Plain English Summary
Background and study aims
Tuberculosis (TB) is a common, infectious condition caused by a bacterial infection. It is generally spread by breathing in tiny droplets released into the air by an infected person coughing or sneezing. TB usually affects the lungs (pulmonary TB), but it can also affect other areas of the body such as the bones, brain and kidneys. Treatment for TB usually involves taking a combination of antibiotic drugs, usually including rifampicin. After taking medication for a few weeks, many patients begin to feel better and so do not complete their medication course (usually around 6 months). This poor medication adherence can lead to negative consequences, such as the TB infection becoming resistant to the antibiotics. China has the second highest number of TB cases globally and so it is vital to ensure that TB patients adhere to their treatment properly. In a previous study, text message reminders, a medication monitor, or both were compared to standard care alone, to find out if they could improve treatment adherence. The aim of this study is to find out how well a second version of the medication monitor performs and whether improving adherence is related to better recovery of patients.
Who can participate?
Adults who have tested positive for TB which is sensitive to treatment using rifampicin.
What does the study involve?
Twelve communities are randomly allocated to one of two groups. Participants living in communities in the first group are provided with a medication monitoring box, with reminding functions. This box is used to remind patients to take the medication each day and to attend their monthly follow-up visits. The monitor also records the date and time that it is opened, which can be used to record whether patients have been taking their medication properly. Participants in the second group continue to receive standard care only. Participants in both groups are followed up after 6, 12 and 18 months in order to evaluate medication adherence and recovery.
What are the possible benefits and risks of participating?
Patients will benefit from no delay in accessing treatments as their caring physician will receive information early on how well the patient is taking their medication and if the patient has problems then different methods will be started. Additionally, by testing the patient's sputum for TB at 12 and 18 months and taking a chest x-ray, it is possible to find out if TB has come back and so patients can receive the appropriate treatment faster. There are no notable risks involved with taking part in this study.
Where is the study run from?
The study is run by the China Centre for Disease Control and Prevention and takes place across 24 counties/districts in the provinces of Zhejiang, Jiangxi and Jilin (China)
When is the study starting and how long is it expected to run for?
July 2015 to December 2020
Who is funding the study?
Bill and Melinda Gates Foundation (USA)
Who is the main contact?
Dr Xiaoqui Liu
Cluster randomized trial of a medication monitor in the treatment management of patients with pulmonary tuberculosis
A treatment strategy that includes use of a medication monitor for reminding daily drug dosing and monitoring adherence patterns, and targeted intensive management of patients with poor adherence patterns, can reduce a composite poor outcome among adults with drug sensitive pulmonary TB.
1. Institutional Review Board of China CDC. 09/03/2016, ref: 201603
2. London School of Hygiene and Tropical Medicine Ethics Committee, 04/04/2016, ref: 10665
Cluster randomized non-blinded controlled trial
Primary study design
Secondary study design
Cluster randomised trial
Patient information sheet
Not available in web format, please use the contact details below to request a patient information sheet.
This is a cluster randomised non blinded trial. Clusters are defined as a county or district. This is a two armed trial, one intervention arm and one control arm:
Intervention arm: Patients are provided with a medication monitor box with reminding functions. This tool is used to remind patients both to take their tuberculosis medication and to attend their monthly follow-up appointments. It also records drug intake. Doctors collect the drug intake record from medication monitor monthly to assess that how many doses are missed in a month. Based on the missed doses, additional interventions are recommended to be implemented by the patient's doctor such as additional visits from the township/village doctor.
Control arm: Patients are managed based on the current standard of care.
Patients will be followed up for 18 months after the start of tuberculosis treatment.
Primary outcome measures
Composite poor outcome* is measured using patient records, laboratory results (culture and smear), chest X-ray results and patient self-report over the 18 month period following enrollment to the study.
