Trial of Safe Water Storage Among People Living With HIV
17 de junio de 2011 actualizado por: London School of Hygiene and Tropical Medicine
Randomized Controlled Trial of Safe Water Storage Among People Living With HIV
Environmental health-related pathogens include faecal-oral, diarrhoeagenic microbes that may be transmitted via drinking water and are related to sanitation and hygiene.
Previous research has suggested that safeguarding household drinking water against recontamination may be a critical intervention that can reduce risks of diarrheal diseases and may be especially important for people living with HIV/AIDS (PLWHA) and other vulnerable populations (Clasen et al. 2007).
The investigators propose here a randomised, controlled trial of a household safe storage container for drinking water in a well defined, HIV-impacted population in peri-urban Lusaka, Zambia.
After a baseline data collection period (9 months) half of all households (150 households) will be given a safe water storage container specifically designed to prevent recontamination of water in household use.
All households will be followed for an additional 9 months.
Results of this study will help determine whether this promising water quality intervention can reduce diarrhoea and related outcomes in this and similar vulnerable populations.
Descripción general del estudio
Estado
Desconocido
Condiciones
Intervención / Tratamiento
Descripción detallada
Specific Aim #1: To assess environmental health-related risk and outcomes in a low income peri-urban area of Zambia with a high percentage of people living with HIV/AIDS (PLWHA) (longitudinal observational cohort study and baseline) (Year 1). We will assemble a rich dataset on environmental health-related risk factors in a well defined population, with a focus on household drinking water quality and other water, sanitation, and hygiene (WSH) exposures.
Specific Aim #2: To quantify the WSH-related disease burden among PLWHA, compared with those without HIV/AIDS (individual and household level stratification) (conclusion of baseline). After nine months of data collection, we will perform an initial analysis to determine WSH-related risk by HIV status.
Specific Aim #3: To assess the impact of a water quality intervention on the longitudinal prevalence of Highly Credible Gastrointestinal Illness (HCGI) among PLWHA (randomized controlled trial, year 2). We will conduct a randomised, controlled trial of a safe water storage intervention. We will assess the health impacts of this intervention, with particular focus on the high-risk groups of PLWHA and children under 5 years of age.
Tipo de estudio
Intervencionista
Inscripción (Anticipado)
1600
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
-
-
-
Lusaka, Zambia
- Tropical Gastroenterology and Nutrition Group (TROPGAN), University of Zambia School of Medicine
-
-
Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
- Niño
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Sí
Géneros elegibles para el estudio
Todos
Descripción
Inclusion Criteria:
- Resident of Misisi compound, Lusaka
- Willing to participate in the study
- Is able to give informed consent and does so
- Household has one or more children who are aged 48 months or less at the start of the trial
- The household stores drinking water in the home
Exclusion Criteria:
- Not a resident of Misisi compound, Lusaka
- Unwilling to participate in the study
- Unable to give informed consent or chooses not to participate
- Household does not have one or more children aged 48 months or less at the start of the trial
- The household does not store drinking water in the home
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Prevención
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: Safe storage device
This arm will be assigned a safe water storage device.
|
This device is a specially designed water storage container that is intended to reduce the likelihood of re-contamination of household stored drinking water.
|
|
Sin intervención: Control
This arm of the trial will receive nothing until the end of the trial.
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Self-reported diarrheal disease
Periodo de tiempo: 18 months
|
Self-reported diarrheal disease information will be collected from each study participant monthly.
These data will be collected monthly with 24 hour, 48 hour, and 7-day recall.
Data will be assessed at 18 months (change from baseline).
|
18 months
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Weight-for-age z-score
Periodo de tiempo: 18 months
|
Weight-for-age z-scores will be taken for all children who are aged less than 48 months ("under 5s") at the start of the trial and monthly during the trial.
These data are useful in tracking short-term wasting, associated with diarrheal disease events.
Data will be assessed at 18 months (change from baseline).
|
18 months
|
|
E. coli and total coliforms in household drinking water
Periodo de tiempo: 18 months
|
Microbiological indicators of fecal contamination of drinking water at the household level.
Samples will be taken from all households monthly.
Data will be assessed at 18 months (change from baseline).
|
18 months
|
|
Salivary antibody response
Periodo de tiempo: 18 months
|
We will collect salivary samples from all consenting individuals (an additional consent form is required) to gather information on IgG and IgA response to specific diarrheal pathogens using a multiplex assay.
This measure provides useful information on both outcomes of interest (diarrheal disease) and exposure to diarrheagenic pathogens.
Samples will be taken at three time points: the beginning, midpoint, and end of the trial.
Data will be assessed at 18 months (change from baseline).
|
18 months
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Joe Brown, PhD, London School of Hygiene and Tropical Medicine
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio
1 de agosto de 2011
Finalización primaria (Anticipado)
1 de agosto de 2013
Finalización del estudio (Anticipado)
1 de agosto de 2013
Fechas de registro del estudio
Enviado por primera vez
14 de junio de 2011
Primero enviado que cumplió con los criterios de control de calidad
17 de junio de 2011
Publicado por primera vez (Estimar)
20 de junio de 2011
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
20 de junio de 2011
Última actualización enviada que cumplió con los criterios de control de calidad
17 de junio de 2011
Última verificación
1 de junio de 2011
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- QA308
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .