Table 1.

Life table of the survival for 13,935 elderly

		Number		Proportion of
Period	Time Interval	Alive at the beginning of the 6 month	Dead during the 6 month	Dead during the 6 month period	All the elderly still surviving at the end of 6 month period
1	–	13935	–	–	1
2	[0,0.5)	13935	613	0.044	0.956
3	[0.5,1)	13322	972	0.073	0.886
4	[1,1.5)	12350	1129	0.091	0.805
5	[1.5,2)	11221	1225	0.109	0.717
6	[2,2.5)	9996	923	0.092	0.651
7	[2.5,3)	9073	891	0.098	0.587
8	[3,3.5)	8182	294	0.036	0.566
9	[3.5,4)	7888*	420	0.053	0.536
10	[4,4.5)	7468*	458	0.061	0.503
11	[4.5,5)	7010	452	0.064	0.471
12	[5,5.5)	6558	431	0.066	0.440
13	[5.5,6)	6127	387	0.063	0.412

^*875 respondents lost in a follow-up survey in period 9, and 597 respondents lost in a follow-up survey in period 10. These lost respondents do not contribute to the risk set.