HIV mortality in urban slums of Nairobi, Kenya 2003–2010: a period effect analysis

BMC Public Health

Table 4 Open cohort of females aged 15–49 years and males aged 15 – 54 years, 2003–2010, NUHDSS

Females aged 15 - 49	2003	2004	2005	2006	2007	2008	2009	2010
Population at start of year	12686	14566	13983	14777	15219	15360	16318	17569
Entered age group during year	313	330	340	293	390	345	365	386
In-migrated (from outside *DSA) during year	4199	4620	4134	3700	3456	4048	4551	4086
Died during year	153	118	106	108	86	88	91	119
Exited age group during year	83	55	68	69	101	86	168	69
Lost to follow-up during year (out-migrations)	3125	5824	3650	3465	3770	3363	3525	3907
Total person time contributed each year	16191.3	16118.1	16663.6	17086.0	17527.0	17702.3	19789.4	19989.1
**Out-migration rates	0.19	0.36	0.22	0.20	0.22	0.19	0.18	0.20
Males aged 15 - 54	2003	2004	2005	2006	2007	2008	2009	2010
Population at start of year	20245	22389	21019	21721	22021	22152	23116	24434
Entered age group during year	324	335	371	301	372	314	331	386
In-migrated (from outside *DSA) during year	4997	5658	4767	4545	4478	5107	5679	5121
Died during year	158	161	125	130	160	136	153	178
Exited age group during year	106	136	71	227	111	173	124	164
Lost to follow-up during year (out-migrations)	4259	7980	4528	4300	4653	4363	4480	4866
Total person time contributed each year	24371.4	23708.8	24169.6	24393.4	24874.4	25288.1	27321.2	27680.4
**Out-migration rates	0.17	0.34	0.19	0.18	0.19	0.17	0.16	0.18

*DSA Demographic Surveillance Area.
**Out-migration rates were calculated by dividing the number of persons who out-migrated each year by the total person years contributed by those present at the start of the year and those who in-migrated during the year.

ISSN: 1471-2458