Effectiveness of the direct observation component of DOTS for tuberculosis: a randomised controlled trial in Pakistan

User engagement with and attitudes towards an interactive SMS reminder system for patients with tuberculosis

We conducted a qualitative study to understand user perceptions, acceptability and engagement with an interactive SMS reminder system designed to improve treatment adherence for patients with tuberculosis (TB). Patients received daily reminders and were asked to respond after taking their medication. Non-responsive patients were sent up to three reminders a day. We enrolled 30 patients with TB who had access to a mobile phone and observed their engagement with the system for a one-month period. We also conducted semi-structured interviews with 24 patients to understand their experience with the system. Most patients found the reminders helpful and encouraging. The average response rate over the study period was 57%. However, it fell from a mean response rate of 62% during the first ten days to 49% during the last ten days. Response rates were higher amongst females, participants with some schooling, and participants who had sent an SMS message the week prior to enrolment. Non-responsiveness was associated with a lack of access to the owner of the mobile phone, problems with the mobile phone itself and literacy. Our pilot study suggests that interactive SMS reminders are an acceptable and appreciated method of supporting patients with TB in taking their medication.

Cost-effectiveness of various tuberculosis control strategies in Thailand

OBJECTIVE

To evaluate the cost-effectiveness of different tuberculosis control strategies in Thailand.

METHODS

Different tuberculosis control strategies, which included health-worker, community-member, and family-member directly observed treatment (DOT) and a mobile phone "contact-reminder" system, were compared with self-administered treatment (SAT). Cost-effectiveness analysis was undertaken by using a decision tree model. Costs (2005 international dollars [I$]) were calculated on the basis of treatment periods and treatment outcomes. Health outcomes were estimated over the lifetime of smear-positive pulmonary tuberculosis patients in disability-adjusted life years (DALYs) averted on the basis of Thai evidence on the efficacy of the selected strategies.

RESULTS

Cost-effectiveness results indicate no preference for any strategy. The uncertainty ranges surrounding the health benefits were wide, including a sizeable probability that SAT could lead to more health gain than DOT strategies. The health gain for family-member DOT was 9400 DALYs (95% uncertainty interval -7200 to 25,000), for community-member DOT was 13,000 DALYs (95% uncertainty interval -21,000 to 37,000), and for health-worker DOT was 7900 DALYs (95% uncertainty interval -50,000 to 43,000). There were cost savings (from less multi-drug resistant tuberculosis treatment) associated with family-member DOT (-I$9 million [95% uncertainty interval -I$12 million to -I$5 million]) because the trial treatment failure rate was significantly lower than that for SAT. The mobile phone reminder system was not cost-effective, because the mortality rate associated with it was much higher than that associated with other treatment strategies.

CONCLUSIONS

Because of the large uncertainty intervals around health gain for DOT strategies, it remains inconclusive whether DOT strategies are more cost-effective than SAT. It is evident, however, that family-member DOT is a cost-saving intervention.

Strategies to Promote Adherence to Treatment by Pulmonary Tuberculosis Patients: A systematic review

BACKGROUND

Successful tuberculosis control depends upon effective treatment of patients which requires adherence throughout the full course of medical treatment. Poor adherence to treatment is a major obstacle in the global fight against tuberculosis. Therefore, interventions that promote adherence to the tuberculosis treatment regimen should be implemented.

OBJECTIVE

To review and synthesise the best available research evidence that investigates the effectiveness of strategies to promote adherence to treatment by patients with pulmonary tuberculosis.

INCLUSION CRITERIA

This review considered all studies that included adults aged ≥ 15 years diagnosed with smear positive and smear negative pulmonary tuberculosis (regardless of HIV infection) in community settings who had never received anti-tuberculosis drugs, or had taken them for less than one month.Intervention included strategies to promote adherence to tuberculosis treatment by patients with pulmonary tuberculosis.Outcomes included measures for treatment completion rate, cure rate, and success rate.The review primarily considered any randomised controlled trials that explored different strategies to promote adherence to tuberculosis treatment of patients with pulmonary tuberculosis but also included quasi-experimental studies.

SEARCH STRATEGY

The search sought to find published and unpublished studies. The time period of the search covered articles published from 1990 to 2010 in English and Thai language. The database searches included: CINAHL, EMBASE, Cochrane Library, PubMed, Science Direct, Current Content Connect, Thai Nursing Research Database, Thai thesis database, Digital Library of Thailand Research Fund, Research of National Research Council of Thailand, and Database of Office of Higher Education Commission. Studies were additionally identified from reference lists of all studies retrieved.

METHODOLOGICAL QUALITY

Studies selected for retrieval were assessed by two independent reviewers for methodological quality using a standardised critical appraisal tool from the Joanna Briggs Institute.

DATA COLLECTION

Data extraction was performed using a standardised data extraction form from the Joanna Briggs Institute.

DATA SYNTHESIS

The quantitative study results were pooled in statistical meta-analysis using the Review Manager software (RevMan 5.0) and summarised in narrative form where statistical pooling was not appropriate or possible.

RESULTS

This systematic review included ten randomised controlled trials and eight quasi-experimental studies that report on the effectiveness of a number of specific interventions to improve adherence to tuberculosis treatment among newly diagnosed pulmonary tuberculosis patients. These interventions included Directly Observed Treatment coupled with alternative patient supervision options, case management with Directly Observed Treatment, Short-course, the intensive triad-model program, and an intervention package consisting of improving patients' counselling and communication, decentralisation of treatment, patient choice of Directly Observed Treatment supporter, and reinforcement of supervision activities.

CONCLUSION

The interventions that had the best outcomes for treatment adherence among newly diagnosed pulmonary tuberculosis patients were Directly Observed Treatment and Directly Observed Treatment, Short-course combined with case management, improving counselling and communication and decentralisation of treatment. These interventions should be implemented by health care providers and tailored to local contexts and circumstances, where appropriate.It would be beneficial to shift the treatment of all pulmonary tuberculosis patients to facilities within the primary health care structure. Directly Observed Treatment coupled with alternative patient supervision options, formalised educational programs and a tuberculosis case management team should be used to improve adherence to tuberculosis treatment among newly diagnosed pulmonary tuberculosis patients.Our review shows the need for further large-scale on adherence to treatment by newly diagnosed pulmonary tuberculosis patients. Factors that determine the usefulness of Directly Observed Treatment in various settings require further study. Further strategies, especially those that are feasible in developing countries or countries with limited resources, should be evaluated in randomised controlled trials before being introduced into routine practice.

