Table 3.

Life-table survival analysis showing the cumulative survival rate of long span FDPs when it comes to occurrence of technical complications

Interval Start Time (Years)	Number Entering Interval	Number Withdrawing during Interval	Number Exposed to Risk	FDPs Failure	Survival Rate within each Intrerval – ISR (%)	Cumulative Proportion Surviving at End of Interval	Std. Error (%)
1	61	2	60.000	1	0.98	0.98	0.02
2	58	1	57.500	4	0.93	0.91	0.04
3	53	5	50.500	0	1.00	0.91	0.04
4	48	6	45.000	0	1.00	0.91	0.04
5	42	4	40.000	3	0.93	0.85	0.05
6	35	1	34.500	0	1.00	0.85	0.05
7	34	1	33.500	4	0.88	0.75	0.07
8	29	0	29.000	3	0.90	0.67	0.07
9	26	1	25.500	1	0.96	0.64	0.07
10	24	3	22.500	5	0.78	0.50	0.08
11	16	2	15.000	0	1.00	0.50	0.08
12	14	1	13.500	0	1.00	0.50	0.08
13	13	1	12.500	2	0.84	0.42	0.09
14	10	0	10.000	0	1.00	0.42	0.09
15	10	6	7.000	4	0.43	0.18	0.09