Tuberculosis in the community: 1. Evaluation of a volunteer health worker programme to enhance adherence to anti-tuberculosis treatment

Predicting Treatment Adherence among Patients Attending Primary Health Care Clinics: The Utility of the Theory of Planned Behaviour

Treatment regimens for conditions such as hypertension and Type II diabetes require strict adherence to medical instructions. Yet, adherence among patients living with chronic medical conditions attending public health clinics is typically low. The present study sought to determine the extent to which the Theory of Planned Behaviour (TPB) was able to significantly explain variance in adherence intentions and behaviour in a sample of 117 formerly disadvantaged South Africans living with diabetes and hypertension in the Western Cape. The results showed that the linear combination of TPB variables — Attitudes, Perceived behavioural control, and Subjective norms — was able to account for 47 per cent of the variance in adherence intentions and 23 per cent of the variance in self-reported adherence behaviour. The addition of the variables Psychological distress and Social support to the two regression models, hypothesised to add predictive power to the TPB, yielded non-significant results. The findings of the study are discussed in the context of applying theoretical models of behaviour developed in the industrially developed world and tested on middle-class subjects to patient samples in developing countries such as South Africa. Our findings suggest that social cognitive models of health behaviour such as the TPB may be useful in predicting treatment adherence but should be used in a critical and cautious manner.

Impact of Community-Based DOT on Tuberculosis Treatment Outcomes: A Systematic Review and Meta-Analysis

BACKGROUND

Poor adherence to tuberculosis (TB) treatment can lead to prolonged infectivity and poor treatment outcomes. Directly observed treatment (DOT) seeks to improve adherence to TB treatment by observing patients while they take their anti-TB medication. Although community-based DOT (CB-DOT) programs have been widely studied and promoted, their effectiveness has been inconsistent. The aim of this study was to critical appraise and summarize evidence of the effects of CB-DOT on TB treatment outcomes.

METHODS

Studies published up to the end of February 2015 were identified from three major international literature databases: Medline/PubMed, EBSCO, and EMBASE. Unpublished data from the grey literature were identified through Google and Google Scholar searches.

RESULTS

Seventeen studies involving 12,839 pulmonary TB patients (PTB) in eight randomized controlled trials (RCTs) and nine cohort studies from 12 countries met the criteria for inclusion in this review and 14 studies were included in meta-analysis. Compared with clinic-based DOT, pooled results of RCTs for all PTB cases (including smear-negative or -positive, new or retreated TB cases) and smear-positive PTB cases indicated that CB-DOT promoted successful treatment [pooled RRs (95%CIs): 1.11 (1.02-1.19) for all PTB cases and 1.11 (1.02-1.19) for smear-positive PTB cases], and completed treatment [pooled RRs (95%CIs): 1.74(1.05, 2.90) for all PTB cases and 2.22(1.16, 4.23) for smear-positive PTB cases], reduced death [pooled RRs (95%CIs): 0.44 (0.26-0.72) for all PTB cases and 0.39 (0.23-0.66) for smear-positive PTB cases], and transfer out [pooled RRs (95%CIs): 0.37 (0.23-0.61) for all PTB cases and 0.42 (0.25-0.70) for smear-positive PTB cases]. Pooled results of all studies (RCTs and cohort studies) with all PTB cases demonstrated that CB-DOT promoted successful treatment [pooled RR (95%CI): 1.13 (1.03-1.24)] and curative treatment [pooled RR (95%CI): 1.24 (1.04-1.48)] compared with self-administered treatment.

CONCLUSIONS

CB-DOT did improved TB treatment outcomes according to the pooled results of included studies in this review. Studies on strategies for implementation of patient-centered and community-centered CB-DOT deserve further attention.

The conceptual framework and assessment methodology for the systematic reviews of community-based interventions for the prevention and control of infectious diseases of poverty

This paper describes the conceptual framework and the methodology used to guide the systematic reviews of community-based interventions (CBIs) for the prevention and control of infectious diseases of poverty (IDoP). We adapted the conceptual framework from the 3ie work on the 'Community-Based Intervention Packages for Preventing Maternal Morbidity and Mortality and Improving Neonatal Outcomes' to aid in the analyzing of the existing CBIs for IDoP. The conceptual framework revolves around objectives, inputs, processes, outputs, outcomes, and impacts showing the theoretical linkages between the delivery of the interventions targeting these diseases through various community delivery platforms and the consequent health impacts. We also describe the methodology undertaken to conduct the systematic reviews and the meta-analyses.

