Data extraction included (1) study design, (2) participant characteristics, (3) type/brand of IMU, (4) tasks included in the assessment protocol, and (5) outcomes.
Data extraction included research design, health focus of the collaboration, factors being evaluated, how factors were conceptualized and measured, and outcome measures.
A standardized form was used for data extraction, including the following items: first author, year of the study, country where the study was performed, type of behavioral intervention, mode of electronic delivery, study design, recruitment and setting, headache type, participants, outcomes measured, and results.
A total of 26 studies that were identified and included in the data extraction included 19 studies in the United States, 2 studies in the Netherlands, 1 study each in Germany, China, Italy, and Canada, and 1 study reported data that were collected from 3 countries: Germany, France, and England.
Data extraction included information on study setting, study population, cohort size, duration of follow up, antiretroviral therapy (ART), baseline CD4 cell count, baseline HIV viral load, exclusion of patients with TB history, mortality, type of statistical model and measures of association estimating the effect of TB on mortality.
Primary sources for data extraction include both paper and electronic medical records.
Trial selection and data extraction including quality assessment were done independently by two authors to minimise bias and transcription errors.
A total of 70 studies were selected for data extraction including fourteen intervention studies and fifty six observational studies.
Data extraction including assessments of random sequence generation and allocation concealment was conducted independently by two reviewers.
Data extraction included Study characteristics: inclusion criteria including clinical area, types of interventions, databases or journals searched within the study and any search date restrictions.
