A prospectus study with a 2-year (24 month) follow up was conducted. Results are shown in the table for individuals who either died or were censored before the end of the follow-up period.

A prospectus study with a 2-year (24 month ) follow up was conducted. Results are shown In the table for individuals who either died or were censored before the end of the follow-up period. Survival data for 24 participants of a hypothetical prospective study. Follow- up time (months) Event 2 Death 4 Censored 7 Censored 8 Death 12 Censored 15 Death 17 Death 19 Death 20 Censored 23 Death