Letters Section Editor: Robert M. Golub,
MD, Senior Editor.
To the Editor: In the study by Dr Wang and
colleagues,1 the Figure lists the underlying
data for the Kaplan-Meier survival curves for the study. Presumably the total
number of persons at risk in year zero should equal the total number of persons
who survived to year 16 plus those who developed AF and those died in the
follow-up period. This calculation works for the men. However, for the women,
2898 started the study while 2899 finished, died without developing AF, or
developed AF (2093 + 572 + 234). Although this is not
likely to affect the overall results, I am curious about this apparent discrepancy.
Parish D. Obesity and the Risk of New-Onset Atrial Fibrillation. JAMA. 2005;293(16):1974-1975. doi:10.1001/jama.293.16.1974-b