The impact of a knowledge translation intervention employing educational outreach and a point-of-care reminder tool vs standard lay health worker training on tuberculosis treatment completion rates: study protocol for a cluster randomized controlled trial

Abstract Background: While lay-health worker models for mental health care have proven to be effective in controlled trials, there is limited evidence on the effectiveness and scalability of these models in rural communities in low- and middle-income countries (LMICs). Atmiyata is a rural community-led intervention using local community volunteers, called Champions, to identify and provide evidence-based counselling for persons with common mental disorders (CMD) as part of a package of community-based interventions for mental health. Methods: The impact of the Atmiyata intervention is evaluated through a stepped wedge cluster randomized controlled trial (SW-CRCT) with a nested economic evaluation. The trial spans across 10 sub-blocks (645 villages) in Mehsana district with 1.52 million rural adult population. There are 56Primary Health Centers (PHCs) in Mehsana district and villages covered under these PHCs are equally divided into four groups of clusters of 14 PHCs each, and the intervention is rolled out in a staggered manner in these groups of villages at an interval of 5 months. The primary outcome is symptomatic improvement measured through the GHQ-12 at 3-month follow-up. Secondary outcomes include: quality of life using the EURO-QoL (EQ- 5D), symptom improvement measured by the Self-Reporting Questionnaire-20 (SRQ-20), functioning using the WHO Disability Assessment Scale (WHO-DAS-12), depression symptoms using the Patient Health Questionnaire, (PHQ-9), anxiety symptoms using Generalized Anxiety Disorder Questionnaire, (GAD-7) and social participation using the Social Participation Scale (SPS). Generalized linear mixed effects model are employed for binary outcomes and linear mixed effects models for continuous outcomes. A Return on investment (ROI) analysis of the intervention will be conducted to understand whether the intervention generates any return on financial investments made into the project. Discussion: Stepped wedge designs are progressively being used to evaluate real-life effectiveness of interventions. To the best of our knowledge, this is the first SW-CRCT in a LMIC evaluating the impact of implementation of a psychosocial mental health intervention. The results of this study will contribute to the evidence on scaling-up lay health worker models for mental health interventions and contribute to the SW-CRCT literature in LMICs.

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Atmiyata, a community led intervention to address common mental disorders: Study protocol for a stepped wedge cluster randomized controlled trial in rural Gujarat, India

10.21203/rs.2.12186/v1 ◽

2019 ◽

Author(s):

Kaustubh Joag ◽

Jasmine Kalha ◽

Deepa Pandit ◽

Susmita Chatterjee ◽

Sadhvi Krishnamoorthy ◽

...

Keyword(s):

Mental Health ◽

Common Mental Disorders ◽

Controlled Trial ◽

Mixed Effects ◽

Stepped Wedge ◽

Linear Mixed Effects ◽

Lay Health Worker ◽

Randomized Controlled ◽

Cluster Randomized ◽

The Impact

Abstract Background While lay-health worker models for mental health care have proven to be effective in controlled trials, there is limited evidence on the effectiveness and scalability of these models in rural communities in low- and middle-income countries (LMICs). Atmiyata is a rural community-led intervention using local community volunteers, called Champions, to identify and provide evidence-based counselling for persons with common mental disorders (CMD) as part of a package of community-based interventions for mental health. Methods The impact of the Atmiyata intervention is evaluated through a stepped wedge cluster randomized controlled trial (SW-CRCT) with a nested economic evaluation. The trial spans across 10 sub-blocks (645 villages) in Mehsana district with 1.52 million rural adult population. 56 PHCs in Mehsana district are equally divided into four clusters of 14 PHCs each, and the intervention is rolled out in cluster in a staggered manner at an interval of 5 months. The primary outcome is symptomatic improvement measured through the GHQ-12 at 3-month follow-up. Secondary outcomes include: quality of life using the EURO-QoL (EQ- 5D), symptom improvement measured by the Self-reporting questionnaire-20 (SRQ-20), functioning using the WHO Disability Assessment Scale (WHO-DAS-12), depression symptoms (Patient Health Questionnaire, PHQ-9)) and anxiety symptoms (Generalized Anxiety Disorder Questionnaire, GAD-7) and social participation using the Social Participation Scale (SPS). Linear mixed effects models are employed for continuous outcomes and generalized linear mixed effects model for binary outcomes. Discussion Stepped wedge designs are progressively being used to evaluate real-life effectiveness of interventions. To the best of our knowledge, this is the first SW-CRCT in a LMIC evaluating the impact of the implementation of a mental health intervention. The results of this study will contribute to the evidence on scaling-up lay health worker models for mental health interventions and contribute to the SW-CRCT literature in LMICs.

