Evaluating In-line Chlorination in Nigeria
In-line Chlorination for Drinking Water Treatment in Nigeria
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Studietype
Studietype
Registrering (Antatt)
Registrering
Fase
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiekontakt
Studiekontakt
- Navn: Amy J Pickering
- Telefonnummer: +1.510.410.2666
- E-post: pickering@berkeley.edu
Studer Kontakt Backup
- Navn: Elisa M Maffioli
- Telefonnummer: +1.443.875.4930
- E-post: elisamaf@umich.edu
Studiesteder
-
-
Cross River State
-
Yala, Cross River State, Nigeria
- Yala LGA
-
Ta kontakt med:
- Gbenga Adedayo
- Telefonnummer: +234.805.602.6845
- E-post: gadedayo@hanovialimited.com
-
-
Kano State
-
Makuda, Kano State, Nigeria
- Makoda LGA
-
Ta kontakt med:
- Gbenga Adedayo
- Telefonnummer: +234.805.602.6845
- E-post: gadedayo@hanovialimited.com
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Barn
- Voksen
- Eldre voksen
Tar imot friske frivillige
Beskrivelse
Inclusion Criteria:
- Adult (18+) or emancipated minor (15+) pregnant women and women with children under 5 years old who do not plan to permanently move in the next 12 months.
- Must be knowledgeable about the household's water collection and management practices
Exclusion Criteria:
- Non-age-eligible women. Men and non-emancipated minors. Women who do not consent.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
|---|---|
|
Eksperimentell: Arm 1: Inline Chlorination (ILC) with Behavioral Change Communication (BCC)
Communities randomized to this arm will receive inline chlorination installed at eligible communal drinking water systems, such as boreholes or handpumps, and behavioral change communication.
|
In-line chlorination devices will be installed on all compatible communal water systems within treatment communities.
Devices automatically dose chlorine proportional to water flow without requiring electricity or daily user input.
Technologies will include TuriTap liquid dosers installed at handpumps and CTI-8 tablet dosers installed at tanks or piped systems.
Devices will be calibrated and routinely monitored to maintain chlorine residual within recommended ranges.
In addition to device installation, communities will participate in behavior change communication (BCC) activities designed to support understanding and acceptance of chlorinated water.
BCC activities will include community sensitization meetings conducted by the implementing partner.
Meetings will provide information on the purpose of chlorination through the in-line chlorination devices, expected benefits and limitations, safe water handling practices, and guidance for addressing taste or odor concerns.
|
|
Ingen inngripen: Arm 2: Control (No Chlorination)
Communities randomized to this arm will not receive inline chlorination during the study period and will continue their usual water collection and treatment practices.
|
Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Proportion of water source samples with detectable free chlorine residual.
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as >0.1 ppm.
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Proportion of household stored drinking water samples with detectable free chlorine residual.
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as >0.1 ppm.
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Proportion of household stored drinking water samples positive for Escherichia coli.
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as >1 MPN/100 mL of water by culture-based assay
|
About 4-, 8-, and 12-month follow ups after device installations
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Proportion of water source samples with detectable total chlorine residual.
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as >0.1 ppm.
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Concentration of E. coli in water source samples
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Concentration of E. coli (in log10 MPN/100ml) in water source samples by culture-based assay
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Concentration of E. coli in household stored water samples
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Concentration of E. coli (in log10 MPN/100ml) in household stored water samples by culture-based assay
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Concentration of total coliform bacteria in water source samples
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Concentration of total coliform bacteria (MPN/100mL) in water source samples
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Concentration of total coliform bacteria in household stored water samples
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Concentration of total coliform bacteria (MPN/100mL) in household stored water samples
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Prevalence of caregiver-reported diarrhea among children under five years of age
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as the proportion of children under five reported by caregivers to have experienced diarrhea, defined as three or more loose or watery stools within a 24-hour period, during the 7 days preceding the survey.
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Prevalence of caregiver-reported diarrhea among household members, any age
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as the proportion of individuals surveyed in the household that have experienced diarrhea, defined as three or more loose or watery stools within a 24-hour period, during the 7 days preceding the survey.
Measured for subset of available respondents.
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Prevalence of diarrhea among female caregivers
Tidsramme: Time frame - About 4-, 8-, and 12-month follow ups after device installations
|
Measured as the proportion of respondents that have experienced diarrhea, defined as three or more loose or watery stools within a 24-hour period, during the 7 days preceding the survey.
|
Time frame - About 4-, 8-, and 12-month follow ups after device installations
|
Andre resultatmål
Andre resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Proportion of households reporting an ILC-compatible water source as their primary drinking water source
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as the percentage of surveyed households identifying an ILC-compatible water system as their source of drinking water.
ILC-compatible water systems (boreholes, piped systems, or handpumps have chlorinated water in treatment)
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Proportion of households switching away from ILC-treated water sources
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as the percentage of households that discontinue use of a chlorinated water system for drinking water compared to baseline.
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Proportion of households reporting any household-level water treatment
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Measured as the percentage of households reporting treatment of drinking water prior to consumption (e.g., boiling, filtration, manual chlorination).
|
About 4-, 8-, and 12-month follow ups after device installations
|
|
Time spent on household-level water treatment
Tidsramme: About 4-, 8-, and 12-month follow ups after device installations
|
Time (minutes) reported by households per day on making water safer to drink (gender stratified)
|
About 4-, 8-, and 12-month follow ups after device installations
|
Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Samarbeidspartnere
Samarbeidspartnere
Etterforskere
Etterforskere
- Hovedetterforsker: Amy J Pickering, University of California, Berkeley
- Hovedetterforsker: Elisa M Maffioli, University of Michigan
- Hovedetterforsker: Adamu I Tanko, PhD, Bayero University Kano, Nigeria
Publikasjoner og nyttige lenker
Generelle publikasjoner
- Lindmark M, Cherukumilli K, Crider YS, Marcenac P, Lozier M, Voth-Gaeddert L, Lantagne DS, Mihelcic JR, Zhang QM, Just C, Pickering AJ. Passive In-Line Chlorination for Drinking Water Disinfection: A Critical Review. Environ Sci Technol. 2022 Jul 5;56(13):9164-9181. doi: 10.1021/acs.est.1c08580. Epub 2022 Jun 14.
- Pickering AJ, Crider Y, Sultana S, Swarthout J, Goddard FG, Anjerul Islam S, Sen S, Ayyagari R, Luby SP. Effect of in-line drinking water chlorination at the point of collection on child diarrhoea in urban Bangladesh: a double-blind, cluster-randomised controlled trial. Lancet Glob Health. 2019 Sep;7(9):e1247-e1256. doi: 10.1016/S2214-109X(19)30315-8.
Studierekorddatoer
Studer hoveddatoer
Studiestart (Antatt)
Studiestart
Primær fullføring (Antatt)
Primær fullføring
Studiet fullført (Antatt)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
Andre studie-ID-numre
- 2025-08-18832
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Studerer et amerikansk FDA-regulert enhetsprodukt
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .