Table 1.

Demonstration of continuous and discrete time-to-event survival formats

Part I: Continuous time-to-event format
Person (i)	Date of birth	Date of interview (t0i)	Data of death or censored (t1i)	Discretized time period	Follow-up (years) (Ti)	Age at interview (years) (age at t0i)	Calendar year at interview (year at t0i)	Event status (1 = died) (0 = lived) (Di)	Sex (1 = Male) (0 = Female)
A	10/01/1929	02/06/2000	08/08/2003	---	3.5	70.3	2000	1	1
B	11/07/1932	07/02/2003	12/31/2006	---	3.5	70.7	2003	0	0
Part II: Discrete time-to-event format
Person (i) & time period (j)	Date of birth	Date of interview (t0ij)	Data of death or censored (t1ij)	Discretized time period (ij)	Year of follow-up (Tij)	Age at the beginning of year of follow-up	Calendar year during follow-up (year at ij)	Event status (1 = died) (Dij)	Sex (1 = Male) (0 = Female)
A1	10/01/1929	02/06/2000	12/31/2000	1	0.9	70.2	2000	0	1
A2		01/01/2001	12/31/2001	2	1.0	71.2	2001	0	1
A3		01/01/2002	12/31/2002	3	1.0	72.2	2002	0	1
A4		01/02/2003	08/08/2003	4	0.6	73.2	2003	1	1
B1	11/07/1932	07/02/2003	12/31/2003	1	0.5	70.1	2003	0	0
B2		01/01/2004	12/31/2004	2	1.0	71.1	2004	0	0
B3		01/01/2005	12/31/2005	3	1.0	72.1	2005	0	0
B4		01/01/2006	12/31/2006	4	1.0	73.1	2006	0	0