The effects on tuberculosis treatment adherence from utilising community health workers: a comparison of selected rural and urban settings in Kenya

INTRODUCTION

Community Health Workers (CHWs) have been utilised for various primary health care activities in different settings especially in developing countries. Usually when utilised in well defined terms, they have a positive impact. To support Kenya's policy on engagement of CHWs for tuberculosis (TB) control, there is need to demonstrate effects of utilising them.

OBJECTIVES

This study assessed TB treatment adherence among patients who utilised CHWs in management of their illness in comparison to those who did not in urban and rural settings.

METHODS

A retrospective cohort study was conducted in selected health facilities using standard clinical records for each TB patient registered for treatment between 2005 to 2011. Qualitative data was collected from CHWs and health care providers.

RESULTS

The study assessed 2778 tuberculosis patients and among them 1499 (54%) utilized CHWs for their TB treatment. The urban setting in comparison with the rural setting contributed 70% of patients utilising the CHWs (p<0.001). Overall treatment adherence of the cohort was 79%. Categorizing by use of CHWs, adherence among patients who had utilized CHWs was 83% versus 68% among those that had not (p<0.001). In comparison between the rural and urban settings adherence was 76% and 81.5% (p<0.001) respectively and when categorized by use of CHWs it was 73% and 90% (p<0.001) for the rural and urban set ups respectively. Utilisation of CHWs remained significant in enhancing treatment adherence in the cohort with unadjusted and adjusted ORs; OR 2.25, (95% 1.86-2.73) p<0.001 and OR 1.98 (95% 1.51-2.5) p<0.001 respectively. It was most effective in the urban set-up, OR 2.65 (95% 2.02-3.48, p<0.001) in comparison to the rural set up, OR 0.74 (95% 0.56-0.97) p = 0.032.

CONCLUSION

Utilisation of CHWs enhanced TB treatment adherence and the best effects were in the urban set-up.

Towards an empowerment approach in tuberculosis treatment in Cape Town, South Africa: a qualitative analysis of programmatic change

Background

Tuberculosis rates in the world remain high, especially in low- and middle-income countries. International tuberculosis (TB) policy generally recommends the use of directly observed therapy (DOT) to ensure treatment adherence.

Objective

This article examines a change in TB treatment support that occurred in 2005 in South Africa, from DOT to the enhanced TB adherence programme (ETA).

Design

Seven key individuals representing academics, policy makers and service providers involved in the development of the ETA programme or knowledgeable about the issue were purposively sampled and interviewed, and participant observation was conducted at ETA programme steering group meetings. Qualitative content analysis was used to analyse the data, drawing on the Kingdon model of agenda setting. This model suggests that three independent streams – problem, policy and politics – come together at a certain point, often facilitated by policy entrepreneurs, to provide an opportunity for an issue to enter the policy agenda.

Results

The results suggest the empowerment-oriented programme emerged through the presence of policy entrepreneurs with access to resources. Policy entrepreneurs were influenced by a number of simultaneously occurring challenges including problems within the existing programme; a perceived mismatch between patient needs and the existing TB treatment model; and the TB-HIV co-epidemic. Policy entrepreneurs saw the ART approach as a possible solution to these challenges.

Conclusions

The Kingdon model contributed to describing the process of policy change. Research evidence seemed to influence this change diffusely, through the interaction of policy entrepreneurs and academics.

A classification and meta-analysis of community-based directly observed therapy programs for tuberculosis treatment in developing countries

In many developing countries, Directly Observed Therapy (DOT) for tuberculosis has been undertaken mainly in the clinic setting. However, clinic-based DOT may create a high patient load in already overburdened health facilities and increase barriers to care by requiring patients to travel to clinic frequently for therapy. Community-based DOT (CBDOT) may overcome some of these problems. This aims of this review are (a) to describe the main features of CBDOT programs, and (b) to compare features and outcomes of CBDOT programs that do and do not offer financial reward for CBDOT providers. Ten major features define CBDOT program structure and function. Programs that paid their CBDOT providers tended to differ from unpaid programs based on all of these features. CBDOT programs in which providers received financial reward had success rates of 85.7 versus 77.6% in programs without financial reward for providers. This difference was not statistically significant. CBDOT programs fall into two major archetypes, which differ in their structure and possibly in their outcomes.

