Individual-level, unblinded randomized controlled trial of an 8-week (short arm) or 24-week (extended arm) pulmonary rehabilitation program, relative to standard of care, to prevent post-tuberculosis respiratory morbidity. Randomization will occur in a 1:1:1 ratio at the initiation of treatment.
8 weeks (short arm) or 24 weeks (extended arm) of a pulmonary rehabilitation (PR) program, administered during TB treatment, comprising of exercise training, counselling and education, and airway clearance techniques. Objectives: 1. To compare the effectiveness of two home-based PR programs, administered during TB treatment, for preventing post-TB respiratory morbidity. 2. To describe the intersection between clinic-level service organization, fidelity of intervention delivery, and change in client behavior for the two PR programs. 3. To compare the costs, cost-effectiveness, and budget impact of the two different PR strategies implemented as a routine program.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
690
8 weeks (short arm) of a pulmonary rehabilitation (PR) program, administered during TB treatment, comprising of exercise training, counselling and education, and airway clearance techniques.
24 weeks (extended arm) of a pulmonary rehabilitation (PR) program, administered during TB treatment, comprising of exercise training, counselling and education, and airway clearance techniques.
Six-Minute Walk Test (6MWT) distance (meters)
Mean distance compared between study arms
Time frame: 48 weeks post enrollment
Six minute walk test (6MWT) distance (meters)
Mean 6MWT distance compared between study arms at 8,16 \& 24 weeks after enrollment.
Time frame: 8,16 & 24 weeks post enrollment
Absolute percent change in Mean Six minute walk test (6MWT) distance
Difference between study arms in the absolute and percent change in mean 6MWT distance
Time frame: 8,16, 24 & 48 weeks post enrollment
Proportion of Participants with change in Six minute walk test (6MWT) distance (meters)
Difference between study arms in the proportion of participants with an Minimal Clinically Important Difference (MCID) change in the 6MWT distance
Time frame: 8,16, 24 & 48 weeks post enrollment
St. George's Respiratory Questionnaire (SGRQ) score
The questionnaire measures respiratory health quality of life in three areas with a total score ranging from 0-100. A higher score indicates poorer health status.
Time frame: 8,16,24 & 48 weeks post enrollment
Absolute change in score for St. George's Respiratory Questionnaire (SGRQ)
Difference between study arms in the absolute change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Percent change in score for St. George's Respiratory Questionnaire (SGRQ)
Difference between study arms in the percent change in questionnaire score
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Time frame: 8,16,24 & 48 weeks post enrollment
Proportion of participants with change in score for St. George's Respiratory Questionnaire (SGRQ)
Difference between study arms in the proportion of participants with an MCID change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Modified Medical Research Council (mMRC) Dyspnoea Scale
The Modified Medical Research Council Dyspnea Scale scores range from 0 (minimum) to 4 (maximum), with higher scores indicating more severe dyspnea.
Time frame: 8,16,24 & 48 weeks post enrollment
Absolute change in the Modified Medical Research Council (mMRC) Dyspnoea Scale
Difference between study arms in the absolute change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Percent change in the Modified Medical Research Council (mMRC) Dyspnoea Scale
Difference between study arms in the percent change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Proportion of participants with change in Modified Medical Research Council (mMRC) Dyspnoea Scale
Difference between study arms in the proportion of participants with an MCID change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Chronic Respiratory Disease Questionnaire (CRQ) Dyspnea score
The CRQ assesses dyspnea on a Likert scale from 1 (Extremely short of breath) to 7 (Not at all short of breath). Total score ranges from 5 - 35. Lower scores indicate higher severity of dyspnea.
Time frame: 8,16,24 & 48 weeks post enrollment
Absolute change in Chronic Respiratory Disease Questionnaire (CRQ) Dyspnea score
Difference between study arms in the absolute change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Percent Change in Chronic Respiratory Disease Questionnaire (CRQ) Dyspnea score
Difference between study arms in the percent change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Proportion of participants with change in Chronic Respiratory Disease Questionnaire (CRQ) Dyspnea sore
Difference between study arms in the proportion of participants with an MCID change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
COPD Assessment Test (CAT) score
CAT total score range is from 0-40, higher scores indicates a more severe impact of COPD on a patient's life.
Time frame: 8,16,24 & 48 weeks post enrollment
Absolute change in COPD Assessment Test (CAT) score
Difference between study arms in the absolute change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
Percent change in COPD Assessment Test (CAT) score
Difference between study arms in the percent change in questionnaire scores 8,16, 24 \& 48 weeks after enrollment.
Time frame: 8,16,24 & 48 weeks post enrollment
Proportion of participants with a change in COPD Assessment Test (CAT) score
Difference between study arms in the proportion of participants with an MCID change in questionnaire score
Time frame: 8,16,24 & 48 weeks post enrollment
FEV1 volume (mL) - Lung function
FEV1 volume (mL) compared between study arms at 24 \& 48 weeks after enrollment.
Time frame: 24 & 48 weeks post enrollment
Absolute change in FEV1 volume (mL) - Lung function
Difference between study arms in the absolute change in FEV1 volume
Time frame: 8, 16, 24 & 48 weeks post enrollment
Percent change in FEV1 volume (mL) - Lung function
Difference between study arms in the percent change in FEV1 volume by 8,16, 24 \& 48 weeks after enrollment.
Time frame: 8, 16, 24 & 48 weeks post enrollment
Proportion of participants with change in FEV1 and/or FVC volume (mL) - Lung function
Difference between study arms in the proportion of participants with a MCID change in FEV1 and/or FVC
Time frame: 8, 16, 24 & 48 weeks post enrollment
FVC volume (mL) - Lung function
FVC volume (mL) compared between study arms
Time frame: 24 & 48 weeks post enrollment
Absolute change in FVC volume (mL) - Lung function (FEV1 and FVC)
Difference between study arms in the absolute change in FVC volume
Time frame: 8,16, 24 & 48 weeks post enrollment
Percent change in FVC volume (mL) - Lung function (FEV1 and FVC)
Difference between study arms in the percent change in FVC volumes
Time frame: 8,16, 24 & 48 weeks post enrollment