RT Journal
A1 Miller LE, Stewart ME
T1 SOy isoflavone supplementation in menopausal women
JF Archives of Internal Medicine
JO Archives of Internal Medicine
YR 2011
FD December 12
VO 171
IS 22
SP 2067
OP 2068
DO 10.1001/archinternmed.2011.582
UL http://dx.doi.org/10.1001/archinternmed.2011.582
AB 
Through 2 years, subject attrition rates were 18.8% with soy isoflavone and 34.1% for placebo (P = .008). While the authors state that the baseline characteristics of the subjects who completed the trial were similar to those who withdrew, this explanation is inadequate. Were the reasons for study discontinuation available for comparison? It is unlikely that a discrepancy of this magnitude would occur by chance alone.