Manifestations of tuberculosis stigma within the healthcare system: the case of Sekondi-Takoradi Metropolitan district in Ghana

OBJECTIVES

To explore the manifestations of tuberculosis (TB) stigma within the healthcare system.

METHOD

Twenty-one individual interviews (16 females and 5 males) and six focus groups (1 with health managers, 1 with staff providing services for TB patients, and 4 with general staff) were conducted among healthcare workers (HCWs) and the generated data analysed using grounded theory principles and procedures.

RESULTS

TB stigma manifests in three broad and inter-related ways within the healthcare system: behaviour towards TB patients; attitudes towards TB work; and administrative procedures and policies of healthcare mangers. Healthcare workers expressed fear of infection when interacting with TB patients; a fear which intensifies after the confirmation of the diagnosis. For fear of infection, they shuned, avoided, and advocated the segregation of TB patients at home and in the hospitals. They sometimes maltreated the patients, and accused and blamed them for deliberately infecting others. Posting to TB units/wards is viewed as a punishment, with majority indicating refusal to work there or be trained as TB nurse/doctor. They maintained that those working at TB units should be given incentives. Health managers also situated TB units/wards in isolated parts of the hospital, and do not provide adequate tools, equipment, support and supervision for those offering TB services.

CONCLUSIONS

Fear of infection underlies the stigmatisation of TB by HCWs and worsen by administrative procedures and policies of healthcare managers. To help minimise TB stigma, a national guideline for the prevention of TB in HCWs should be developed as this may help protect them and alleviate their fear of infection. Rewarding and motivating HCWs involved in TB control may also improve their attitudes towards TB and those suffering from the disease. Furthermore, interventions to reduce TB stigma should be put in place, and the effects these may have on TB treatment outcomes investigated.

Health care seeking among pulmonary tuberculosis suspects and patients in rural Ethiopia: a community-based study

BACKGROUND

Health care seeking is a dynamic process that is influenced by socio-demographic, cultural and other factors. In Ethiopia, there are limited studies regarding the health seeking behaviour of tuberculosis (TB) suspects and TB patients. However, a thorough understanding of patients' motivation and actions is crucial to understanding TB and the treatment of disease. Such insights would conceivably help to reduce delay in diagnosis, improve treatment adherence and thereby reduce transmission of TB in the community. The objective of this study was to describe and analyze health care seeking among TB suspects and pulmonary TB (PTB) cases in a rural district of the Amhara Region in Ethiopia.

METHODS

Study kebeles were randomly selected in a cross-sectional study design. House-to-house visits were conducted in which individuals aged 15 years and above in all households of the kebeles were included. Subjects with symptoms suggestive of TB were interviewed about their health seeking behaviour, socio-demographic and clinical factors using a semi-structured questionnaire. Logistics regression analysis was employed to assess associations between the independent and outcome variables.

RESULTS

The majority, 787 (78%), TB suspects and 33 (82.5%) PTB cases had taken health care actions for symptoms from sources outside their homes. The median delay before the first action was 30 days. In logistics regression, women (AOR 0.8, 95% CI 0.6, 0.9) were found to be less likely to visit a medical health provider than men. Those with a long duration of cough (AOR 1.5, 95% CI 1.03, 2.1) and those with a previous history of TB (AOR 1.5, 95% CI 1.03, 2.3) were more likely to visit a medical health provider compared to those with a shorter duration of cough and with no history of TB.

CONCLUSION

The majority of TB suspects and PTB cases had already taken health care actions for their symptoms at the time of the survey. The availability of a simple and rapid diagnostic TB test for use at the lowest level of health care and the involvement of all health providers in case finding activities are imperative for early TB case detection.

