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Apple HealthKitV2 Statistics Export Format

Statistics in HealthKit have a unique data structure for capturing information specific to the participant.

One file will be created per type of data (e.g., "DailySteps"). The file name will correspond to the type of data (e.g., "HealthKitV2Statistics_DailySteps_20211101-20211217").

Data Fields

If a participant re-syncs their device, you may observe duplicate samples. HealthKit samples are immutable, so when doing data analysis, your team will need to remove any samples that have the same HealthKitStatisticKey and ParticipantIdentifier as another sample.

Sample CSV Export

HealthKitStatisticKey,ParticipantIdentifier,StartDate,Date,Value,Units,InsertedDate
37c75c56-f60b-5966-88c0-67175e835300,256263d8-3ffc-eb11-aaae-0afb9334277d,2021-08-06T00:00:00-04:00,2021-08-07T00:00:00-04:00,4813,count,2021-12-09T20:17:02Z
7a071f59-c1f8-5a23-9999-79fbf8306117,256263d8-3ffc-eb11-aaae-0afb9334277d,2021-09-20T00:00:00-04:00,2021-09-21T00:00:00-04:00,9678,count,2021-12-09T20:17:02Z
20561f76-6599-54b5-bbde-34ba2886158a,256263d8-3ffc-eb11-aaae-0afb9334277d,2021-10-31T00:00:00-04:00,2021-11-01T00:00:00-04:00,14436,count,2021-12-09T20:17:02Z
692dd8da-9b74-59dd-bc19-15d2a26be9e8,256263d8-3ffc-eb11-aaae-0afb9334277d,2021-11-09T00:00:00-05:00,2021-11-10T00:00:00-05:00,11791,count,2021-12-09T20:17:02Z

Sample JSON Export

{
 "HealthKitStatisticKey":"eba660a6-18ae-5070-a629-c44edc8157c5",
 "ParticipantIdentifier":"256263d8-3ffc-eb11-aaae-0afb9334277d",
 "StartDate":"2021-12-07T00:00:00-05:00",
 "Date":"2021-12-08T00:00:00-05:00",
 "Value":"13385",
 "Units":"count",
 "InsertedDate":"2021-12-09T22:18:05Z"
}
{
 "HealthKitStatisticKey":"032bfe45-cdc0-5cc8-b4ba-8ba06aa082c8",
 "ParticipantIdentifier":"256263d8-3ffc-eb11-aaae-0afb9334277d",
 "StartDate":"2021-09-16T00:00:00-04:00",
 "Date":"2021-09-17T00:00:00-04:00",
 "Value":"13255",
 "Units":"count",
 "InsertedDate":"2021-12-09T20:17:02Z"
}