Cost-effectiveness of community health worker versus home-based guardians for directly observed treatment of tuberculosis in Vitória, Espírito Santo State, Brazil

The objective of this study was to compare the costs and outcomes associated with guardian-supervised directly observed treatment relative to the standard of care Directly Observed Therapy, Short Course (DOTS) provided by community health workers (CHW). New cases of culture-positive pulmonary tuberculosis (TB) treated in Vitória, Espírito Santo State, Brazil, between January 2005 and December 2006 were interviewed and chose their preferred treatment strategy. Costs incurred by providers and patients (and patients' families) were estimated, and cost-effectiveness was assessed by comparing costs per successfully treated patient. 130 patients were included in the study; 84 chose CHW-supervised DOTS and 46 chose guardian-supervised DOTS. 45 of 46 (98%) patients treated with guardian-supervised DOTS were cured or completed treatment compared to 70/84 (83%) of the CHW-supervised patients (p = 0.01). Logistic regression showed only the strategy of supervision to be a significant association with treatment outcome, with guardian-supervised care strongly protective. Cost per patient treated with guardian-supervised DOTS was US$398, compared to US$548 for CHW-supervised DOTS. The guardian-supervised DOTS is an attractive option to complement CHW-supervised DOTS.

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.

A Qualitative Study of HIV Treatment Adherence Support From Friends and Family among Same Sex Male Couples

HIV-positive individuals seek support for medication adherence from a variety of sources-spouses, family and friends. We conducted a qualitative study of twenty same sex male couples where we asked men to give narratives of support received for medication adherence from their partner, family and friends. Men in couple relationships did not routinely seek tangible or practical assistance for adherence from friends and family but almost exclusively from partners. These men did seek and receive informational and emotional support from friends and family. These results have implications for designing interventions for medication support when an individual is in a relationship.

Lay health workers in primary and community health care for maternal and child health and the management of infectious diseases

BACKGROUND

Lay health workers (LHWs) are widely used to provide care for a broad range of health issues. Little is known, however, about the effectiveness of LHW interventions.

OBJECTIVES

To assess the effects of LHW interventions in primary and community health care on maternal and child health and the management of infectious diseases.

SEARCH STRATEGY

For the current version of this review we searched The Cochrane Central Register of Controlled Trials (including citations uploaded from the EPOC and the CCRG registers) (The Cochrane Library 2009, Issue 1 Online) (searched 18 February 2009); MEDLINE, Ovid (1950 to February Week 1 2009) (searched 17 February 2009); MEDLINE In-Process & Other Non-Indexed Citations, Ovid (February 13 2009) (searched 17 February 2009); EMBASE, Ovid (1980 to 2009 Week 05) (searched 18 February 2009); AMED, Ovid (1985 to February 2009) (searched 19 February 2009); British Nursing Index and Archive, Ovid (1985 to February 2009) (searched 17 February 2009); CINAHL, Ebsco 1981 to present (searched 07 February 2010); POPLINE (searched 25 February 2009); WHOLIS (searched 16 April 2009); Science Citation Index and Social Sciences Citation Index (ISI Web of Science) (1975 to present) (searched 10 August 2006 and 10 February 2010). We also searched the reference lists of all included papers and relevant reviews, and contacted study authors and researchers in the field for additional papers.

SELECTION CRITERIA

Randomised controlled trials of any intervention delivered by LHWs (paid or voluntary) in primary or community health care and intended to improve maternal or child health or the management of infectious diseases. A 'lay health worker' was defined as any health worker carrying out functions related to healthcare delivery, trained in some way in the context of the intervention, and having no formal professional or paraprofessional certificate or tertiary education degree. There were no restrictions on care recipients.

DATA COLLECTION AND ANALYSIS

Two review authors independently extracted data using a standard form and assessed risk of bias. Studies that compared broadly similar types of interventions were grouped together. Where feasible, the study results were combined and an overall estimate of effect obtained.

MAIN RESULTS

Eighty-two studies met the inclusion criteria. These showed considerable diversity in the targeted health issue and the aims, content, and outcomes of interventions. The majority were conducted in high income countries (n = 55) but many of these focused on low income and minority populations. The diversity of included studies limited meta-analysis to outcomes for four study groups. These analyses found evidence of moderate quality of the effectiveness of LHWs in promoting immunisation childhood uptake (RR 1.22, 95% CI 1.10 to 1.37; P = 0.0004); promoting initiation of breastfeeding (RR = 1.36, 95% CI 1.14 to 1.61; P < 0.00001), any breastfeeding (RR 1.24, 95% CI 1.10 to 1.39; P = 0.0004), and exclusive breastfeeding (RR 2.78, 95% CI 1.74 to 4.44; P <0.0001); and improving pulmonary TB cure rates (RR 1.22 (95% CI 1.13 to 1.31) P <0.0001), when compared to usual care. There was moderate quality evidence that LHW support had little or no effect on TB preventive treatment completion (RR 1.00, 95% CI 0.92 to 1.09; P = 0.99). There was also low quality evidence that LHWs may reduce child morbidity (RR 0.86, 95% CI 0.75 to 0.99; P = 0.03) and child (RR 0.75, 95% CI 0.55 to 1.03; P = 0.07) and neonatal (RR 0.76, 95% CI 0.57 to 1.02; P = 0.07) mortality, and increase the likelihood of seeking care for childhood illness (RR 1.33, 95% CI 0.86 to 2.05; P = 0.20). For other health issues, the evidence is insufficient to draw conclusions regarding effectiveness, or to enable the identification of specific LHW training or intervention strategies likely to be most effective.

AUTHORS' CONCLUSIONS

LHWs provide promising benefits in promoting immunisation uptake and breastfeeding, improving TB treatment outcomes, and reducing child morbidity and mortality when compared to usual care. For other health issues, evidence is insufficient to draw conclusions about the effects of LHWs.

Patient-centred tuberculosis treatment delivery under programmatic conditions in Tanzania: a cohort study

BACKGROUND

Directly observed therapy (DOT) remains the cornerstone of the global tuberculosis (TB) control strategy. Tanzania, one of the 22 high-burden countries regarding TB, changed the first-line treatment regimen to contain rifampicin-containing fixed-dose combination for the full 6 months of treatment. As daily health facility-based DOT for this long period is not feasible for the patient, nor for the health system, Tanzania introduced patient centred treatment (PCT). PCT allows patients to choose for daily DOT at a health facility or at their home by a supporter of choice. The introduction of fixed dose combinations in the intensive and continuation phase made PCT feasible by eliminating the risk of selective drug taking by patients and reducing the number of tablets to be taken. The approach was tested in three districts with the objective to assess the effect of this strategy on TB treatment outcomes

METHODS

Cohort analysis comparing patients treated under the PCT strategy (registered April-September 2006) with patients treated under health-facility-based DOT (registered April-September 2005). The primary outcome was the cure rate. Differences were assessed by calculating the risk ratios. Associations between characteristics of the supporters and treatment outcomes in the group of patients opting for home-based DOT were assessed through logistic regression.

