 2009/05/01 09:00
CRDT- 2009/03/24 09:00
PHST- 2009/03/24 09:00 [entrez]
PHST- 2009/03/24 09:00 [pubmed]
PHST- 2009/05/01 09:00 [medline]
PST - ppublish
SO  - J Heart Valve Dis. 2009 Jan;18(1):73-5.