Facility-based HIV self-testing strategies may substantially and cost-effectively increase the number of men and youth tested for HIV in Malawi: results from an individual-based mathematical model

INTRODUCTION

Malawi is rapidly closing the gap in achieving the UNAIDS 95-95-95 targets, with 90% of people living with HIV in Malawi aware of their status. As we approach epidemic control, interventions to improve coverage will become more costly. There is, therefore, an urgent need to identify innovative and low-cost strategies to maintain and increase testing coverage without diverting resources from other HIV services. The objective of this study is to model different combinations of facility-based HIV testing modalities and determine the most cost-effective strategy to increase the proportion of men and youth testing for HIV.

METHODS

A data-driven individual-based model was parameterized with data from a community-representative survey (socio-demographic, health service utilization and HIV testing history) of men and youth in Malawi (data collected August 2019). In total, 79 different strategies for the implementation of HIV self-testing (HIVST) and provider-initiated-testing-and-counselling at the outpatient department (OPD) were evaluated. Outcomes included percent of men/youth tested for HIV in a 12-month period, cost-effectiveness and human resource requirements. The testing yield was assumed to be constant across the scenarios.

RESULTS

Facility-based HIVST offered year-round resulted in the greatest increase in the proportion of men and youth tested in the OPD (from 45% to 72%-83%), was considered cost-saving for HIVST kit priced at $1.00, and generally reduced required personnel as compared to the status quo. At higher HIVST kit prices, and more relaxed eligibility criteria, all scenarios that considered year-round HIVST in the OPD remained on the cost-effectiveness frontier.

CONCLUSIONS

Facility-based HIVST is a cost-effective strategy to increase the proportion of men/youth tested for HIV in Malawi and decreases the human resource requirements for HIV testing in the OPD-providing additional healthcare worker time for other priority healthcare activities.

Evaluation of a Multisite Safe Infant Sleep Education and Crib Distribution Program

Rates of sleep-related infant deaths have plateaued in the past few decades despite ongoing infant sleep practice recommendations to reduce risk of sleep-related infant deaths by the American Academy of Pediatrics. The state department of public health trained facilitators at 28 sites across the state to facilitate a group safe sleep educational program. A prospective, matched pre- and post-test cohort design with follow-up was used to evaluate changes in self-reported knowledge, intentions, and practices. The final sample included 615 matched pre- and post-test surveys, and 66 matched follow-up surveys. The proportion of correct responses on all knowledge and intended practice items increased significantly from pre- to post-test. When asked where their babies would have slept if they had not received the portable crib, 66.1% of participants planned to use a recommended sleep location (e.g., crib or bassinet). At post-test, 62.3% planned to change something about their infant’s sleep based on what they learned. At follow-up, knowledge was maintained for all but two items and practices and for half of practice items. The results suggest that participating in the education program was associated with increased knowledge and intended adherence, but that these changes were not maintained at follow-up. These results are in line with the research literature that finds a difference in intentions and actual practices after the baby is born.

Priority Populations Toolkits: Enhancing researcher readiness to work with priority populations

The National Center for Advancing Translational Sciences has called for more comprehensive research with priority populations to reduce disparities and for the development of additional resources to assist researchers in implementing these recommendations. Here we report the development and initial evaluation of five Priority Populations Toolkits, which are resources developed by the University of Illinois Center for Clinical and Translational Science to meet these goals. Three aims guide the content: increasing knowledge, facilitating communication, and improving research design. Materials were curated from scientific literature reviews and Internet searches and revised iteratively. Analytics and user surveys provide information about usage. In 22 months, 387 unique users accessed the toolkits. The top reason for usage was to improve research recruitment. Comprehensive toolkits for working with priority populations show promising potential for increasing knowledge and readiness to work with underrepresented populations. Further toolkit development and evaluation of effectiveness are warranted.

E-cigarette adverts and children's perceptions of tobacco smoking harms: an experimental study and meta-analysis

OBJECTIVES

Children exposed to electronic cigarette (e-cigarette) adverts may perceive occasional tobacco smoking as less harmful than children not exposed to e-cigarette adverts. Given the potential cross-cueing effects of e-cigarette adverts on tobacco smoking, there is an urgent need to establish whether the effect found in prior research is robust and replicable using a larger sample and a stronger control condition.

DESIGN

A between-subjects experiment with one independent factor of two levels corresponding to the advertisements to which participants were exposed: glamorous adverts for e-cigarettes, or adverts for objects unrelated to smoking or vaping.

PARTICIPANTS

English school children aged 11-16 (n=1449).

OUTCOMES

Perceived harm of occasional smoking of one or two tobacco cigarettes was the primary outcome. Secondary outcomes included: perceived harm of regular tobacco smoking, susceptibility to tobacco smoking and perceived prevalence of tobacco smoking in young people. Perceptions of using e-cigarettes were gauged by adapting all the outcome measures used to assess perceptions of tobacco smoking.

RESULTS

Tobacco smokers and e-cigarette users were excluded from analyses (final sample n=1057). Children exposed to glamorous e-cigarette adverts perceived the harms of occasional smoking of one or two tobacco cigarettes to be lower than those in the control group (Z=-2.13, p=0.033). An updated meta-analysis comprising three studies with 1935 children confirmed that exposure to different types of e-cigarette adverts (glamorous, healthful, flavoured, non-flavoured) lowers the perceived harm of occasional smoking of one or two tobacco cigarettes (Z=3.21, p=0.001).

CONCLUSIONS

This study adds to existing evidence that exposure to e-cigarette adverts reduces children's perceptions of the harm of occasional tobacco smoking.

'The times are changing': New Zealand smokers' perceptions of the tobacco endgame

BACKGROUND

The New Zealand government's goal of achieving a smoke-free society by 2025 reflects growing interest in 'endgame' solutions to tobacco smoking. However, tobacco companies have framed 'endgame' strategies as contrary to individual freedoms and 'choice'; these claims heighten politicians' sensitivity to 'nanny state' allegations and may undermine tobacco control policies. Public support for stronger policies could strengthen political will; however, little is known about how smokers perceive endgame scenarios or the factors underlying their support or opposition to these.

METHODS

The authors conducted 47 in-depth interviews with four priority groups: Māori, Pacific, young adults and pregnant women; all were smokers or very recent quitters. The authors used thematic analysis to interpret the transcripts.

RESULTS

Most participants strongly supported the 2025 smoke-free goal, recognised the broader social good that would result and accepted the personal inconvenience of quitting. Yet they wanted to retain control over when and how they would quit and asserted their 'freedom' to smoke. Participants identified interventions that would extend current policy and maintain the autonomy they valued; the authors classified these into four themes: restricting supply, diminishing visibility, decreasing availability and affordability, and increasing quit support.

CONCLUSIONS

Politicians may have a stronger mandate to implement endgame policies than they appreciate. Participants' use of industry arguments when asserting their freedom to 'choose' to smoke and quit suggests a need for denormalisation strategies that challenge industry propaganda, demonstrate how endgame measures would empower smokers and re-iterate the community benefits a smoke-free society will deliver.