RESULTS

In the PCT cohort there were 1208 patients and 1417 were included in the historic cohort. There was no significant difference in cure rates between the cohorts (risk ratio [RR]: 1.06; 95% confidence interval [CI]: 0.96-1.16). In the PCT cohort, significantly more patients had successful treatment (cure or treatment completed; RR: 1.10; 95%CI: 1.01-1.15). There were no characteristics of supporters that were associated with treatment outcome.

CONCLUSION

The PCT approach showed similar cure rates and better treatment success rates compared to daily health-facility DOT. The results indicate that there are no specific prerequisites for the supporter chosen by the patient. The programmatic setting of the study lends strong support for scaling-up of TB treatment observation outside the health facility.

Why financial incentives did not reach the poor tuberculosis patients? A qualitative study of a Fidelis funded project in Shanxi, China

BACKGROUND

A project implemented in 50 counties of Shanxi province provided incentives to poor TB patients for their first trip to tuberculosis (TB) dispensaries. Incentives were also given to doctors for referring and supervising TB patients. A previous quantitative evaluation identified no improvement on TB case detection and management. This qualitative study was then conducted to explore reasons for project failure.

OBJECTIVE

To understand how the incentives were distributed to and viewed by their recipients and the implications for TB and health systems.

METHODS

Qualitative in-depth interviews were conducted with 32 TB patients, 13 village doctors, 12 village leaders, 8 TB doctors and 8 TB programme managers.

RESULTS

The study revealed a lack of operational tools on how to evaluate patients' economic status and how to publicise the incentives. As a result, patients did not know the level of incentives in advance and regarded the amount as inadequate. Patients faced a huge financial burden and a long delay in treating TB, dwarfing the benefits of travel incentives. The referral and case supervision incentives were not implemented. Doctors did not receive any referral and supervision incentives in addition to those already existing.

CONCLUSIONS

Strategies to address health system and TB programme issues should be implemented before or alongside financial incentives. Operational details and tools for any intervention should be developed, field-tested and revised prior to wide-scale use.

Adapting a generic tuberculosis control operational guideline and scaling it up in China: a qualitative case study

BACKGROUND

The TB operational guideline (the deskguide) is a detailed action guide for county TB doctors aiming to improve the quality of DOTS, while the China national TB policy guide is a guide to TB control that is comprehensive but lacks operational usability for frontline TB doctors. This study reports the process of deskguide adaptation, its scale-up and lessons learnt for policy implications.

METHODS

The deskguide was translated, reviewed, and revised in a working group process. Details of the eight adaptation steps are reported here. An operational study was embedded in the adaptation process. Two comparable prefectures were chosen as pilot and control sites in each of two participating provinces. In the pilot sites, the deskguide was used with the national policy guide in routine in-service training and supervisory trips; while in the control sites, only the national policy guide was used. In-depth interviews and focus groups were conducted with 16 county TB doctors, 16 township doctors, 17 village doctors, 63 TB patients and 57 patient family members. Following piloting, the deskguide was incorporated into the national TB guidelines for county TB dispensary use.

RESULTS

Qualitative research identified that the deskguide was useful in the daily practice of county TB doctors. Patients in the pilot sites had a better knowledge of TB and better treatment support compared with those in the control sites.

CONCLUSION

The adaptation process highlighted a number of general strategies to adapt generic guidelines into country specific ones: 1) local policy-makers and practitioners should have a leading role; 2) a systematic working process should be employed with capable focal persons; and 3) the guideline should be embedded within the current programmes so it is sustainable and replicable for further scale-up.

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.

Management of multidrug-resistant tuberculosis: Update 2007

Multidrug-resistant tuberculosis (MDR-TB) with bacillary resistance to at least isoniazid and rifampicin in vitro is a worldwide phenomenon. Hot spots of the disease are found scattered in different continents. Prevention of its development through good tuberculosis control programmes operating under the directly observed therapy, short-course (DOTS) strategy is of paramount importance. However, with established MDR-TB, treatment with alternative and specific chemotherapy is necessary to achieve a beneficial outcome. Such an approach on a programme basis is currently known as the 'DOTS-Plus' strategy. Second-line (reserve) drugs utilized in the treatment of MDR-TB are generally less potent and more toxic, perhaps with the notable exceptions of some fluoroquinolones and injectable agents. Surgery has a distinct adjunctive role for the management of MDR-TB in selected patients. The emergence of extensively drug-resistant tuberculosis (XDR-TB), that is, MDR-TB with additional bacillary resistance to the fluoroquinolones and injectables, has provided a very alarming challenge to global health, as the disease currently has a low cure rate and high mortality. In order to combat XDR-TB, strengthening of DOTS and DOTS-Plus programmes is mandatory, especially in the face of surging HIV infection. Furthermore, more attention needs to be focused on developing new drugs with potent bactericidal and sterilizing activities and low side-effects, and above all, drugs that are affordable for communities worldwide.

Interventions for enhancing medication adherence

BACKGROUND

People who are prescribed self-administered medications typically take less than half the prescribed doses. Efforts to assist patients with adherence to medications might improve the benefits of prescribed medications, but also might increase their adverse effects.

OBJECTIVES

To update a review summarizing the results of randomized controlled trials (RCTs) of interventions to help patients follow prescriptions for medications for medical problems, including mental disorders but not addictions.

SEARCH STRATEGY

We updated searches of The Cochrane Library, MEDLINE, CINAHL, EMBASE, International Pharmaceutical Abstracts (IPA), PsycINFO (all via OVID) and Sociological Abstracts (via CSA) in January 2007 with no language restriction. We also reviewed bibliographies in articles on patient adherence and articles in our personal collections, and contacted authors of relevant original and review articles.

SELECTION CRITERIA

Articles were selected if they reported an unconfounded RCT of an intervention to improve adherence with prescribed medications, measuring both medication adherence and treatment outcome, with at least 80% follow-up of each group studied and, for long-term treatments, at least six months follow-up for studies with positive initial findings.

DATA COLLECTION AND ANALYSIS

Study design features, interventions and controls, and results were extracted by one review author and confirmed by at least one other review author. We extracted adherence rates and their measures of variance for all methods of measuring adherence in each study, and all outcome rates and their measures of variance for each study group, as well as levels of statistical significance for differences between study groups, consulting authors and verifying or correcting analyses as needed. The studies differed widely according to medical condition, patient population, intervention, measures of adherence, and clinical outcomes. Therefore, we did not feel that quantitative analysis was scientifically justified; rather, we conducted a qualitative analysis.

