Calculations for Binka et al 2002


1	Trial period (July 1993 - June 1995)
2
3	Approximate start date	7/1/1993
4	Approximate end date	6/1/1995
5
6		Treatment				Control
7	Age at baseline	Individuals at risk	Deaths	Deaths per 1000 person-years	Person-years	Individuals at risk	Deaths	Deaths per 1000 person-years	Person-years
8	< 6 months	1120	86	42.1	2042.755344	1195	111	52.3	2122.370937
9	6-11 months	1085	66	33.3	1981.981982	1074	89	46.5	1913.978495
10	1 year	1527	57	19.7	2893.401015	1530	69	23.8	2899.159664
11
12		Treatment	Control
13	Deaths in children less than 2 years old	209	269
14	Person-years for children less than 2 years old	6918	6936
15	Deaths per 1000 person-years	30.2	38.8
16	Difference in deaths per 1000 person-years	-8.6
17	Standard error for the difference in deaths per person-year	0.003
18	Lower bound of the 95% CI for the difference in deaths per person-year	-0.015
19	Upper bound of the 95% CI for the difference in deaths per person-year	-0.002
20	Years in trial period	1.9
21	Difference in deaths per 1000 person over the trial period	-16.4
22	Lower bound of the 95% CI	-28.3
23	Upper bound of the 95% CI	-4.6
24
25	Follow-up period (July 1995 - December 2000)
26
27	Approximate start date	7/1/1995
28	Approximate end date	12/1/2000
29
30		Treatment				Control
31	Age at baseline	Individuals at risk	Deaths	Deaths per 1000 person-years	Person-years	Individuals at risk	Deaths	Deaths per 1000 person-years	Person-years
32	< 6 months	924	49	11.2	4375	941	40	9.1	4395.604396
33	6-11 months	930	34	7.5	4533.333333	869	30	7	4285.714286
34	1 year	1383	40	5.5	7272.727273	1386	36	4.9	7346.938776
35
36		Treatment	Control
37	Deaths in children less than 2 years old	123	106
38	Person-years for children less than 2 years old	16181	16028
39	Deaths per 1000 person-years	7.6	6.6
40	Difference in deaths per 1000 person-years	1.0
41	Standard error for the difference in deaths per person-year	0.001
42	Lower bound of the 95% CI for the difference in deaths per person-year	-0.001
43	Upper bound of the 95% CI for the difference in deaths per person-year	0.003
44	Years in trial period	5.4
45	Difference in deaths per 1000 person over the trial period	5.4
46	Lower bound of the 95% CI	-4.6
47	Upper bound of the 95% CI	15.3


1	Data	Table, @Binka et al 2002@, Pg. 598
2	Method of calculating the confidence intervals	Aschengrau and Seage 2014, Pg. 339 (http://bit.ly/1NIBoGK)