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Reduced exposure to malaria vectors following indoor residual spraying of pirimiphos-methyl in a high-burden district of rural Mozambique with high ownership of long-lasting insecticidal nets: entomological surveillance results from a cluster-randomized trial

Malaria Journal ◽

10.1186/s12936-021-03583-8 ◽

2021 ◽

Vol 20 (1) ◽

Cited By ~ 1

Author(s):

Joseph M. Wagman ◽

Kenyssony Varela ◽

Rose Zulliger ◽

Abuchahama Saifodine ◽

Rodaly Muthoni ◽

...

Keyword(s):

Controlled Trial ◽

Indoor Residual Spraying ◽

Malaria Vectors ◽

Light Traps ◽

High Burden ◽

Randomized Controlled ◽

Pirimiphos Methyl ◽

Cluster Randomized ◽

The Impact ◽

Long Lasting Insecticidal Nets

Abstract Background The need to develop new products and novel approaches for malaria vector control is recognized as a global health priority. One approach to meeting this need has been the development of new products for indoor residual spraying (IRS) with novel active ingredients for public health. While initial results showing the impact of several of these next-generation IRS products have been encouraging, questions remain about how to best deploy them for maximum impact. To help address these questions, a 2-year cluster-randomized controlled trial to measure the impact of IRS with a microencapsulated formulation of pirimiphos-methyl (PM) in an area with high ownership of long-lasting insecticidal nets (LLINs) was conducted in a high-transmission district of central Mozambique with pyrethroid resistant vectors. Presented here are the results of the vector surveillance component of the trial. Methods The 2 year, two-armed trial was conducted in Mopeia District, Zambezia Province, Mozambique. In ten sentinel villages, five that received IRS with PM in October–November 2016 and again in October–November 2017 and five that received no IRS, indoor light trap collections and paired indoor-outdoor human landing collections catches (HLCs) were conducted monthly from September 2016 through October 2018. A universal coverage campaign in June 2017, just prior to the second spray round, distributed 131,540 standard alpha-cypermethrin LLINs across all study villages and increased overall net usage rates in children under 5 years old to over 90%. Results The primary malaria vector during the trial was Anopheles funestus sensu lato (s.l.), and standard World Health Organization (WHO) tube tests with this population indicated variable but increasing resistance to pyrethroids (including alpha-cypermethrin, from > 85% mortality in 2017 to 7% mortality in 2018) and uniform susceptibility to PM (100% mortality in both years). Over the entire duration of the study, IRS reduced An. funestus s.l. densities by 48% (CI95 33–59%; p < 0.001) in indoor light traps and by 74% (CI95 38–90%; p = 0.010) during indoor and outdoor HLC, though in each study year reductions in vector density were consistently greatest in those months immediately following the IRS campaigns and waned over time. Overall there was no strong preference for An. funestus to feed indoors or outdoors, and these biting behaviours did not differ significantly across study arms: observed indoor-outdoor biting ratios were 1.10 (CI95 1.00–1.21) in no-IRS villages and 0.88 (CI95 0.67–1.15) in IRS villages. The impact of IRS was consistent in reducing HLC exposures both indoors (75% reduction: CI95 47–88%; p = 0. < 0.001) and outdoors (68% reduction: CI95 22–87%; p = 0.012). While substantially fewer Anopheles gambiae s.l. were collected during the study, trends show a similar impact of IRS on this key vector group as well, with a 33% (CI95 7–53%; p = 0.019) reduction in mosquitoes collected in light traps and a non-statistically significant 39% reduction (p = 0.249) in HLC landing rates. Conclusion IRS with PM used in addition to pyrethroid-only LLINs substantially reduced human exposures to malaria vectors during both years of the cluster-randomized controlled trial in Mopeia—a high-burden district where the primary vector, An. funestus s.l., was equally likely to feed indoors or outdoors and demonstrated increasing resistance to pyrethroids. Findings suggest that IRS with PM can provide effective vector control, including in some settings where pyrethroid-only ITNs are widely used. Trial registrationclinicaltrials.gov, NCT02910934. Registered 22 September 2016, https://www.clinicaltrials.gov/ct2/show/NCT02910934.

