Follow-up Time

Among 250 total subjects, 100 died during follow-up. Of the 150 not known to have died, 10 were lost to follow-up after a median of 2.5 years (range 0.4 to 5.1), and the remaining 140 were censored at the end of our follow-up period at 12/31/2007 with a median follow-up time of 3.7 years (range 2.0 to 6.9).

See Censoring, Time-to-event analysis