Monitoring trends in HIV prevalence among young people, aged 15 to 24 years, in Manicaland, Zimbabwe

Table 1 HIV prevalence estimates by socio-demographic characteristics among youth (aged 15-24 years) in the sample general population survey and ANC surveillance in Manicaland, Zimbabwe, 1998-2005*

	Sample general population survey			ANC surveillance
	(Aged 15-24 years)			(Aged 15-24 years)
HIV prevalence estimates by socio-demographic characteristics	Round 1 (1998-2000) HIV % (n/N)	Round 2 (2001-2003) HIV % (n/N)	Round 3 (2003-2005) HIV % (n/N)	Round 1 (1998-2000) HIV % (n/N)	Round 2 (2001-2003) HIV % (n/N)	Round 3 (2003-2005) HIV % (n/N)
Age
15-19 years	4.5 (72/1600)	1.9 (25/1328)	2.6 (96/3738)	12.6 (33/261)	7.8 (19/245)	4.6 (11/242)
20-24 years	18.6 (354/1905)	9.6 (79/823)	10.9 (288/2636)	21.2 (87/410)	16.4 (62/379)	14.0 (49/350)
Gender
Male^†	6.2 (106/1712)	2.3 (21/929)	2.7 (77/2886)
Female	17.9 (320/1793)	6.8 (83/1222)	8.8 (307/3488)	17.9 (120/671)	13.0 (81/624)	10.1 (60/592)
Education
None/primary	18.9 (155/819)	11.3 (37/329)	10.8 (113/1043)	18.3 (49/268)	11.3 (24/213)	10.8 (22/204)
Secondary/higher	10.1 (271/2686)	3.6 (66/1819)	5.0 (263/5287)	17.7 (71/402)	13.9 (57/411)	9.8 (38/388)
Residence ^‡
Town	18.5 (109/588)	10.1 (31/308)	9.7 (99/1016)	19.7 (23/117)	12.3 (14/114)	9.4 (12/128)
Commercial estate	12.2 (140/1152)	5.3 (33/618)	7.0 (111/1595)	19.0 (41/216)	14.6 (32/220)	11.3 (24/213)
Subsistence farm	8.8 (103/1174)	3.5 (28/806)	4.4 (105/2386)	18.4 (40/217)	11.8 (26/220)	11.7 (19/163)
Roadside trading	12.5 (74/591)	2.9 (12/419)	5.0 (69/1377)	13.2 (16/121)	12.9 (9/70)	5.7 (5/88)

* P value results of Z-score tests for differences in the proportional change in prevalence trends between the two data sources (i.e., sample general population survey compared to ANC surveillance) by socio-demographic groupings (e.g., those aged 15-19 years versus those aged 20-24 years) for round 1 to round 2 and round 2 to round 3 were highly non-significant (p value >0.10), except for HIV prevalence trends by educational status where p = 0.092. As there was no evidence for any differences in trends by socio-demographic groupings, these results are not presented.
^†Men aged 15-16 years were ineligible to participate in rounds 1 and 2.
^‡ In ANC surveillance, "Residence" indicates the location of the ANC clinic where the woman sought prenatal services and not necessarily where she resides.