Tratamento supervisionado em pacientes portadores de tuberculose utilizando supervisores domiciliares em Vitória, Brasil

OBJETIVO: Avaliar a utilização de supervisores domiciliares para dose supervisionada do tratamento(DOT), em pacientes portadores de tuberculose. MÉTODOS: Trata-se de um estudo descritivo prospectivo com amostra composta por pacientes com diagnóstico de tuberculose pulmonar. Participaram deste estudo 98 pacientes. Um protocolo de capacitação do paciente e sua família foi implementado. Após este treinamento, o paciente poderia escolher entre um supervisor domiciliar e um profissional de saúde. Os métodos de análise descritiva utilizados foram a freqüência absoluta e relativa. RESULTADOS: Um supervisor familiar foi escolhido por 94 pacientes (96%). O percentual de cura foi de 99%. O parceiro foi escolhido por 49% e algum outro familiar o foi por 28% dos pacientes. A equipe de pesquisa precisou assumir o DOT em 3% dos casos. O comparecimento regular para a supervisão foi de 67%. Verificou-se que 24% dos problemas encontrados neste modelo de DOT referiram-se ao esquecimento em administrar ou tomar as medicações, por parte do supervisor e do paciente, respectivamente, sendo que 39% dos pacientes deixaram de tomar a medicação por um dia e 31% esqueceram-se de tomá-la por dois dias durante o tratamento. Houve troca de supervisor em 9% da amostra, perda de medicação pelo paciente em algum momento do tratamento em 9% e intolerância do paciente à medicação em 8%. CONCLUSÕES: O DOT supervisionado pelo familiar mostrou-se eficaz e de baixo custo. No entanto, a adesão ao tratamento não de deve a um só fator, mas ao conjunto de medidas adotadas: vale transporte; ações educativas; e, principalmente, a abordagem individualizada.

The contribution of volunteers to a successful community-orientated tuberculosis treatment centre in an urban setting in Nepal: a qualitative assessment of volunteers' roles and motivations

PURPOSE

The purpose of the paper is to show that community involvement is a successful way of overcoming certain barriers to the successful management of the current tuberculosis epidemic, namely delayed presentation and non-completion of treatment. Volunteers are an important resource for engaging with the community. This research, conducted in an urban TB treatment centre in Nepal, seeks to investigate the motivations of TB volunteers, and how these motivations can be increased to involve volunteers, and the community, in fulfilling their maximum potential in delivering successful TB treatment programmes.

DESIGN/METHODOLOGY/APPROACH

Semi-structured interviews were carried out with 26 TB volunteers, followed by volunteer discussion groups. Topics covered included: detailed accounts of the volunteers' many and varied roles; motivations - how they initially became involved and why they continue to be involved; incentives for volunteering; problems they have encountered; family and friends' attitudes to their volunteering, and the future of TB volunteering.

FINDINGS

The findings show that the TB volunteers are involved in many important roles. Volunteers initially became involved, having been asked or informed about the programme by area committee members, staff or friends. Most were also involved in other voluntary work.

ORIGINALITY/VALUE

This paper gives recommendations for volunteer programmes in developing countries including: sustained communication and contact between volunteers and the organisation; volunteer programmes based in a centre with an established community focus; flexibility of time commitment; regular recruitment drives for volunteers from different generations and status levels; and the use of training as a possible incentive for volunteering.

Treatment adherence among primary care patients in a historically disadvantaged community in South Africa: a qualitative study

The present study examined the issue of treatment adherence among a sample of 23 rural South African patients living with either hypertension or diabetes, or both. The sample was asked to participate in qualitative interviews that asked about various aspects of their experience of their illness and treatment. The analysis of the data focused on the content of participants' concerns and difficulties with adhering to treatment recommendations. The themes that emerged from the study were participants' attribution of the origin of their illness, their subjective experience of their illness, their concerns about the consequences of poor adherence, financial problems and psychosocial support.

Factors associated with tuberculosis treatment default and completion at the Effia-Nkwanta Regional Hospital in Ghana

The level of defaulting from treatment among tuberculosis (TB) patients at the Effia-Nkwanta Regional Hospital between January 2000 and December 2001 was 13.9%. This study was therefore designed to assess factors associated with TB treatment default and completion at the hospital. The initial part of the study consisted of three separate focus group discussions for health workers, defaulters and non-defaulters. The information collected was used to design a questionnaire that was administered to defaulters and non-defaulters selected from the Institutional TB Register. Univariate logistic regression analysis was performed to identify significant factors associated with treatment default. Statistical significance was taken as P < 0.05. Default from treatment was significantly associated with income per month (P = 0.03), ability to afford supplementary drugs (P = 0.008), availability of social support (P = 0.005) and problems relating with others while on treatment (P = 0.01). A cordial relationship between patients and health staff was the main motivating factor for completion of treatment, whilst financial difficulty was the main reason for defaulting from treatment. Determination of the characteristics found to be associated with defaulting in this study among TB patients at the start of treatment may be helpful in improving compliance among patients registered for treatment at the hospital.

