|`[TABLE]`| Database table name or file path where the sleep intraday data is stored. The configuration keys in [Device Data Source Configuration](../../setup/configuration/#device-data-source-configuration) control whether this parameter is interpreted as table or file.
|`[INCLUDE_EPISODES_LATER_THAN]`| All sleep episodes that started after this time will be included in the feature computation. It is a number ranging from 0 (midnight) to 1439 (23:59) which denotes the number of minutes after midnight. If a segment is longer than one day, this value is for every day.
|`[REFERENCE_TIME]`| The reference point from which the `[ROUTINE]` features are to be computed. Chosen from `MIDNIGHT` and `START_OF_THE_SEGMENT`, default is `MIDNIGHT`. If you have multiple time segments per day it might be more informative to set this flag to `START_OF_THE_SEGMENT`.
The format of the column(s) containing the Fitbit sensor data can be `JSON` or `PLAIN_TEXT`. The data in `JSON` format is obtained directly from the Fitbit API. We support `PLAIN_TEXT` in case you already parsed your data and don't have access to your participants' Fitbit accounts anymore. If your data is in `JSON` format then summary and intraday data come packed together.
We provide examples of the input format that RAPIDS expects, note that both examples for `JSON` and `PLAIN_TEXT` are tabular and the actual format difference comes in the `fitbit_data` column (we truncate the `JSON` example for brevity).
??? example "Example of the structure of source data with Fitbit’s sleep API Version 1"
|`[SLEEP_LEVELS]` | Fitbit’s sleep API Version 1 only provides `CLASSIC` records. However, Version 1.2 provides 2 types of records: `CLASSIC` and `STAGES`. `STAGES` is only available in devices with a heart rate sensor and even those devices will fail to report it if the battery is low or the device is not tight enough. While `CLASSIC` contains 3 sleep levels (`awake`, `restless`, and `asleep`), `STAGES` contains 4 sleep levels (`wake`, `deep`, `light`, `rem`). To make it consistent, RAPIDS grouped them into 2 `UNIFIED` sleep levels: `awake` (`CLASSIC`: `awake` and `restless`; `STAGES`: `wake`) and `asleep` (`CLASSIC`: `asleep`; `STAGES`: `deep`, `light`, and `rem`).
|`[SLEEP_TYPES]` | Types of sleep to be included in the feature extraction computation. Fitbit provides 2 types of sleep: `main`, `nap`.
|countepisode`[LEVEL][TYPE]` |episodes |Number of `[LEVEL][TYPE]`sleep episodes. `[LEVEL]`is one of `[SLEEP_LEVELS]` (e.g. awake-classic or rem-stages) and `[TYPE]` is one of `[SLEEP_TYPES]` (e.g. main). Both `[LEVEL]`and `[TYPE]`can also be `all` when ``LEVELS_AND_TYPES_COMBINING_ALL`` is True, which groups all `CLASSIC`, `STAGE`, `UNIFIED` levels and both sleep types.
|sumduration`[LEVEL][TYPE]` |minutes |Total duration of all `[LEVEL][TYPE]`sleep episodes. `[LEVEL]`is one of `[SLEEP_LEVELS]` (e.g. awake-classic or rem-stages) and `[TYPE]` is one of `[SLEEP_TYPES]` (e.g. main). Both `[LEVEL]`and `[TYPE]`can also be `all` when `LEVELS_AND_TYPES_COMBINING_ALL` is True, which groups all `CLASSIC`, `STAGE`, `UNIFIED` levels and both sleep types.
|maxduration`[LEVEL][TYPE]` |minutes | Longest duration of any `[LEVEL][TYPE]`sleep episode. `[LEVEL]`is one of `[SLEEP_LEVELS]` (e.g. awake-classic or rem-stages) and `[TYPE]` is one of `[SLEEP_TYPES]` (e.g. main). Both `[LEVEL]`and `[TYPE]`can also be `all` when `LEVELS_AND_TYPES_COMBINING_ALL` is True, which groups all `CLASSIC`, `STAGE`, `UNIFIED` levels and both sleep types.