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Frequency of repositioning for preventing pressure ulcers in patients hospitalized in ICU: protocol of a cluster randomized controlled trial

BMC Nursing ◽

10.1186/s12912-021-00616-0 ◽

2021 ◽

Vol 20 (1) ◽

Author(s):

Olga L. Cortés ◽

Mauricio Herrera-Galindo ◽

Juan Carlos Villar ◽

Yudi A. Rojas ◽

María del Pilar Paipa ◽

...

Keyword(s):

Randomized Controlled Trial ◽

Critical Care ◽

Pressure Ulcers ◽

Controlled Trial ◽

Cluster Randomized Controlled Trial ◽

Control Group ◽

Randomized Controlled ◽

Link Type ◽

Cluster Randomized ◽

The Impact

Abstract Background Despite being considered preventable, ulcers due to pressure affect between 30 and 50% of patients at high and very high risk and susceptibility, especially those hospitalized under critical care. Despite a lack of evidence over the efficacy in prevention against ulcers due to pressure, hourly repositioning in critical care as an intervention is used with more or less frequency to alleviate pressure on patients’ tissues. This brings up the objective of our study, which is to evaluate the efficacy in prevention of ulcers due to pressure acquired during hospitalization, specifically regarding two frequency levels of repositioning or manual posture switching in adults hospitalized in different intensive care units in different Colombian hospitals. Methods A nurse-applied cluster randomized controlled trial of parallel groups (two branches), in which 22 eligible ICUs (each consisting of 150 patients), will be randomized to a high-frequency level repositioning intervention or to a conventional care (control group). Patients will be followed until their exit from each cluster. The primary result of this study is originated by regarding pressure ulcers using clusters (number of first ulcers per patient, at the early stage of progression, first one acquired after admission for 1000 days). The secondary results include evaluating the risk index on the patients’ level (Hazard ratio, 95% IC) and a description of repositioning complications. Two interim analyses will be performed through the course of this study. A statistical difference between the groups < 0.05 in the main outcome, the progression of ulcers due to pressure (best or worst outcome in the experimental group), will determine whether the study should be put to a halt/determine the termination of the study. Conclusion This study is innovative in its use of clusters to advance knowledge of the impact of repositioning as a prevention strategy against the appearance of ulcers caused by pressure in critical care patients. The resulting recommendations of this study can be used for future clinical practice guidelines in prevention and safety for patients at risk. Trial registration PENFUP phase-2 was Registered in Clinicaltrials.gov (NCT04604665) in October 2020.

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Community intervention for child tuberculosis active contact investigation and management: study protocol for a parallel cluster randomized controlled trial

Trials ◽

10.1186/s13063-021-05124-9 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Anca Vasiliu ◽

Sabrina Eymard-Duvernay ◽

Boris Tchounga ◽

Daniel Atwine ◽

Elisabete de Carvalho ◽

...