MAIN RESULTS

For short-term treatments, four of ten interventions reported in nine RCTs showed an effect on both adherence and at least one clinical outcome, while one intervention reported in one RCT significantly improved patient adherence, but did not enhance the clinical outcome. For long-term treatments, 36 of 81 interventions reported in 69 RCTs were associated with improvements in adherence, but only 25 interventions led to improvement in at least one treatment outcome. Almost all of the interventions that were effective for long-term care were complex, including combinations of more convenient care, information, reminders, self-monitoring, reinforcement, counseling, family therapy, psychological therapy, crisis intervention, manual telephone follow-up, and supportive care. Even the most effective interventions did not lead to large improvements in adherence and treatment outcomes.

AUTHORS' CONCLUSIONS

For short-term treatments several quite simple interventions increased adherence and improved patient outcomes, but the effects were inconsistent from study to study with less than half of studies showing benefits. Current methods of improving adherence for chronic health problems are mostly complex and not very effective, so that the full benefits of treatment cannot be realized. High priority should be given to fundamental and applied research concerning innovations to assist patients to follow medication prescriptions for long-term medical disorders.

Has the DOTS strategy improved case finding or treatment success? An empirical assessment

BACKGROUND

Nearly fifteen years after the start of WHO's DOTS strategy, tuberculosis remains a major global health problem. Given the lack of empirical evidence that DOTS reduces tuberculosis burden, considerable debate has arisen about its place in the future of global tuberculosis control efforts. An independent evaluation of DOTS, one of the most widely-implemented and longest-running interventions in global health, is a prerequisite for meaningful improvements to tuberculosis control efforts, including WHO's new Stop TB Strategy. We investigate the impact of the expansion of the DOTS strategy on tuberculosis case finding and treatment success, using only empirical data.

METHODS AND FINDINGS

We study the effect of DOTS using time-series cross-sectional methods. We first estimate the impact of DOTS expansion on case detection, using reported case notification data and controlling for other determinants of change in notifications, including HIV prevalence, GDP, and country-specific effects. We then estimate the effect of DOTS expansion on treatment success. DOTS programme variables had no statistically significant impact on case detection in a wide range of models and specifications. DOTS population coverage had a significant effect on overall treatment success rates, such that countries with full DOTS coverage benefit from at least an 18% increase in treatment success (95% CI: 5-31%).

CONCLUSIONS

The DOTS technical package improved overall treatment success. By contrast, DOTS expansion had no effect on case detection. This finding is less optimistic than previous analyses. Better epidemiological and programme data would facilitate future monitoring and evaluation efforts.

Viewpoint: adapting to new international tuberculosis treatment standards with medication monitors and DOT given selectively

New international standards no longer require directly observed therapy for all tuberculosis (TB) patients, but state that practitioners must be capable of assessing adherence and addressing poor adherence. Mass-produced electronic medication monitors, which record removal of medication from a container, could help overcome the problem of assessing treatment adherence accurately even in poor countries. Both health facilities and community workers could dispense drugs for self-administered treatment in medication monitors and retrieve the adherence record with inexpensive built-in displays. These devices could keep the adherence record from the beginning of therapy for managing patients who move. Pharmacists using medication monitors could provide surveillance of self-administered treatment prescribed by private physicians with less adherent patients referred to the health departments. Less adherent patients could be managed with focused counselling, directly observed therapy when necessary, and extensions in treatment duration. Removal of the directly observed therapy burden would encourage patients to seek free high-quality supervised pubic care and help expand effective TB treatment services. If resources saved by giving less directly observed therapy were focused on poorly adherent patients, medication monitor-based programmes could create less acquired drug resistance than overwhelmed treatment programmes that attempt but fail to give uninterrupted directly observed therapy to all patients.

Directly observed therapy for treating tuberculosis

BACKGROUND

For tuberculosis treatment, policies have been introduced to encourage adherence to treatment regimens. One such policy is directly observed therapy (DOT), which involves people directly observing patients taking their antituberculous drugs.

OBJECTIVES

To compare DOT with self administration of treatment or different DOT options for people requiring treatment for clinically active tuberculosis or prevention of active disease.

SEARCH STRATEGY

In May 2007, we searched the Cochrane Infectious Diseases Group Specialized Register, CENTRAL (The Cochrane Library 2007, Issue 2), MEDLINE, EMBASE, LILACS, and mRCT. We also checked article reference lists and contacted relevant researchers and organizations.

SELECTION CRITERIA

Randomized and quasi-randomized controlled trials comparing a health worker, family member, or community volunteer routinely observing people taking antituberculous drugs compared with routine self administration of treatment at home. We include people requiring treatment for clinically active tuberculosis or medication for preventing active disease.

DATA COLLECTION AND ANALYSIS

Both authors independently assessed trial methodological quality and extracted data. Data were analysed using relative risks (RR) with 95% confidence intervals (CI) and the fixed-effect model when there was no statistically significant heterogeneity (chi square P > 0.1). Trials of drug users were analysed separately.

MAIN RESULTS

Eleven trials with 5609 participants met the inclusion criteria. No statistically significant difference was detected between DOT and self administration in terms of cure (RR 1.02, 95% CI 0.86 to 1.21, random-effects model; 1603 participants, 4 trials), with similar results for cure plus completion of treatment. When stratified by location, DOT provided at home compared with DOT provided at clinic suggests a possible small advantage with home-based DOT for cure (RR 1.10, 95% CI 1.02 to 1.18; 1365 participants, 3 trials). There was no significant difference detected in clinical outcomes between DOT at a clinic versus by a family member or community health worker (2 trials), or for DOT provided by a family member versus a community health worker (1326 participants, 1 trial). Two small trials of tuberculosis prophylaxis in intravenous drugs users found no statistically significant difference between DOT and self administration (199 participants, 1 trial) or a choice of location for DOT for completion of treatment (108 participants, 1 trial).

AUTHORS' CONCLUSIONS

The results of randomized controlled trials conducted in low-, middle-, and high-income countries provide no assurance that DOT compared with self administration of treatment has any quantitatively important effect on cure or treatment completion in people receiving treatment for tuberculosis.

Guía de práctica clínica de la Sociedad Andaluza de Enfermedades Infecciosas (SAEI) sobre el tratamiento de la tuberculosis

The therapeutic scheme for initial pulmonary tuberculosis recommended by the SAEI is as follows: Initial phase, isoniazid, rifampin and pyrazinamide given daily for 2 months. In HIV(+) patients and immigrants from areas with a rate of primary resistance to isoniazid > 4%, ethambutol should be added until susceptibility studies are available. Second phase (continuation phase): rifampin and isoniazid, given daily or intermittently for 4 months in the general population. HIV(+) patients (< or = 200 CD4) and culture-positive patients after 2 months of treatment should receive a 7-month continuation phase. A 6-month regimen is recommended for extrapulmonary tuberculosis, with the exception of tuberculous meningitis, which should be treated for a minimum of 12 months and bone/joint tuberculosis, treated for a minimum of 9 months. Treatment regimens for multidrug resistant tuberculosis are based on expert opinion. These would include a combination of still-useful first-line drugs, injectable agents, and alternative agents, such as quinolones. Patients who present a special risk of transmitting the disease or of non-adherence should be treated with directly observed therapy.

