Browsing by Author "Schmidt, Bey-Marrie"

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    Open Access
    Engaging adolescents in TB and clinical trial research through drama
    (BioMed Central, 2016-04-01) Schmidt, Bey-Marrie
    Abstract Background: The South African Tuberculosis Vaccine Initiative is based in Worcester where tuberculosis (TB) is endemic, and incidence rates are amongst the highest nationally. In high TB burden settings after an early childhood peak, incidence rates start to rise again in adolescents, therefore they are an important target group for tuberculosis vaccine research. In 2012, learners from a local school developed a one-off theatrical production out of an educational comic book Carina’s Choice, developed by the South African Tuberculosis Vaccine Initiative in 2010. A Wellcome Trust International Engagement grant allowed for this one-off production to be further developed, with input from university students and staff, and rolled out to schools in the Worcester area as an engagement and education intervention. Methods: Focus group feedback was used to identify key messages and to develop the play’s script. Qualitative methods were used to collect and analyse relevant data. Interviews were conducted with learner-actors, pre- and post-focus group feedback was obtained from a sample of school-going adolescents, and pre- and post-questionnaires were administered to adolescent audience members. Results: From the pre-drama focus group discussions, topics such as TB symptoms, stigma and transmission were identified as areas that needed attention. After the performances, adolescents showed improved knowledge on the identified topics and they discussed TB prevention measures. They highlighted transmission of TB during pregnancy as a further topic to be addressed in future iterations of the drama. Although stigma is a difficult phenomenon to interpret, post-drama participants understood that TB transmission could occur in all individuals. Learner-actors agreed with focus group participants that the play could impact the wider community if it were rolled out. Feedback from the South African Tuberculosis Vaccine Initiative staff verified that recruitment for an upcoming trial was facilitated by the preparedness that the play provided in recruitment areas. The study showed that before and after evaluations provide data on the usefulness of the play as an education tool. Conclusions: Theatre, presented and motivated by adolescent peers, can raise awareness of TB, and assist clinical trial preparedness and further engagement between trial staff and their trial community.
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    Evaluation of Xpert® MTB/RIF assay in induced sputum and gastric lavage samples from young children with suspected tuberculosis from the MVA85A TB vaccine trial
    (Public Library of Science, 2015) Bunyasi, Erick Wekesa; Tameris, Michele; Geldenhuys, Hennie; Schmidt, Bey-Marrie; Luabeya, Angelique Kany Kany; Mulenga, Humphrey; Scriba, Thomas J; Hanekom, Willem A; Mahomed, Hassan; McShane, Helen
    Objective Diagnosis of childhood tuberculosis is limited by the paucibacillary respiratory samples obtained from young children with pulmonary disease. We aimed to compare accuracy of the Xpert ® MTB/RIF assay, an automated nucleic acid amplification test, between induced sputum and gastric lavage samples from young children in a tuberculosis endemic setting. METHODS: We analyzed standardized diagnostic data from HIV negative children younger than four years of age who were investigated for tuberculosis disease near Cape Town, South Africa [2009-2012]. Two paired, consecutive induced sputa and early morning gastric lavage samples were obtained from children with suspected tuberculosis. Samples underwent Mycobacterial Growth Indicator Tube [MGIT] culture and Xpert MTB/RIF assay. We compared diagnostic yield across samples using the two-sample test of proportions and McNemar's χ 2 test; and Wilson's score method to calculate sensitivity and specificity. RESULTS: 1,020 children were evaluated for tuberculosis during 1,214 admission episodes. Not all children had 4 samples collected. 57 of 4,463[1.3%] and 26 of 4,606[0.6%] samples tested positive for Mycobacterium tuberculosis on MGIT culture and Xpert MTB/RIF assay respectively. 27 of 2,198[1.2%] and 40 of 2,183[1.8%] samples tested positive [on either Xpert MTB/RIF assay or MGIT culture] on induced sputum and gastric lavage samples, respectively. 19/1,028[1.8%] and 33/1,017[3.2%] admission episodes yielded a positive MGIT culture or Xpert MTB/RIF assay from induced sputum and gastric lavage, respectively. Sensitivity of Xpert MTB/RIF assay was 8/30[26.7%; 95% CI: 14.2-44.4] for two induced sputum samples and 7/31[22.6%; 11.4-39.8] [p = 0.711] for two gastric lavage samples. Corresponding specificity was 893/893[100%;99.6-100] and 885/890[99.4%;98.7-99.8] respectively [p = 0.025]. CONCLUSION: Sensitivity of Xpert MTB/RIF assay was low, compared to MGIT culture, but diagnostic performance of Xpert MTB/RIF did not differ sufficiently between induced sputum and gastric lavage to justify selection of one sampling method over the other, in young children with suspected pulmonary TB. Trial Registration ClinicalTrials.gov NCT00953927
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    The factors affecting a data harmonisation innovation in the Western Cape, South Africa
    (2019) Schmidt, Bey-Marrie; Colvin, Christopher J.; Leon, Natalie H.
