The table below presents hypothetical data collected from participants in the treatment arm of a randomized trial. A total of 50 participants were randomized to the treatment arm (note: 50 participants were also randomized to the control arm, but they are not included in the table below). Participants were followed prospectively for 30 days for the outcome of interest - death (column B). Column A denotes the number of days between randomization (i.e., start of follow-up) and either a death or a censoring event (column C). The values in columns B and C represent the number of study participants who either died or where censored on the day shown in column A, respectively.

Fill in the blanks with the measure asked for. Express your answers as fractions for Columns E and F, and as decimals (i.e. up to two decimal places) for Column G (e.g. 0.5 or 0.50). Some cells have been filled out to guide you. What is the cumulative probability of surviving past the 30-day study period?

Days from randomization (A)	No. of deaths (B)	No. censored (C)	No. at risk (D)	Conditional probability of death (E)	Conditional probability of survival (F)	Cumulative conditional probability of survival (G)
3	1	0	50	(1/50)	(49/50)	0.98
4	1	1
8	0	1
11	3	1
15	1	2	40
19	4	1
21	2	3
30	4	5