Review series: the politics of TB: the politics, economics and impact of directly observed treatment (DOT) in India

India harbors approximately one-third of the world's tuberculosis cases. The disease being multi-factorial; various political, social and economic factors play pivotal roles in causation and control. The country's policy-makers, via the Revised National Tuberculosis Programme (RNTCP), have embraced DOTS, i.e. Directly Observed Treatment; short course, as a means of combating the disease. Today, a decade after being launched, the DOTS programme in India is the largest in the world. The achievements of the programme have been significant in reaching out to the millions and having impressive cure rates, but the disease is far from eradicated. Social taboos, economic obstacles, and deficient infrastructure are impediments that hamper the success of the programme. With multidrug-resistant TB and HIV co-infection complicating the management of TB; the task has become more daunting. In a country as heterogeneous as India, novel holistic strategies that address individual needs will have to be developed to successfully curb the spread of the disease in the future.

Directly observed therapy and tuberculosis: how can a systematic review of qualitative research contribute to improving services? A qualitative meta-synthesis

AIM

This paper reports the findings from a qualitative meta-synthesis concerning people with, or at risk of, tuberculosis, service providers and policymakers and their experiences and perceptions of tuberculosis and treatment.

BACKGROUND

Directly observed therapy is part of a package of interventions to improve tuberculosis treatment and adherence. A Cochrane systematic review of trials showed an absence of evidence for or against directly observed therapy compared with people treating themselves.

METHOD

Qualitative systematic review methods were used to search, screen, appraise and extract data thematic analysis was used to synthesize data from 1990 to 2002, and an update of literature to December 2005. Two questions were addressed: 'What does qualitative research tell us about the facilitators and barriers to accessing and complying with tuberculosis treatment?' and 'What does qualitative research tell us about the diverse results and effect sizes of the randomized controlled trials included in the Cochrane review?' Findings help explain the diverse trial results in a Cochrane systematic review of directly observed therapy and tuberculosis and consider implications for research, policy and practice.

FINDINGS

Five themes emerged from the 1990 to 2002 synthesis: socio-economic circumstances, material resources and individual agency; explanatory models and knowledge systems in relation to tuberculosis and its treatment; the experience of stigma and public discourses around tuberculosis; sanctions, incentives and support, and the social organization and social relationships of care. Two additional themes emerged from the 2005 update.

CONCLUSION

The qualitative meta-synthesis improved the relevance and scope of the Cochrane review of trials. The findings make a major contribution to the development of theory concerning global WHO-branded disease control and the practicality of local delivery to people.

Determinants of treatment adherence among smear-positive pulmonary tuberculosis patients in Southern Ethiopia

BACKGROUND

Defaulting from treatment remains a challenge for most tuberculosis control programmes. It may increase the risk of drug resistance, relapse, death, and prolonged infectiousness. The aim of this study was to determine factors predicting treatment adherence among smear-positive pulmonary tuberculosis patients.

METHODS AND FINDINGS

A cohort of smear-positive tuberculosis patients diagnosed and registered in Hossana Hospital in southern Ethiopia from 1 September 2002 to 30 April 2004 were prospectively included. Using a structured questionnaire, potential predictor factors for defaulting from treatment were recorded at the beginning of treatment, and patients were followed up until the end of treatment. Default incidence rate was calculated and compared among preregistered risk factors. Of the 404 patients registered for treatment, 81 (20%) defaulted from treatment. A total of 91% (74 of 81) of treatment interruptions occurred during the continuation phase of treatment. On a Cox regression model, distance from home to treatment centre (hazard ratio [HR] = 2.97; p < 0.001), age > 25 y (HR = 1.71; p = 0.02), and necessity to use public transport to get to a treatment centre (HR = 1.59; p = 0.06) were found to be independently associated with defaulting from treatment.

CONCLUSIONS

Defaulting due to treatment noncompletion in this study setting is high, and the main determinants appear to be factors related to physical access to a treatment centre. The continuation phase of treatment is the most crucial time for treatment interruption, and future interventions should take this factor into consideration.

Évaluation de la prise en charge en pneumologie: tuberculose

INTRODUCTION

The management of patients affected by tuberculosis raises issues including epidemiology, the identification and treatment of disease or infection, infection control measures, BCG vaccination and national and international strategies against the disease.

STATE OF THE ART

BCG vaccination is controversial because of its undesirable effects and the conflicting evidence from trials. It provides partial but undeniable protection; 50% against all forms and 80% against the most severe forms, particularly in children. Vaccination strategies (generalised, selective or not at all) provide different cost/benefits depending on the population involved and its prior vaccination history. This variation in response does not outweigh the ethical and pragmatic considerations underlying the current approach of universal vaccination. The directly observed therapy, short course (DOTS) strategy has been well evaluated notwithstanding the huge potential scope of its global implementation.

PERSPECTIVES

A more effective vaccine is one of the possible solutions for eliminating tuberculosis. DOTS could be usefully implemented in France as part of a strategy to eliminate the disease.

CONCLUSION

BCG vaccination and elements of DOTS are effective interventions for the management of TB.

Effect of a hospital-based case management approach on treatment outcome of patients with tuberculosis

BACKGROUND/PURPOSE

Tuberculosis (TB) continues to pose a heavy public health burden in Taiwan. This prospective study analyzed the factors influencing treatment outcome in patients with TB treated with and without a hospital-based case management (HBCM) approach in a referral center in Taipei.

METHODS

A register-based cohort study design was used to enroll all new cases of pulmonary or extrapulmonary TB from February 2003 to January 2004. The case manager served as the coordinator among patients, physicians and public health nurses, to facilitate compliance with anti-TB treatment. Treatment outcomes were assessed according to the consensus recommendations of the World Health Organization and the International Union Against Tuberculosis and Lung Disease.

RESULTS

Suspected or confirmed pulmonary or extrapulmonary TB was diagnosed in 524 patients in our hospital from February 2003 to January 2004. Fifty-two of these patients were excluded due to duplicate reporting, previous treatment or death before enrollment. Out of 472 patients enrolled, 103 whose original diagnosis was revised were further excluded, leaving 369 cases eligible for analysis. Patients with case management had a significantly higher rate of successful treatment (cured plus completed treatment) compared to patients without case management, (240/277, 86.6% vs. 67/92, 72.8%; p = 0.002). The overall successful treatment rate including both case and non-case management was 83.2% (307/369), which was higher than the nationwide surveillance data of 78.3% in 2002 and 69.4% in 2003.

