Timed Walk Active Task Export Format

The Timed Walk Active Task is based on the ResearchKit Timed Walk task. Instead of shaking the device in response to the stimulus, however, the participant simply lifts their finger and taps the stimulus when it appears.

When your project uses the CSV export format for Survey Results, data for Active Tasks is exported in the file SurveyTimedWalkResults.csv. When your project uses the JSON export format, Active Task data is included in the file SurveyResults.json.

For a typical survey using this task, you'll expect to see:

• One survey result each time the participant completes the survey.
• One Timed Walk result for each segment of the activity (one for the walk out; one for the walk back).

Data Fields

Sample CSV Export

SurveyTimedWalkResultKey,SurveyStepResultKey,SurveyResultKey,ParticipantIdentifier,TimeLimit,Duration,DistanceInMeters,StartDate,EndDate
fe1a740d-0981-eb11-88a8-001c426fd18d,eb1a740d-0981-eb11-88a8-001c426fd18d,e01a740d-0981-eb11-88a8-001c426fd18d,123ac,180,20.429930875,100,2021-03-09T13:55:44-05:00,2021-03-09T13:55:44-05:00
011b740d-0981-eb11-88a8-001c426fd18d,ec1a740d-0981-eb11-88a8-001c426fd18d,e01a740d-0981-eb11-88a8-001c426fd18d,123ac,180,5.9254299579999996,100,2021-03-09T13:55:50-05:00,2021-03-09T13:55:50-05:00

Sample JSON Export

Note that since the JSON export is included in the SurveyResults.json file, some of the reference keys either do not apply, or are part of the overall survey step data.

{"SurveyResultKey":"e01a740d-0981-eb11-88a8-001c426fd18d","SurveyKey":"0f6d828d-0781-eb11-88a8-001c426fd18d","SurveyName":"timedwalk","ParticipantIdentifier":"123ac","SurveyTaskKey":"c903a59b-0781-eb11-88a8-001c426fd18d","Type":"Survey","SurveyVersion":0,"StartDate":"2021-03-09T13:54:56-05:00","EndDate":"2021-03-09T13:55:53-05:00","DevicePlatform":"iOS","DeviceName":"iPhone8,4","DeviceOSVersion":"14.3","InsertedDate":"2021-03-09T18:55:54Z","StepResults":[{"SurveyStepResultKey":"e71a740d-0981-eb11-88a8-001c426fd18d","StepIdentifier":"instruction","StartDate":"2021-03-09T13:54:56-05:00","EndDate":"2021-03-09T13:55:01-05:00","Results":[]},{"SurveyStepResultKey":"e81a740d-0981-eb11-88a8-001c426fd18d","StepIdentifier":"timed.walk.form","StartDate":"2021-03-09T13:55:01-05:00","EndDate":"2021-03-09T13:55:13-05:00","Results":[{"Type":"QuestionResult","QuestionResultKey":"f61a740d-0981-eb11-88a8-001c426fd18d","ResultIdentifier":"timed.walk.form.afo","Answers":["False"],"StartDate":"2021-03-09T13:55:03-05:00","EndDate":"2021-03-09T13:55:03-05:00"},{"Type":"QuestionResult","QuestionResultKey":"f71a740d-0981-eb11-88a8-001c426fd18d","ResultIdentifier":"timed.walk.form.assistance","Answers":["None"],"StartDate":"2021-03-09T13:55:13-05:00","EndDate":"2021-03-09T13:55:13-05:00"}]},{"SurveyStepResultKey":"e91a740d-0981-eb11-88a8-001c426fd18d","StepIdentifier":"instruction1","StartDate":"2021-03-09T13:55:13-05:00","EndDate":"2021-03-09T13:55:18-05:00","Results":[]},{"SurveyStepResultKey":"ea1a740d-0981-eb11-88a8-001c426fd18d","StepIdentifier":"countdown","StartDate":"2021-03-09T13:55:18-05:00","EndDate":"2021-03-09T13:55:23-05:00","Results":[]},{"SurveyStepResultKey":"eb1a740d-0981-eb11-88a8-001c426fd18d","StepIdentifier":"timed.walk.trial1","StartDate":"2021-03-09T13:55:23-05:00","EndDate":"2021-03-09T13:55:44-05:00","Results":[{"Type":"TimedWalkResult","SurveyTimedWalkResultKey":"fe1a740d-0981-eb11-88a8-001c426fd18d",
"TimeLimit":180.0,
"Duration":20.429930875,
"DistanceInMeters":100.0,
"StartDate":"2021-03-09T13:55:44-05:00",
"EndDate":"2021-03-09T13:55:44-05:00"
},
{
"TimeLimit":180.0,
"Duration":5.9254299579999996,
"DistanceInMeters":100.0,
"StartDate":"2021-03-09T13:55:50-05:00",
"EndDate":"2021-03-09T13:55:50-05:00
}