Clinical Trial Details
— Status: Active, not recruiting
Administrative data
| NCT number |
NCT03376152 |
| Other study ID # |
2016119356 |
| Secondary ID |
|
| Status |
Active, not recruiting |
| Phase |
N/A
|
| First received |
|
| Last updated |
|
| Start date |
November 4, 2017 |
| Est. completion date |
December 2024 |
Study information
| Verified date |
February 2024 |
| Source |
University of California, Berkeley |
| Contact |
n/a |
| Is FDA regulated |
No |
| Health authority |
|
| Study type |
Interventional
|
Clinical Trial Summary
This study will evaluate the impact of a pilot Rural Electric Kettle Promotion Program
offered to low-income households in rural Anhui Province, China. The primary objective of
this study is to determine whether this promotion program causes poverty households currently
boiling their drinking water with solid-fuels (or drinking untreated water or bottled water)
to switch to boiling their drinking water with electric kettles, and if so, how such a switch
might improve safe drinking water access and/or reduce household air pollution.
Description:
Previous research suggests that increasing the use of electric kettles for boiling (i.e.,
treating) drinking water in low-income areas of rural China could help expand access to safer
drinking water, reduce household air pollution, and improve environmental and health outcomes
in rural Chinese households currently boiling drinking water with solid-fuels (or not
treating their water, or drinking contaminated bottled water).
The study will use a parallel arm cohort cluster-randomized controlled trial design with a
1:1 ratio. The study will randomize 30 clusters (i.e., villages) to treatment or control
using stratified randomization by geography (two levels: mountains and plains) and by cluster
proportions of reported electric kettle use at baseline. Randomization sequence generation
will be conducted by A. Cohen using a random number generator (with a reproducible seed) in
Stata v.13.1 (StataCorp, College Station, Texas, USA).
The study will collect data from 30 randomly selected households in 15 villages, for a total
of 900 households. This sample size was powered to measure a 15% (or larger) change in
electric kettle adoption, because the Chinese Center for Disease Control and Prevention
(China CDC) will be unlikely to rollout a national program if adoption rates are less than
15%.
After baseline data collection and randomized allocation, in the intervention group
village-level promotion events will take place in November-December of 2017, and will be
organized by the provincial and county China CDC, in collaboration with the National Center
for Rural Water Supply Technical Guidance (NCRWSTG). At these promotion events, households in
the intervention group will be provided free, food-grade quality, electric kettles, as well
as promotional materials (a calendar and poster) and information about the benefits of
electric kettle use and improved hygiene and sanitation practices.
Because of known issues with decreasing adoption of drinking water treatment after behavior
change promotion interventions such as this, and considering expected seasonal variation in
boiling practices and frequencies, study data was initially planned to be collected over a
period of 12 months (with additional qualitative follow-up via focus groups: 2019-03,
2019-08).
We were able to extend the follow-up data collection period from 12-months to 24-months, so
we did not collect data from focus groups in 2019-03 or 2019-08 as originally planned.
Follow-up data collection was completed in November 2019.
Due to the COVID-19 pandemic, we again postponed plans to collect data from focus groups
(data cleaning efforts were delayed until 2021, and completed at the end of 2022). Logistics
allowing, we hope to collect data from focus groups in 2023.
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