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Sexual behaviour trends by gender in a rural South African population-based cohort during the era of scaled-up access to VCT and ART, 2005-2010

Sexual behaviour trends by gender in a rural South African population-based cohort during the era of scaled-up access to VCT and ART, 2005-2010
Sexual behaviour trends by gender in a rural South African population-based cohort during the era of scaled-up access to VCT and ART, 2005-2010
Background: In rural KwaZulu-Natal, HIV incidence has been high and changed little even while HIV testing uptake has increased dramatically over the past six years. We examine population-level trends in sexual risk behaviour over the period 2005-2010 in a general-population cohort.

Methods: We report trends in sexual behaviour indicators from 2005 to 2010 for men and women aged 17-49, based on annual sexual behaviour surveys collected by the Africa Centre Demographic Information System (ACDIS). Indicators include the proportion ever had sex, the average number of sexual partners in the past year, the point-prevalence of concurrent sexual partnerships, and condom use at last sex with regular and casual partners. Trends are compared between groups defined by HIV status, knowledge of HIV status, and by other population characteristics. Unadjusted trends and trends adjusted for varying survey participation are presented. Missing data in completed surveys is adjusted for using multiple imputation incorporating demographic, socioeconomic, behavioural and health variables from the ACDIS. Responses are weighted by sex/age/education/location strata to adjust for survey non-participation.

Results: Reported sexual risk behaviours may have declined in men and women over 2005-2010, but the decline is less pronounced than would have appeared without adjusting for missing data and survey participation. Increases in reported condom usage have been greater than reductions in numbers of sexual partners. For both sexes, reported condom usage with regular partners increases more amongst those who know they are HIV-positive than those who have tested HIV-negative.

Conclusions: These population trends in self-reported sexual behaviour suggest that some behaviour change occurred between 2005-2010 in the general population. Changes occurred in both those living with and without HIV, but the data suggest that greater changes occurred in those who reported knowing they were HIV positive. The full presentation will also include results of sub-group analyses.
McGrath, N.
b75c0232-24ec-443f-93a9-69e9e12dc961
Eaton, J.W.
87b91b39-1d14-4d11-9755-d42361b7d3b2
Tanser, F.
b4ce79a2-0bf2-4021-89ad-0e759e2e2fc8
Bärnighausen, T.
55897d8c-b79c-4706-89f7-e9a8340f981f
Newell, M.L.
c6ff99dd-c23b-4fef-a846-a221fe2522b3
McGrath, N.
b75c0232-24ec-443f-93a9-69e9e12dc961
Eaton, J.W.
87b91b39-1d14-4d11-9755-d42361b7d3b2
Tanser, F.
b4ce79a2-0bf2-4021-89ad-0e759e2e2fc8
Bärnighausen, T.
55897d8c-b79c-4706-89f7-e9a8340f981f
Newell, M.L.
c6ff99dd-c23b-4fef-a846-a221fe2522b3

McGrath, N., Eaton, J.W., Tanser, F., Bärnighausen, T. and Newell, M.L. (2012) Sexual behaviour trends by gender in a rural South African population-based cohort during the era of scaled-up access to VCT and ART, 2005-2010. XIX International AIDS Conference (AIDS 2012), Washington, United States. 21 - 26 Jul 2012.

Record type: Conference or Workshop Item (Poster)

Abstract

Background: In rural KwaZulu-Natal, HIV incidence has been high and changed little even while HIV testing uptake has increased dramatically over the past six years. We examine population-level trends in sexual risk behaviour over the period 2005-2010 in a general-population cohort.

Methods: We report trends in sexual behaviour indicators from 2005 to 2010 for men and women aged 17-49, based on annual sexual behaviour surveys collected by the Africa Centre Demographic Information System (ACDIS). Indicators include the proportion ever had sex, the average number of sexual partners in the past year, the point-prevalence of concurrent sexual partnerships, and condom use at last sex with regular and casual partners. Trends are compared between groups defined by HIV status, knowledge of HIV status, and by other population characteristics. Unadjusted trends and trends adjusted for varying survey participation are presented. Missing data in completed surveys is adjusted for using multiple imputation incorporating demographic, socioeconomic, behavioural and health variables from the ACDIS. Responses are weighted by sex/age/education/location strata to adjust for survey non-participation.

Results: Reported sexual risk behaviours may have declined in men and women over 2005-2010, but the decline is less pronounced than would have appeared without adjusting for missing data and survey participation. Increases in reported condom usage have been greater than reductions in numbers of sexual partners. For both sexes, reported condom usage with regular partners increases more amongst those who know they are HIV-positive than those who have tested HIV-negative.

Conclusions: These population trends in self-reported sexual behaviour suggest that some behaviour change occurred between 2005-2010 in the general population. Changes occurred in both those living with and without HIV, but the data suggest that greater changes occurred in those who reported knowing they were HIV positive. The full presentation will also include results of sub-group analyses.

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More information

Published date: 23 July 2012
Venue - Dates: XIX International AIDS Conference (AIDS 2012), Washington, United States, 2012-07-21 - 2012-07-26
Related URLs:
Organisations: Primary Care & Population Sciences, Faculty of Social, Human and Mathematical Sciences

Identifiers

Local EPrints ID: 350638
URI: http://eprints.soton.ac.uk/id/eprint/350638
PURE UUID: a2696e68-daaa-425d-819b-5139c027d5fd
ORCID for N. McGrath: ORCID iD orcid.org/0000-0002-1039-0159
ORCID for M.L. Newell: ORCID iD orcid.org/0000-0002-1074-7699

Catalogue record

Date deposited: 27 Mar 2013 15:10
Last modified: 09 Nov 2021 03:30

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Contributors

Author: N. McGrath ORCID iD
Author: J.W. Eaton
Author: F. Tanser
Author: T. Bärnighausen
Author: M.L. Newell ORCID iD

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