Table 1 Study characteristics extracted for each observational study wave
Study variable | Description |
|---|---|
Descriptive information | |
Study name | The given name of the cohort study and study acronym |
Year of measurement | The year in which the accelerometer measurement began |
Methods employed for collection of data on physical behaviours | |
Accelerometer used | The accelerometer device chosen for data collection (manufacturer make and model) |
Accelerometer wear location | The body location at which the accelerometer was worn |
Accelerometer distribution method | The method by which participants received an accelerometer |
Accelerometer return method | The method by which accelerometers were returned to investigators following measurement |
Accelerometer wear instructions | The time period over which participants were requested to wear an accelerometer |
Participant follow-up | Whether participants were contacted during the measurement period |
Minimum valid wear criteria | The minimum amount of accelerometer wear required for a data file to be included in analyses |
Outcomes from measurement of physical behaviours | |
N Invited | The number of participants invited to wear an accelerometer |
N Consented | The number of participants invited to wear an accelerometer who consented |
N Devices lost | The number of accelerometers lost during measurement |
Average daily valid accelerometer wear | Average daily valid accelerometer wear reported in hours per day (or calculated from reported values if possible) |
N adhered | The number of people who met the minimum wear criteria and were included in analyses |
Response bias | Reported demographic differences between those meeting wear criteria and those invited or the original study sample |
Adverse events | The number and description of any adverse events relating to accelerometer wear |