Keyword(s):

Controlled Trial ◽

Standard Of Care ◽

Preventive Therapy ◽

Community Based ◽

Randomized Controlled ◽

Eligible Child ◽

Contact Investigation ◽

Cluster Randomized ◽

The Impact ◽

Index Cases

Abstract Background There are major gaps in the management of pediatric tuberculosis (TB) contact investigation for rapid identification of active tuberculosis and initiation of preventive therapy. This study aims to evaluate the impact of a community-based intervention as compared to facility-based model for the management of children in contact with bacteriologically confirmed pulmonary TB adults in low-resource high-burden settings. Methods/design This multicenter parallel open-label cluster randomized controlled trial is composed of three phases: I, baseline phase in which retrospective data are collected, quality of data recording in facility registers is checked, and expected acceptability and feasibility of the intervention is assessed; II, intervention phase with enrolment of index cases and contact cases in either facility- or community-based models; and III, explanatory phase including endpoint data analysis, cost-effectiveness analysis, and post-intervention acceptability assessment by healthcare providers and beneficiaries. The study uses both quantitative and qualitative analysis methods. The community-based intervention includes identification and screening of all household contacts, referral of contacts with TB-suggestive symptoms to the facility for investigation, and household initiation of preventive therapy with follow-up of eligible child contacts by community healthcare workers, i.e., all young (< 5 years) child contacts or older (5–14 years) child contacts living with HIV, and with no evidence of TB disease. Twenty clusters representing TB diagnostic and treatment facilities with their catchment areas are randomized in a 1:1 ratio to either the community-based intervention arm or the facility-based standard of care arm in Cameroon and Uganda. Randomization was stratified by country and constrained on the number of index cases per cluster. The primary endpoint is the proportion of eligible child contacts who initiate and complete the preventive therapy. The sample size is of 1500 child contacts to identify a 10% difference between the arms with the assumption that 60% of children will complete the preventive therapy in the standard of care arm. Discussion This study will provide evidence of the impact of a community-based intervention on household child contact screening and management of TB preventive therapy in order to improve care and prevention of childhood TB in low-resource high-burden settings. Trial registration ClinicalTrials.gov NCT03832023. Registered on 6 February 2019

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Seeing is believing: the impact of body-worn cameras on court outcomes, a cluster-randomized controlled trial in Miami Beach

Journal of Experimental Criminology ◽

10.1007/s11292-021-09479-6 ◽

2021 ◽

Author(s):

Kevin Petersen ◽

Alejandro Mouro ◽

Donald Papy ◽

Noel Castillo ◽

Barak Ariel

Keyword(s):

Domestic Violence ◽

Randomized Controlled Trial ◽

Police Officers ◽

Negative Binomial ◽

Controlled Trial ◽

Cluster Randomized Controlled Trial ◽

Randomized Controlled ◽

Early Results ◽

Cluster Randomized ◽

The Impact

Abstract Objectives To assess the effects of BWCs on prosecutorial and court-related charge outcomes across multiple crime types, including domestic violence charges, crimes committed against police officers, and drug/alcohol charges. Methods A cluster-randomized controlled trial with 22 spatiotemporal police units assigned to BWCs and 17 assigned to control conditions. Data from the State Attorney’s Office were used to track convictions, adjudication withheld dispositions, and declined prosecutions for both experimental and control charges. A series of multilevel logistic and negative binomial regression models were used to estimate the effect of BWC footage on charge outcomes. Outcomes BWCs led to a significantly higher proportion of crimes against police officers resulting in convictions or adjudication withheld outcomes, and a significantly higher proportion of domestic violence charges resulting in convictions alone, compared to control charges. However, after the clustering effect was taken into account, only the effect of BWCs on crimes against police officers remained statistically significant. Conclusion These early results suggest that BWCs have significant evidentiary value that varies by crime type. BWCs may be best suited to capture evidence of crimes committed against police officers and potentially in domestic violence offenses as well.

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