RT Journal
A1 Laut KG, Kristensen SD, Terkelsen CJ
T1 INternational variation in readmission after myocardial infarction
JF JAMA
JO JAMA
YR 2012
FD April 25
VO 307
IS 16
SP 1690
OP 1691
DO 10.1001/jama.2012.530
UL http://dx.doi.org/10.1001/jama.2012.530
AB 
In our opinion, the use of data from an RCT to compare readmission rates between nations is problematic. First, RCTs tend to include highly selected patients and those with a favorable prognosis. The data presented by Kociol et al1 could therefore be an underestimation.