Return to post-test counselling by out-of-treatment injecting drug users participating in a cross-sectional survey in north Vietnam.

Return to post-test counselling is essential for optimal individual and public health impact of voluntary counselling and testing (VCT) services. Our study assessed factors associated with return to post-test counselling among 309 out-of-treatment injecting drug users who underwent VCT as part of a cross-sectional survey in Bac Ninh, Vietnam during August and September 2003. The overall return rate to post-test counselling was 54% (n=167). While participants in the rural study district were significantly less likely (chi2=5.8; p<0.05) to return compared with participants in the town centre (42.7 versus 58.1%), return rates did not significantly vary by age, perception of personal HIV risk, HIV serostatus diagnosed by the study, counsellor, history of HIV testing or prior knowledge of HIV status. In a multivariate analysis, higher return rate was associated with residence in Bac Ninh town centre (adjusted OR=1.9; CI=1.1-3.1). Of HIV-positive participants (n=131), 45% (n=59) did not return to collect test results. In view of the findings it is crucial to address risk perception and benefits of collecting test results during pre-test counselling sessions in order to maximize the desired impact of community-based VCT services targeting IDUs in Vietnam.

The effect of order of presentation of verbal probability expressions on numerical estimates in a medical context.

Many medical decisions are made on a probability estimate. Models of risk benefit calculations in health behaviour rarely articulate how people perceive and appraise such probability. Cognitive processes may mediate the processing of probability expressions and may be important to understand the meaning or the range of meanings that probability statements portray to patients. Past studies have indicated that verbal expressions of probability are vague and subject to individual interpretation. On the theoretical level when subjects are asked to translate a set of verbal probability expressions, ranging from high to low, into their equivalent numerical expressions subjects usually produce a continuum of numerical equivalents also ranging from high to low. In practice clinicians frequently communicate information about uncertainty to the patients by verbal probability estimates. This study explored the effect of the order of presentation of the verbal expressions on the numerical probabilities produced by a group of medical students (n = 87) in relation to medical probabilities. The results showed that the order of presentation (descending vs. random) of the verbal probability expressions was found to have a significant effect on three of the seven numerical probabilities produced by the subjects. The order effect is discussed to together with implications for clinical practice.

Consent and antenatal HIV testing: the limits of choice and issues of consent in HIV and AIDS.

The mood of nihilism that affected HIV is now changing. The availability of new therapies allows for cautious optimism--especially in relation to mother-to-child transmission of HIV and preventative interventions. This has prompted a widespread policy shift towards HIV testing in pregnancy. In this context, informed consent is an ethical issue which needs to be addressed. This study reports on two sets of data exploring consent policy and practices in UK antenatal clinics. The first is derived from an audit of obstetric clinics in the UK and Eire (n = 288), with a 91% response rate. The second provided the views on consent and testing of a cohort of pregnant women attending four London antenatal clinics (n = 697). It was found that written consent was more likely to be obtained in units with a universal HIV testing offer (p = 0.0005); 77.8% of women believed consent would be requested, but 17.7% believed they could not refuse an HIV test. Their views were contrasted with those held about other antenatal screening tests. The data show that the generally haphazard method of giving information and obtaining consent in antenatal HIV provision is probably counterproductive in terms of test uptake and the ultimate goal of minimizing maternal-fetal HIV transmission.

A review of HIV testing policies and procedures for pregnant women in public maternity units of Porto Alegre, Rio Grande do Sul, Brazil.