CONCLUSION

Treatment of TB patients by a HBCM approach provides improved treatment outcomes compared to those without case management.

The impact of physician training and experience on the survival of patients with active tuberculosis

BACKGROUND

Physician training and experience may be important factors influencing treatment outcomes of patients with tuberculosis. We conducted an analysis to evaluate physician and patient characteristics and their association with the rate of death among tuberculosis patients.

METHODS

We retrospectively reviewed all reported cases of active tuberculosis in Toronto between July 1, 1999, and June 30, 2002. We obtained extensive clinical data on cases as well as information on the training and clinical experience of treating physicians. We subsequently identified factors associated with patient mortality in a survival analysis.

RESULTS

In a multivariable Cox regression analysis involving 1154 patients, factors associated with all-cause mortality included patient age (in years) (hazard ratio [HR] 1.05, 95% confidence interval [CI] 1.04-1.07, p < 0.001), use of directly observed therapy (HR 0.22, CI 0.13-0.39, p < 0.001), receipt of care from a physician experienced with tuberculosis (per case managed per year) (HR 0.98, CI 0.97-0.99; p = 0.01) and admission to hospital during the course of treatment (HR 15.44, CI 7.06-33.76, p < 0.001). Factors that were not associated with patient survival included whether the physician graduated from a foreign medical school, the physician's medical specialty and the number of years in clinical practice.

INTERPRETATION

Physician experience with tuberculosis and use of directly observed therapy positively influenced the survival of patients with active tuberculosis in our setting.

[Directly observed therapy (DOT): from tuberculosis to HIV]

BACKGROUND

Combination antiretroviral therapy, which is the standard of care since 1996, has been demonstrated to be very effective in suppressing plasma viral load in patients infected with HIV. Optimal benefit from antiretroviral drugs, however, is obtained when the patient adheres strictly to the rigorous treatment regimen. For some patients it is difficult to obtain good adherence to antiretroviral regimens. In response to these concerns, different strategies, such as directly observed therapy, have been proposed to attempt to improve adherence to antiretroviral treatment. Directly observed therapy is a strategy that has its roots in the treatment of tuberculosis and it consists essentially of taking the medication in the presence of a health care provider or another designated person. This strategy has been recently tried in the treatment of HIV but its efficacy remains unknown.

METHOD

A Medline and Medscape search was performed to review all pertinent publications on the use of directly observed therapy in HIV infection.

RESULTS

Twenty-five papers published between 1996 and 2004 were selected. Almost all the studies were performed in industrialized countries in North America and Europe. The majority of the studies are retrospective, six of them comparing at least two strategies (directly observed therapy vs standard of care). Only one randomized trial has been found. The patients involved in the studies are intravenous drug users or particularly non-adherent patients. Almost all studies show a better rate of adherence or a better control of the viremia in patients on directly observed therapy.

CONCLUSIONS

The directly observed therapy seems to be a valuable and feasible way to raise the adherence rate in HIV patients with a problem of non-adherence to antiretroviral treatments. Clinical trials are needed to evaluate the efficacy of this strategy to raise the adherence rate among patients who need additional support to take their antiretrovirals.

Directly observed therapy for treating tuberculosis

BACKGROUND

People with tuberculosis require treatment for at least six months. As many patients do not complete their treatment, policies have been introduced to encourage adherence to treatment regimens. One such policy is directly observed therapy, which involves people directly observing patients taking their antituberculous drugs.

OBJECTIVES

To compare directly observed therapy (DOT) with self administration of treatment in people requiring treatment for clinically active tuberculosis or prevention of active disease.

SEARCH STRATEGY

We searched the Cochrane Infectious Diseases Group Specialized Register (November 2005), CENTRAL (The Cochrane Library 2005, Issue 4), MEDLINE (1966 to November 2005), EMBASE (1974 to November 2005), LILACS (1982 to November 2005), and reference lists of articles. We also contacted researchers and organizations working in the field.

SELECTION CRITERIA

Randomized and quasi-randomized controlled trials comparing a health worker, family member, or community volunteer routinely observing people taking antituberculous drugs compared with routine self administration of treatment at home. We include patients requiring treatment for clinically active tuberculosis or medication for preventing active disease.

DATA COLLECTION AND ANALYSIS

Both authors independently assessed trial methodological quality and extracted data. Data were analysed using relative risks (RR) with 95% confidence intervals (CI) and the fixed-effect model when there was no statistically significant heterogeneity (chi square P > 0.1). Trials of drug users were analysed separately.

MAIN RESULTS

Ten trials with 3985 participants met the inclusion criteria. There was no statistically significant difference between DOT and self administration of treatment for the number of people cured (RR 1.02, 95% CI 0.86 to 1.21, random-effects model; 1603 participants, 4 trials) or who were cured or completed treatment (RR 1.06, 95% CI 1.00 to 1.13; 1603 participants, 4 trials). Stratifying the location of the DOT by home or at a clinic suggests a possible small effect with home-based DOT (RR 1.10, 95% CI 1.02 to 1.18; 1365 participants, 3 trials). Two small trials of tuberculosis prophylaxis in intravenous drugs users found no statistically significant difference between DOT and self administration (199 participants, 1 trial), or a choice of location for DOT for completion of treatment (108 participants, 1 trial).

AUTHORS' CONCLUSIONS

The results of randomized controlled trials conducted in low-, middle-, and high-income countries provide no assurance that directly observed therapy compared with self-administered treatment has any quantitatively important effect on cure or treatment completion in people receiving treatment for tuberculosis.

Family-member DOTS and community DOTS for tuberculosis control in Nepal: cluster-randomised controlled trial

BACKGROUND

A key component of the DOTS strategy for tuberculosis control (short-course chemotherapy following WHO guidelines) is direct observation of treatment. WHO technical guidelines recommend that health workers should undertake this part of the strategy, but will also accept direct observation of treatment in the community; WHO does not think that a family member should undertake this role. Supporting evidence for these recommendations is not available. The Nepal national tuberculosis programme asked us to develop and test a strategy of direct observation of treatment for the hill districts of Nepal, where direct observation of treatment by health workers is not feasible. We aimed to assess the success rates of two DOTS strategies developed for such areas.

METHODS

Between mid-July, 2002, and mid-July, 2003, we undertook a cluster-randomised controlled trial to compare two strategies-community DOTS and family-member DOTS--in ten hill and mountain districts of Nepal. Districts were used as the unit of randomisation. Primary outcome was success rate (proportion of registered patients who achieved cure or completed treatment), and analysis was by intention to treat.