    Lack of coordination and integration between routine electronic databases can limit effective data production and utilisation to support health management decision-making. There is currently a need to strengthen data support structures through the harmonisation of multiple databases across different types of health services and organisations. Data harmonisation (DH) is an innovative process of copying existing electronic data captured in various databases into a centralised data repository where the data is integrated and then transformed into useable formats for data users. However, there is limited evidence about the wide range of factors (especially social factors) that impact on DH innovations, such as historical factors, stakeholder relationships and institutional terrain. This doctoral research aimed to identify and explore the factors affecting a DH initiative currently underway in the Western Cape Province of South Africa. The research was conducted using three methodological approaches, namely a historical analysis and synthesis, a scoping review and an ethnographic case study. For the historical analysis, relevant articles were identified through literature searches and data were collected through document reviews and interviews with two key informants. Data were first organised chronologically according to key events that took place in the health information system (HIS). Text from websites, journal articles, internal documents, standard operating procedures and interview notes were then synthesised according to key themes related to HIS interventions. For the scoping review, systematic literature searches were conducted to identify studies that met the eligibility criteria of the review. Two review authors (one being the doctoral student) screened titles, abstracts and full-texts and then sampled studies based on the range, variation and similarities or differences in definitions and concepts and intervention descriptions. Manual coding and the filter option in Excel were used to provide (a) numerical analysis of the characteristics of included studies; (b) narrative synthesis of the different DH definitions, components and processes, as well as intentions, suggestions and/or explanations of how DH may lead to improved health management decision-making. For the ethnographic case study, data were collected using participant observation (including conversations, meeting attendance and telephone and email communication), document reviews and in-depth interviews. Participants included data clerks, facility managers, health information staff and managers, DH innovators, researchers, public health specialists and database managers. Raw data were collected in the form of meeting minutes, field notes, interview notes and document extracts. Data analysis was conducted using thematic data analysis. The doctoral student manually coded data by highlighting recurring themes and evidence, and by extracting prominent themes from the various sources of data. As a strategy for testing the validity of emerging themes, the doctoral student used triangulation of different data sources; including looking for consistencies or inconsistencies between data sources. Five main findings emerged from the doctoral research. The first finding affirms that DH is a multi-faceted intervention. In the literature, it is defined and described using different terms for similar aims and activities (such as record linkage, data warehousing, health information exchange). Key characteristics emerging from a synthesis of DH studies include: a process of multiple steps to integrate electronic data; different types of databases, institutions and technical activities; integrating data involves using unique patient identifiers; and framing interventions or activities around a specific scope or purpose (such as geographic area, disease surveillance and treatment management). DH interventions contributed to three levels of health management decision-making, namely clinical support, operational and strategic management, and populationlevel disease surveillance. The second finding relates to the concept of ‘cultivation’. Cultivation is an ongoing and iterative social process to deal with problems between people, institutions and technology as they engage with each other in the context of an emerging innovation. The third finding is about striking a balance between the role of champions in designing and piloting innovations and the role of institutions in operationalising innovations and incorporating them into the broader health system for acceptance amongst implementers and users and for sustainability in the future. The fourth finding is about the motivations and opportunities that contributed to the emergence of a DH initiative in the Western Cape Province of South Africa. Opportunities for the new DH initiative include well-developed individual electronic databases, a government-university collaboration, and the positive attitude of frontline health workers towards DH projects. The new initiative faced design and operational challenges such as difficulty to access data from different health authorities and the incompleteness of electronic data. However, new data access and transfer procedures and existing social relationships were important for dealing with the changes that occurred as DH projects were being operationalised. The last finding highlights tensions that emerged between DH innovators and other health information technology (HIT) stakeholders because of institutional and conceptual differences (such as different approaches to data access and governance, differences in conceptualisations of the value of data, and misunderstandings about the purpose of formal data procedures). DH innovators were able to navigate conflicts emerging from institutional and conceptual differences because of their strong leadership and team setup, institutional positioning and stakeholder engagement activities, to become institutionalised within the health system. These findings provide health system, information technology and research stakeholders with a broader understanding of the range of social factors that impact on DH innovations. This research promotes a more comprehensive approach in designing, implementing and evaluating DH innovations to limit poor outcomes of innovations and wasted resources.
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    Tuberculosis interventions to prevent transmission of infection in health care workers: a systematic review
    (2015) Schmidt, Bey-Marrie; Ehrlich, Rodney; Engel, Mark E
    Background: Tuberculosis is a major cause of morbidity and mortality as an estimated 8.6 million people developed TB and 1.3 million died from the disease in 2012. The number of deaths is high given that TB can be prevented. Health care workers are an at - risk group, since they are frequently in contact with infectious patients and/or work with infectious products. The World Health Organisation has declared the importance of finding innovative tools and strategies to prevent TB and implementing them successfully, especially for those with a high risk of TB transmission. Methods: This systematic review aims to undertake a quantitative review of tuberculosis interventions for health care workers in health care settings, so as to assess whether these interventions are effective in reducing the transmission of tuberculosis infection and disease. We will preferably include experimental studies, such as, randomised - controlled trials, but observational studies, such as controlled before and after studies and cohort studies will also be included in the absence of randomised - controlled studies. We will search databases, such as Medline, Scopus, Trip, LILACS and various trial registries. A hand search of reference lists of identified articles, abstracts, conference proceedings and campaign materials will be performed. Grey literature sites will also be used for the search. Data will be extracted using a single form. The quality of each study will be assessed in terms of selection bias, performance bias, attrition bias and detection bias. Thereafter a meta - analysis will be produced and subgroups will be analysed according to the three intervention types. Clinical and statistical significance will be determined for the included studies, and descriptive narratives of heterogeneous studies will be written. Discussion: Our results will be useful to policy - makers and public health officials for the prioritisation of those interventions identified as effective and critical .