A literature review of the problems of delayed presentation for treatment and non-completion of treatment for tuberculosis in less developed countries and ways of addressing these problems using particular implementations of the DOTS strategy

Tuberculosis is the cause of a large burden of disease in less developed countries. With the development of drug resistance and the co-epidemic of HIV, tuberculosis has already started to make a comeback in wealthier countries. The WHO's solution to this global tuberculosis epidemic is the DOTS strategy, the implementation of which presents many problems. The two issues most common to the majority of locations are delay in presentation for treatment and non-completion of treatment. This review looks at the reasons for these problems in the less developed world, and addresses some solutions. The main reasons for delayed presentation are: a lack of understanding about TB; the stigma associated with the disease; the inaccessibility of treatment; and a preference for private practitioners. The main reasons for non-completion of treatment are: the stigma of the disease; a lack of information; dissatisfaction with the treatment and its delivery; and inaccessibility of treatment. Successful implementations of the DOTS strategy need to address all these issues. There is little evidence that DOT enhances treatment completion unless combined with other strategies. Community-based, patient-orientated DOTS appears to be an appropriate way of addressing many of these issues. The involvement of volunteers in community-based strategies is common, but needs more research in order for this strategy to realise its full potential.

Improving the use of pharmaceuticals through patient and community level interventions

Pharmaceuticals represent an increasing share of private and public health care expenditures. However, while most governments are interested in ensuring availability and access to drugs, the issue of adequate use of drugs remains a low priority in most third world countries. This paper summarizes the results of interventions conducted in developing countries aimed at improving patients' compliance with the advice of health professionals and/or to decrease the unnecessary use of drugs by the general population. Forty-five studies were identified through literature searches and networking; and only about a third of them fulfilled the eligibility criteria for inclusion in the review. Given the paucity of information available and the importance of the topic the authors report on all 45 studies identified. Although much remains to be explored there are several interventions that deserve to be highlighted. The authors argue that improving the use of pharmaceuticals through interventions directed only to consumers may have a small impact and suggest that in order to obtain meaningful changes it might be necessary to design interventions to modify the behavior of all the actors in the medication cycle (manufacturers, health professionals, retailers, consumers and governments). They suggest that the extraordinary therapeutic effects of antibiotics, coupled with the problems that may arise when they are inappropriately used and with the extraordinary amount of resources spent on antibiotics worldwide justify a global effort to reduce their inappropriate use and promote their adequate administration. The complexity of this type of intervention would require the support of the pharmaceutical industry, governments, private foundations, and international organizations.

Directly observed therapy and treatment adherence

Direct observation of patients taking their medication is a strategy to improve completion rates for tuberculosis treatment, but the programmes to implement this approach consist of a complex array of inputs aimed at influencing adherence. Policy makers need a clear understanding of these inputs to succeed. We systematically identified and reviewed published reports of direct observation therapy (DOT) programmes and compared inputs with WHO's short-course DOT programme. DOT programmes frequently consist of more than the five elements of WHO's strategy, including incentives, tracing of defaulters, legal sanctions, patient-centred approaches, staff motivation, supervision, and additional external funds. Focusing on direct observation as a key factor in the promotion of adherence seems inappropriate. Multiple components might account for the success of DOT programmes, and WHO should make these explicit.

Tuberculosis in the community: 2. The perceptions of members of a tuberculosis health team towards a voluntary health worker programme

SETTING

A voluntary community health worker programme, in the Western Cape, South Africa, utilizing volunteers to administer directly observed therapy to tuberculosis (TB) patients.

OBJECTIVE

This study describes the perceptions of health team members regarding the voluntary community health worker project.

DESIGN

A qualitative, participatory research study utilizing focus groups.

RESULTS

TB was perceived by the health team to be a stigmatized disease causing some patients to be reluctant to be associated with the TB control programme. Despite the project's dedicated approach to case-holding, volunteers expressed the need to develop skills in providing more comprehensive care. The volunteers appear to administer a more personalized service to TB patients and can bridge the gap between TB patients and the health agency.

CONCLUSION

Sustained evaluation and support seem to be a vital tool in integrating a volunteer project into a health team approach. Its effectiveness appears to depend to a large degree on the people involved.