HIV/AIDS is considered one of the major public health issues in Brazil, with 120,399 notified AIDS cases by 1998 (Aristedes Barbosa et al., 1998). Rio Grande do Sul (RS) reports the highest HIV prevalence in women in the country (Louireiro et al., 1998) and local sero-surveillance studies note an increase in HIV prevalence in pregnancy from 2.6% in 1996 (Buchalter et al., 1996) to 3.3% in 1997 (Ferreira & Valente, 1997). As a result, the Ministry of Health has recommended that all pregnant women are offered an HIV test. This study reviewed HIV testing policies and procedures, reported by obstetric staff in public health care centres in Porto Alegre. The beliefs and practices of obstetric health care professionals towards HIV testing and prevention for pregnant women were also examined, given the crucial role of obstetric staff in the implementation of successful antenatal HIV testing procedures. In total, 106 (69.3%) of eligible obstetric health care professionals responded to a postal questionnaire during April and June 1998. Eighty-six (83.5%) of respondents reported a policy of universal offer of HIV testing. A few reported selective offer (n = 9, 8.7%) and eight (7.8%) reported a policy of testing on request only. When selection was operational, respondents reported aiming at women who disclosed intravenous drug use (88.9%), women whose partner had a history of injecting drugs (77.8%), recipients of blood products prior to 1985 (66.7%), women who reported one or more sexually transmitted diseases (STDs) (88.9%) and women whose current or previous partner ever had sex with a man (77.8%). Respondents reported that consent for an HIV test was acquired 'verbally' by the majority (n = 90, 88.2%), whilst ten (9.8%) acquired consent in writing. Two (2.0%) reported that women's consent for an HIV test was not asked for. Units with universal antenatal HIV testing policy were significantly more likely to have had pregnant women test HIV-positive compared with non-universal policy units (U = 13.500, p = 0.050). It appears that whilst the majority of the public health centres were offering an HIV test to all pregnant women in Porto Alegre by 1998, a lack of structured auditing of the actual uptake of HIV testing by pregnant women still remains. Local HIV testing strategy would greatly benefit from such data.

HIV testing and prevention issues for women attending termination assessment clinics.

The prevalence of HIV infection in London is nearly threefold in women who seek terminations compared to women who carry to term. Despite the higher prevalence, HIV testing is not systematically offered to women attending termination of pregnancy assessment clinics (TOPCs). The Department of Health has given clear guidance on HIV testing in antenatal clinics and most London antenatal clinics have implemented policies on HIV testing. No similar guidance exists for TOP clinics. This paper describes the results from a study examining HIV testing and prevention issues for women attending five TOPCs in North London. Data on risk disclosure, HIV testing intentions and awareness of HIV infection and testing were analysed for 141 women who completed a self-administered questionnaire. Women who expressed an intention to have an HIV test were more likely to be from ethnic minority origin, to report that their partner intends to have an HIV test and to perceive it as easier to talk to their partner about HIV testing, compared to women who did not report an intention to test for HIV The former group also were more likely to have had a previous HIV test and perceived their personal control for staying HIV negative as greater compared to others. Fifty six (39.8 per cent) women disclosed one or more potential risk factors for HIV Women with risks were more knowledgeable about HIV infection, perceived their personal chances of being HIV positive as greater and experienced greater worry about past risks, compared to women who disclosed no risks. However, women who disclosed risk factors were no more likely to intend to have an HIV test. Knowledge on HIV infection, testing and potential interventions to reduce mother-to-baby transmission was low, with fewer than one in four women being aware that transmission may be reduced by AZT, Caesarean section and bottle feeding. Given the findings about the level of risk disclosed and women's positive attitude towards information on HIV infection and testing, this client group should no longer be overlooked in the planning of future policies on HIV testing for populations at risk.

PIP: In London, women who seek induced abortions have a level of HIV seroprevalence almost 3 times higher than do women who carry their pregnancies to term. However, despite this higher prevalence, HIV testing is not systematically offered to women attending termination of pregnancy assessment clinics (TOPCs). This paper examines results from a study of HIV testing and prevention issues for women attending 5 TOPCs in North London. Data on risk disclosure, HIV testing intentions, and awareness of HIV infection and testing were analyzed for 141 women who completed a self-administered questionnaire. Women who expressed an intention to have an HIV test were more likely to be of ethnic minority origin, to report that their partner intends to have an HIV test, and to perceive it as easier to talk to their partner about HIV testing, compared to women who reported no intention to test for HIV. The former group was also more likely to have had a previous HIV test and felt better able to remain HIV negative. 39.8% of women disclosed 1 or more potential risk factors for HIV. However, although women with risks were more knowledgeable about HIV and had a stronger sense of their potential HIV infection, they were no more likely than women who disclosed no risks to have an HIV test. Less than 25% knew that the risk of mother-to-child HIV transmission can be reduced through AZT therapy, cesarean section, and bottle feeding.