Table 3.

Total number of deaths and the estimation of survived patients by year

Year	No. of patient followed	No. of deaths identified	No. of patient censored per year1	Mortality rate per year2	No. of death among censored patients3	No. of survived patient estimated by KMSA4	Cumulative survival, all-causes (%)
1 year	11,403	1,706	0	15.0%	0	11,403	-
2 year	9,697	1,044	2,046	10.8%	220	9,697	85.0%
3 year	6,607	520	1,767	7.9%	139	8,433	74.0%
4 year	4,320	274	1,592	6.3%	101	7,774	68.2%
5 year	2,454	-	-	-	-	7,399	64.9%

¹= No. of followed patient - No. of followed patient at next year - No. of death

² = No. of death/No. of followed patient

³ = No. of censored patient * mortality rate per year

⁴ = No. of patient at previous year - No. of death at previous year - No. of death among censored patient at previous year