Background: A majority of women in Kenya do not know their HIV status and are therefore unable to take preventive measures or medication in order to prolong their lives. Objectives: This study investigates the key determinants of HIV testing in Kenya and documents how these changed over the 1998-2008 period. Method: This study uses data from the 1998, 2003 and 2008 Kenya Demographic and Health surveys. Principal components analysis was used to compute indices of HIV knowledge, HIV-related stigma, media exposure and decision making. Survey logistic regression analysis was used to determine factors that had a statistically-significant association with ever having been tested for HIV. Results: Testing was significantly higher in 2008 compared with the previous surveys. In 1998, 14.7% of the women had tested for HIV. The rate increased to 15.0% in 2003 and then to 59.2% in 2008. In the 1998 and 2003 Kenya Demographic and Health surveys, respondents’ age, region of residence, education, knowledge of someone who had died from HIV-related illness and media exposure were the main determinants of testing. In the 2008 study, HIV-related stigma, occupation and the partner’s level of education were found to be associated with HIV testing. Conclusion: Despite efforts to scale up voluntary counselling and testing in Kenya over the 1998-2008 period, HIV testing amongst women is still quite low. Prevention and control programmes in Kenya need to focus on reducing HIV-related stigma, increasing access to testing in rural areas and increasing access amongst women with little or no education.
Data on HIV testing and other relevant covariates were extracted from the 1998, 2003 and 2008 Kenya Demographic and Health Surveys (KDHSs). These surveys were designed to provide data that can be used by various stakeholders in order to monitor the population and health situation in Kenya. Data were collected on fertility, family planning and maternal and child health. Other data collected also included HIV prevalence, domestic violence and malaria statistics. The 1998 KDHS was the third national demographic and health survey conducted in the country. Based on a multistage cluster-sampling approach, a nationally-representative sample of 7881 women aged 15–49 and 3407 men aged 15–54 were interviewed. The 2003 KDHS was implemented using a similar sampling methodology to interview 8195 women aged 15–49 and 3578 men aged 15–54. Finally, the 2008 KDHS was the fifth national demographic and health survey conducted in the country. A total of 9057 households were selected using a multistage cluster-sampling process whereby 8444 women aged 15–49 and 3465 men aged 15–54 were interviewed. The samples in each case provide estimates for Kenya as a whole, for urban and rural areas in each of the eight provinces. This study was based on secondary data with all participant identifiers removed. Survey procedures and instruments were approved by the Scientific and Ethical Review Committee of the Kenya Medical Research Institute (KEMRI) and by the Ethics Committee of the Opinion Research Corporation Macro International Incorporated (ORC Macro Inc.), Calverton, USA. Ethical permission for use of the data in the present study was obtained from ORC Macro Inc. Details concerning the data-collection protocols are available on the Measures Demographic and Health Surveys (DHS) website (http://www.measuredhs.com/). In this study, we restricted our analysis to women aged 15–49 years and considered the response to the question, ‘Have you ever been tested for HIV?’ to be our primary response variable. Several other variables identified from the literature were cross-classified with this variable. A Pearson’s chi-square test was then used to detect any association between the response variable and the categorical variables identified. Survey logistic-regression analysis, with stepwise elimination, was carried out using STATA 11.0 under the svy command and statistically-significant covariates were identified. All p-values less than 0.05 were considered to be significant. Separate statistical analysis was carried out for each of the 1998, 2003 and 2008 data sets. The independent variables entertained included: Principal component analysis20 was used to generate indices regarding HIV knowledge, stigma, media exposure and decision making. The HIV knowledge-perception index was created based on responses to the following questions: ‘Can a person reduce risk of getting AIDS (Acquired immune deficiency syndrome) by not having sex at all?’, ‘Can a person reduce the chances of AIDS by always using condoms during sex?’, ‘Can a person reduce the chance of AIDS by having one sex partner with no other partner?’, ‘Can a person get AIDS from mosquito bites?’, ‘Can a person get AIDS by sharing food with person who has AIDS?’ and ‘Can a healthy person have AIDS?’. On the basis of their factor scores, respondents were classified as having low-, moderate- or high knowledge with regard to the causes of HIV and the basic issues surrounding the disease. Stigma has been defined in the literature as an attribute or label that sets a person apart from others and links the labelled person to undesirable characteristics.21 Specifically, stigma related to AIDS has been defined as ‘the prejudice, discounting, discrediting, and discrimination that are directed at people perceived to have AIDS’.22 A stigma index was created based on responses to the questions: ‘Willing to care for relative with AIDS’; ‘Person with AIDS allowed to continue teaching’; and ‘Would buy vegetables from vendor with AIDS’. Based on factor scores, respondents were classified as having low-, medium- or high HIV-related stigma. A media-exposure index was also computed using principal component analysis based on responses to questions posed on the frequency of watching television, listening to radio and reading newspapers. The respondents were then classified as having low-, medium- or high media exposure. The decision-making index was computed based on the respondents’ answers to the questions: ‘Final say on own health care’; ‘Final say on making large household purchases’; ‘Final say on making household purchases for daily needs’; ‘Final say on visits to family or relatives’; ‘Final say on food to be cooked each day’; and ‘Final say on deciding what to do with money husband earns’. The decision-making index was a trichotomous variable with levels ‘independent’, ‘consults’ and ‘subservient’. For the 1998 KDHS, the decision-making index was based only on the response to the question, ‘Who decides how to spend money?’, as the other proxy questions were not included in the survey questionnaire.
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