Table 5.

Survival rate of children over study period

Study group	Time interval in months	Those at risk during interval Nt	Average Number at risk of IDA during interval, Nt*	Number Recovering from IDA during interval, Rt	Lost to Follow-up, Ct	Proportion Recovering from IDA during interval, qt	Among those at risk, proportion surviving during Interval, pt	Survival Probability St
SCSB	0	80	40
	1	73	73	7		5.39	4.39	4.39
	2	56	36	16	1	12.32	11.32	49.70
	3	32	15.5	23	1	17.71	16.71	81.51
	4	9	4	22	1	16.94	15.94	94.42
	5		4.5	9		6.93	5.93	100.00
	6					0.00	0.00	100.00
CSB	0	80	40
	1	79	39		1
	2	78	39	1		0.78	0.22	0.22
	3	77	38.5	1		0.77	0.23	2.05
	4	73	36	3	1	2.19	1.19	3.61
	5	69	34.5	5		3.45	2.45	4.76
	6	59	29.5	10		5.90	4.90	5.49
Placebo	0	80	40
	1	79	39		1	0.00	0.00	0.00
	2	78	38.5		1	0.00	0.00	0.00
	3	77	38		1	0.00	0.00	0.00
	4	75	37	1	1	0.75	0.75	0.75
	5	74	37		1	0.00	0.00	0.75
	6	72	36	1	1	0.72	0.72	0.54

Table uses the actuarial method to construct the follow-up life table where the time is divided into equal intervals