FINDINGS

Five districts (549 patients) were allocated to community DOTS and five (358 patients) were allocated family-member DOTS. Community DOTS and family-member DOTS achieved success rates of 85% and 89%, respectively (odds ratio of success for community DOTS relative to family-member DOTS, 0.67 [95% CI 0.41-1.10]; p=0.09). Estimated case-finding rates were 63% with the community strategy and 44% with family-member DOTS.

INTERPRETATION

The family-member DOTS and community DOTS strategies can both attain international targets for treatment success under programme conditions, and thus are appropriate for the hill and mountain districts of Nepal. Both strategies might also be appropriate in other parts of the world where directly observed treatment by health workers is not feasible. Our findings lend support to adoption of this patient-responsive approach to direct observation of treatment within global tuberculosis control policy.

Interventions to enhance medication adherence

BACKGROUND

People who are prescribed self-administered medications typically take less than half the prescribed doses. Efforts to assist patients with adherence to medications might improve the benefits of prescribed medications, but also might increase their adverse effects.

OBJECTIVES

To update a review summarizing the results of randomized controlled trials (RCTs) of interventions to help patients follow prescriptions for medications for medical problems, including mental disorders but not addictions.

SEARCH STRATEGY

Computerized searches were updated to September 2004 without language restriction in MEDLINE, EMBASE, CINAHL, The Cochrane Library, International Pharmaceutical Abstracts (IPA), PsycINFO and SOCIOFILE. We also reviewed bibliographies in articles on patient adherence and articles in our personal collections, and contacted authors of original and review articles on the topic.

SELECTION CRITERIA

Articles were selected if they reported an unconfounded RCT of an intervention to improve adherence with prescribed medications, measuring both medication adherence and treatment outcome, with at least 80% follow-up of each group studied and, for long-term treatments, at least six months follow-up for studies with positive initial findings.

DATA COLLECTION AND ANALYSIS

Study design features, interventions and controls, and results were extracted by one reviewer and confirmed by at least one other reviewer. We extracted adherence rates and their measures of variance for all methods of measuring adherence in each study, and all outcome rates and their measures of variance for each study group, as well as levels of statistical significance for differences between study groups, consulting authors and verifying or correcting analyses as needed.

MAIN RESULTS

For short-term treatments, four of nine interventions reported in eight RCTs showed an effect on both adherence and at least one clinical outcome, while one intervention reported in one RCT significantly improved patient compliance, but did not enhance the clinical outcome. For long-term treatments, 26 of 58 interventions reported in 49 RCTs were associated with improvements in adherence, but only 18 interventions led to improvement in at least one treatment outcome. Almost all of the interventions that were effective for long-term care were complex, including combinations of more convenient care, information, reminders, self-monitoring, reinforcement, counseling, family therapy, psychological therapy, crisis intervention, manual telephone follow-up, and supportive care. Even the most effective interventions did not lead to large improvements in adherence and treatment outcomes. Six studies showed that telling patients about adverse effects of treatment did not affect their adherence.

AUTHORS' CONCLUSIONS

Improving short-term adherence is relatively successful with a variety of simple interventions. Current methods of improving adherence for chronic health problems are mostly complex and not very effective, so that the full benefits of treatment cannot be realized. High priority should be given to fundamental and applied research concerning innovations to assist patients to follow medication prescriptions for long-term medical disorders.

Listening to those on the frontline: Lessons for community-based tuberculosis programmes from a qualitative study in Swaziland

This study explored the experience of people involved in a new community-based tuberculosis (TB) programme in rural Swaziland. Patients have their treatment observed in the community after choosing a treatment supporter (either community health worker or family member) in dialogue with the TB nurse. Interviews were conducted with TB patients, treatment supporters, clinic nurses, nurses working in the hospital-based TB team and medical staff. The study generated two main themes: (1) issues relating to the TB programme and (2) wider societal issues. Both are important, however this paper reports only the issues directly related to the TB programme. The study found that community-based care is preferred to hospital care, which should be retained only for the very ill patients. The importance of selecting suitable patients and ensuring individualised and flexible arrangements was highlighted. Although treatment outcomes are known to have improved since introducing the new TB programme a number of issues require further attention. Communication between different levels of the health service needs to be improved and consultation communication skills, taught prior to introducing the programme, need to be refreshed. All relevant staff must be trained on the TB programme and patient education (on TB, HIV and treatment adherence) needs to be reinforced throughout TB treatment. Health education of the wider community is also needed. Ongoing support of treatment supporters must recognise that their role is not simply treatment observation. In this context, where the large majority of TB patients are HIV positive, better co-ordination with the HIV/AIDS services is required, including treatment of other HIV-related infections and home-based care for TB patients who deteriorate. Although the findings and recommendations of this study are context specific they are likely to be of relevance to other programmes.

Tuberculosis patient adherence to direct observation: results of a social study in Pakistan

A randomized controlled trial was carried out in Pakistan in 1999 to establish the effectiveness of the direct observation component of DOTS programmes. It found no significant differences in cure rates for patients directly observed by health facility workers, community health workers or by family members, as compared with the control group who had self-administered treatment. This paper reports on the social studies which were carried out during and after this trial, to explain these results. They consisted of a survey of all patients (64% response rate); in-depth interviews with a smaller sample of different types of patients; and focus group discussions with patients and providers. One finding was that of the 32 in-depth interview patients, 13 (mainly from the health facility observation group) failed to comply with their allocated DOT approach during the trial, citing the inconvenience of the method of observation. Another finding was that while patients found the overall TB care approach efficient and economical in general, they faced numerous barriers to regular attendance for the direct observation of drug-taking (most especially, time, travel costs, ill health and need to pursue their occupation). This may be one of the reasons why there was no overall benefit from direct observation in the trial. Provider attitudes were also poor: health facility workers expressed cynical and uncaring views; community health workers were more positive, but still arranged direct observation to suit their, rather than patients', schedules. The article concludes that direct observation, if used, should be flexible and convenient, whether at a health facility close to the patient's home or in the community. The emphasis should shift in practice from tablet watching towards treatment support, together with education and other adherence measures.

DOTS improves treatment outcomes and service coverage for tuberculosis in South Ethiopia: a retrospective trend analysis

Background

DOTS as a strategy was introduced to the tuberculosis control programme in Southern region of Ethiopia in 1996. The impact of the programme on treatment outcomes and the trend in the service coverage for tuberculosis has not been assessed ever since. The aim of the study was to assess trends in the expansion of DOTS and treatment outcomes for tuberculosis in Hadiya zone in Southern Ethiopia.

Methods

19,971 tuberculosis patients registered for treatment in 41 treatment centres in Hadiya zone between 1994 and 2001 were included in the study. The data were collected from the unit tuberculosis registers. For each patient, we recorded information on demographic characteristics, treatment centre, year of treatment, disease category, treatment given, follow-up and treatment outcomes. We also checked the year when DOTS was introduced to the treatment centre.