*The composite poor outcome is defined as any of: death at any time during the approximately six months of TB treatment (abstracted from patient records); loss to follow-up during the approximately six months of TB treatment i.e. treatment was interrupted for two consecutive months or more (abstracted from patient records); treatment failure i.e sputum smear or culture is positive at month 5 or later during the approximately six months of TB treatment (laboratory results abstracted from patient records); microbiological confirmation of TB, or positive chest X-ray findings in absence of microbiological results, at 12 or 18 months after enrollment to the study (laboratory results, based on smear and culture, and chest X-ray findings); or restarting TB treatment between the end of treatment and 18 months after enrollment to the study (patient records and patient self-report).
Secondary outcome measures
1. Poor outcome at the end of treatment (death, treatment failure or loss to follow-up) is measured using patient records and laboratory results (culture and smear) at the end of approximately six months of TB treatment (definitions of death, treatment failure or loss to follow-up are the same as for the primary outcome)
2. Composite poor outcome is measured using patient records, laboratory results (culture and smear), chest X-ray results and patient self-report over the 12 month period following enrollment to the study. Definition the same as for the primary outcome excluding the microbiological confirmation at 18 months and only assessing for restarting of TB treatment between the end of treatment and 12 months after enrollment to the study.
3. Loss to follow-up during the approximately six months of TB treatment i.e. treatment was interrupted for two consecutive months or more (abstracted from patient records), as per standard TB outcome case definitions
1. The percentage of months in which the patient missed at least 20% of doses, measured using data from medication monitor box at each of the approximately monthly follow-up visits during the approximately six months of treatment
2. The percentage of doses missed, measured using data from the medication monitor box monthly at each of the approximately monthly follow-up visits during the approximately six months of treatment
1. Mean cost per patient treatment month is measured using financial records, event data from trial CRFs, staff semi-structured interviews and observations, and patient surveys at the end of approximately six months of TB treatment
2. Mean and incremental costs per patient completing treatment is measured using financial records, event data from trial CRFs, staff semi-structured interviews and observations, and patient surveys at the end of approximately six months of TB treatment
3. Mean and incremental costs per death and DALY averted is measured using primary outcomes above, financial records, data from trial CRFs, staff semi-structured interviews and observations, and patient surveys at the end of approximately six months of TB treatment
4. Mean and incremental number of cases experiencing catastrophic costs is measured using data from trial CRFs, and patient surveys at the end of approximately six months of TB treatment
Overall trial start date
Overall trial end date
Participant inclusion criteria
1. New pulmonary TB case
2. Gene Xpert-positive and rifampicin-sensitive
3. Patient/family member able to use medication monitor after training
4. Likely to be in the study area for next 18 months; or able to attend the 12 and 18 month follow-up visits after the start of treatment
5. Patient agrees to fixed-dose combination (FDC)
6. Patient is receiving treatment from TB designated hospital or TB dispensary at the county (district) level and treatment management in the community health service centers
7. Receiving daily chemotherapy regimen
Target number of participants
Two trial arms, 12 clusters per arm, 125 patients per cluster, total of 3000 patients
Participant exclusion criteria
1. Aged <18 years
2. Communication impairment
3. Gene Xpert negative or Gene Xpert positive and rifampicin resistant
4. Travel planned during the intensive phase
5. Tuberculous pleuritis
6. Known to be HIV-positive
7. Custody patients (prison and medicine rehabilitation center)
8. Patients who have been hospitalised continuously for the first two months of treatment
1. Participants whose Gene Xpert result was not known at enrolment and found to either be Gene Xpert-negative or Gene Xpert-positive and rifampicin resistant
2. Participants who stopped taking the Fixed Dose Combination tablets within the first 1 month due to an adverse reaction
3. Participants who permanently stopped the treatment management model within the first 1 month due to, for example, travel, hospitalisation, etc.
4. Participant subsequent found to be HIV-positive
Participants satisfying the exclusion criteria listed above will be withdrawn from the study and not contribute to study outcomes.
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
China Center for Disease Control and Prevention
China Center for Disease Control and Prevention
No. 155 Changbai Road
Bill and Melinda Gates Foundation
Bill & Melinda Gates Foundation
Funding Body Type
private sector organisation
Funding Body Subtype
United States of America
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Stored in repository
Results - basic reporting