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Fitbit Steps Intraday

Sensor parameters description for [FITBIT_STEPS_INTRADAY]:

Key                              Description
[CONTAINER] Container where your steps intraday data is stored, depending on the data stream you are using this can be a database table, a CSV file, etc.
[EXCLUDE_SLEEP] Step data will be excluded if it was logged during sleep periods when at least one [EXCLUDE] flag is set to True. Sleep can be delimited by (1) a fixed period that repeats on every day if [TIME_BASED][EXCLUDE] is True or (2) by Fitbit summary sleep episodes if [FITBIT_BASED][EXCLUDE] is True. If both are True (3), we use all Fitbit sleep episodes as well as the time-based episodes that do not overlap with any Fitbit episodes. If [TIME_BASED][EXCLUDE] is True, make sure Fitbit sleep summary container points to a valid table or file.

RAPIDS provider

Available time segments

  • Available for all time segments

File Sequence

- data/raw/{pid}/fitbit_steps_intraday_raw.csv
- data/raw/{pid}/fitbit_steps_intraday_with_datetime.csv
- data/raw/{pid}/fitbit_sleep_summary_raw.csv (Only when [EXCLUDE_SLEEP][EXCLUDE]=True and [EXCLUDE_SLEEP][TYPE]=FITBIT_BASED)
- data/interim/{pid}/fitbit_steps_intraday_with_datetime_exclude_sleep.csv (Only when [EXCLUDE_SLEEP][EXCLUDE]=True)
- data/interim/{pid}/fitbit_steps_intraday_features/fitbit_steps_intraday_{language}_{provider_key}.csv
- data/processed/features/{pid}/fitbit_steps_intraday.csv

Parameters description for [FITBIT_STEPS_INTRADAY][PROVIDERS][RAPIDS]:

Key                              Description
[COMPUTE] Set to True to extract FITBIT_STEPS_INTRADAY features from the RAPIDS provider
[FEATURES] Features to be computed from steps intraday data, see table below
[REFERENCE_HOUR] The reference point from which firststeptime or laststeptime is to be computed, default is midnight
[THRESHOLD_ACTIVE_BOUT] Every minute with Fitbit steps data wil be labelled as sedentary if its step count is below this threshold, otherwise, active.
[INCLUDE_ZERO_STEP_ROWS] Whether or not to include time segments with a 0 step count during the whole day.

Features description for [FITBIT_STEPS_INTRADAY][PROVIDERS][RAPIDS]:

Feature Units Description
sumsteps steps The total step count during a time segment.
maxsteps steps The maximum step count during a time segment.
minsteps steps The minimum step count during a time segment.
avgsteps steps The average step count during a time segment.
stdsteps steps The standard deviation of step count during a time segment.
firststeptime minutes Minutes until the first non-zero step count.
laststeptime minutes Minutes until the last non-zero step count.
countepisodesedentarybout bouts Number of sedentary bouts during a time segment.
sumdurationsedentarybout minutes Total duration of all sedentary bouts during a time segment.
maxdurationsedentarybout minutes The maximum duration of any sedentary bout during a time segment.
mindurationsedentarybout minutes The minimum duration of any sedentary bout during a time segment.
avgdurationsedentarybout minutes The average duration of sedentary bouts during a time segment.
stddurationsedentarybout minutes The standard deviation of the duration of sedentary bouts during a time segment.
countepisodeactivebout bouts Number of active bouts during a time segment.
sumdurationactivebout minutes Total duration of all active bouts during a time segment.
maxdurationactivebout minutes The maximum duration of any active bout during a time segment.
mindurationactivebout minutes The minimum duration of any active bout during a time segment.
avgdurationactivebout minutes The average duration of active bouts during a time segment.
stddurationactivebout minutes The standard deviation of the duration of active bouts during a time segment.

Assumptions/Observations

  1. Active and sedentary bouts. If the step count per minute is smaller than THRESHOLD_ACTIVE_BOUT (default value is 10), that minute is labelled as sedentary, otherwise, is labelled as active. Active and sedentary bouts are periods of consecutive minutes labelled as active or sedentary.