Results

Population coverage by DOTS reached 75% in 2001, and the proportion of patients treated with short course chemotherapy increased from 7% in 1994 to 97% in 2001. Treatment success for smear-positive tuberculosis rose from 38% to 73% in 2000, default rate declined from 38% to 18%, and treatment failure declined from 5% to 1%. Being female patient, age 15–24 years, smear positive pulmonary tuberculosis, treatment with short course chemotherapy, and treatment at peripheral centres were associated with higher treatment success and lower defaulter rates.

Conclusion

The introduction and expansion of DOTS in Hadiya has led to a significant increase in treatment success and decrease in default and failure rates. The smaller institutions exhibited better treatment outcomes compared to the larger ones including the zonal hospital. We identified many patients with missing information in the unit registers and this issue needs to be addressed. Further studies are recommended to see the impact of the programme on the prevalence and incidence of tuberculosis.

Antiretroviral treatment in resource-poor settings: public health research priorities

Many countries in Africa are planning to provide highly active antiretroviral therapy (HAART) to millions of people with acquired immune deficiency syndrome. This will be a highly complex therapy programme. Physician-based models of care adapted from industrialized countries will not succeed in providing treatment to the majority of those who need it in resource-constrained settings. A high priority is to identify care models for Africa that will increase coverage of HAART safely and effectively: key issues are (i) whether nursing staff or non-clinically qualified staff can take the major role in the treatment programme and reduce the workload of physicians, (ii) whether treatment and monitoring can be delivered through peripheral health centres or through home visits and achieve better adherence and be more cost-effective than delivery at hospitals and (iii) which clinical algorithms used by nursing or non-clinically qualified staff will be effective for screening, diagnosing and managing treatment-related side-effects and medical problems being incurred. Many current ART support programmes are making little or no investment in research, but answering important questions on delivery of HAART will be essential if HAART programmes are to be successful in African nations with a high burden of human immunodeficiency virus infection.

New York University Medical Center's pilot "Epo-Depot" program: a win-win for patients and health care

Therapy associated with treatment-related anemia continues to be of great concern for health care providers. Patient satisfaction, patient adherence, and growing insurance reimbursement concerns related to Epoetin alpha therapy for anemia initiated the development of a nursing-led process improvement team at New York University (NYU) Medical Center. Multiple patient groups were identified and treated for anemia with Epoetin alpha through the guide of a standardized pathway providing a convenient and effective treatment plan. The treatment delivery had to be consistent with institutional reimbursement requirements while avoiding significant cost to the patient. Patient populations diagnosed with HIV anemia, HIV oncology, presurgical anemia, and medically complex anemia can now receive appropriate ambulatory treatment. This article describes the formation of the "Epo-Depot" and the logistics involved to service these patients with anemia.

Tuberculosis Treatment Outcomes

Effective treatment of tuberculosis requires adherence to a minimum of 6 months treatment with multiple drugs. To improve adherence and cure rates, directly observed therapy is recommended for the treatment of pulmonary tuberculosis. We compared treatment outcomes among all culture-positive patients treated for active pulmonary tuberculosis (n = 372) in San Francisco County, California from 1998 through 2000. Patients treated by directly observed therapy at the start of therapy (n = 149) had a significantly higher cure rate compared with patients treated by self-administered therapy (n = 223) (the sum of bacteriologic cure and completion of treatment, 97.8% versus 88.6%, p < 0.002), and decreased tuberculosis-related mortality (0% vs. 5.5%, p = 0.002). Rates of treatment failure, relapse, and acquired drug resistance were similar between the two groups. Forty-four percent of patients who received self-administered therapy had risk factors for nonadherence and should have been assigned to directly observed therapy. We conclude that treatment plans that emphasize directly observed therapy from the start of therapy have the greatest success in improving tuberculosis treatment outcomes.

Tuberculosis control in resource-poor countries: have we reached the limits of the universal paradigm?

The aim of TB control is to break the cycle of transmission by treating TB cases as early and efficiently as possible. In its efforts to promote a model of worldwide TB control, WHO defined specific targets and launched the 'Directly Observed Therapy, Short-course' (DOTS) strategy as the main tool to reach them. However, the diversity of patients' attitudes towards the disease and the extreme variability of access to care, especially in resource-poor countries, are amongst the many factors of social context that profoundly affect the ability of control programmes to implement this policy effectively. There are multiple reports of TB control programmes using various types of intervention to promote adherence and enhance case-holding, but most of these interventions depend on external funding, which bring into question their long-term sustainability. In this paper, we address the problems related to operational variabilities in the implementation of the DOTS strategy in resource-poor countries and question the appropriateness of a universal paradigm for global TB control. This analysis is of particular importance as programmers consider using this model in the delivery of anti-retroviral therapies for the treatment of HIV in resource-limited settings.

Direct observation of treatment for tuberculosis: a randomized controlled trial of community health workers versus family members

We implemented community-based direct observation of treatment, short course (DOTS), including a randomized controlled trial of direct observation either by community health workers (CHWs) or family members, under operational conditions in a region of Swaziland. There was a high death rate of 15%, due to the high HIV rates in the region. There was no significant difference in the cure and completion rate between direct observation of treatment by CHWs and family members [2% difference (95% CI -3% to 7%), exact P = 0.52]. A before-and-after comparison of outcomes demonstrated that the cure and treatment completion rate improved from a baseline of 27-67% following implementation of community-based DOTS. We conclude that community-based tuberculosis DOTS can improve successful outcomes of treatment. However, direct observation can be undertaken effectively using either daily family or CHW supervision. The choice of treatment supporter should be based on access, patient preference and availability of CHW resource.

Utility of Tuberculosis Directly Observed Therapy Programs as Sites for Access to and Provision of Antiretroviral Therapy in Resource-Limited Countries

The overwhelming share of the global human immunodeficiency virus (HIV) infection and disease burden is borne by resource-limited countries. The explosive spread of HIV infection and growing burden of disease in these countries has intensified the need to find solutions to improved access to treatment for HIV infection. The epidemic of HIV infection and acquired immune deficiency syndrome (AIDS) has been accompanied by a severe epidemic of tuberculosis. Tuberculosis has become the major cause of morbidity and mortality in patients with HIV disease worldwide. Among the various models of provision of HIV/AIDS care, one logical but unexplored strategy is to integrate HIV/AIDS and tuberculosis care and treatment, including highly active antiretroviral therapy, through existing tuberculosis directly observed therapy programs. This strategy could address the related issues of inadequate access and infrastructure and need for enhanced adherence to medication and thereby potentially improve the outcome for both diseases.