|minduration`[LEVEL][TYPE]` |minutes | Shortest duration of any `[LEVEL][TYPE]`sleep episode. `[LEVEL]`is one of `[SLEEP_LEVELS]` (e.g. awake-classic or rem-stages) and `[TYPE]` is one of `[SLEEP_TYPES]` (e.g. main). Both `[LEVEL]`and `[TYPE]`can also be `all` when `LEVELS_AND_TYPES_COMBINING_ALL` is True, which groups all `CLASSIC`, `STAGE`, `UNIFIED` levels and both sleep types.
|avgduration`[LEVEL][TYPE]` |minutes | Average duration of all `[LEVEL][TYPE]`sleep episodes. `[LEVEL]`is one of `[SLEEP_LEVELS]` (e.g. awake-classic or rem-stages) and `[TYPE]` is one of `[SLEEP_TYPES]` (e.g. main). Both `[LEVEL]`and `[TYPE]`can also be `all` when `LEVELS_AND_TYPES_COMBINING_ALL` is True, which groups all `CLASSIC`, `STAGE`, `UNIFIED` levels and both sleep types.
|stdduration`[LEVEL][TYPE]` |minutes | Standard deviation duration of all `[LEVEL][TYPE]`sleep episodes. `[LEVEL]`is one of `[SLEEP_LEVELS]` (e.g. awake-classic or rem-stages) and `[TYPE]` is one of `[SLEEP_TYPES]` (e.g. main). Both `[LEVEL]`and `[TYPE]`can also be `all` when `LEVELS_AND_TYPES_COMBINING_ALL` is True, which groups all `CLASSIC`, `STAGE`, `UNIFIED` levels and both sleep types.
|ratiocount`[LEVEL]` |-|Ratio between the **count** of episodes of a single sleep `[LEVEL]` and the **count** of all episodes of all levels during both `main` and `nap` sleep types. This answers the question: what percentage of all `wake`, `deep`, `light`, and `rem` episodes were `rem`? (e.g., $countepisode[remstages][all] / countepisode[all][all]$)
|ratioduration`[LEVEL]` |-|Ratio between the **duration** of episodes of a single sleep `[LEVEL]` and the **duration** of all episodes of all levels during both `main` and `nap` sleep types. This answers the question: what percentage of all `wake`, `deep`, `light`, and `rem` time was `rem`? (e.g., $sumduration[remstages][all] / sumduration[all][all]$)
|ratiocountmain |- |Ratio between the **count** of all `main` episodes (independently of the levels inside) divided by the **count** of all `main` and `nap` episodes. This answers the question: what percentage of all sleep episodes (`main` and `nap`) were `main`? We do not provide the ratio for `nap` because is complementary. ($countepisode[all][main] / countepisode[all][all]$)
|ratiodurationmain |- |Ratio between the **duration** of all `main` episodes (independently of the levels inside) divided by the **duration** of all `main` and `nap` episodes. This answers the question: what percentage of all sleep time (`main` and `nap`) was `main`? We do not provide the ratio for `nap` because is complementary. ($sumduration[all][main] / sumduration[all][all]$)
|ratiocount`[TYPE]`within`[LEVEL]` |- |Ratio between the **count** of episodes of a single sleep `[LEVEL]` during `main` sleep divided by the **count** of episodes of a single sleep `[LEVEL]` during `main`**and**`nap`. This answers the question: are `rem` episodes more frequent during `main` than `nap` sleep? We do not provide the ratio for `nap` because is complementary. ($countepisode[remstages][main] / countepisode[remstages][all]$)
|ratioduration`[TYPE]`within`[LEVEL]` |- |Ratio between the **duration** of episodes of a single sleep `[LEVEL]` during `main` sleep divided by the **duration** of episodes of a single sleep `[LEVEL]` during `main`**and**`nap`. This answers the question: is `rem` time more frequent during `main` than `nap` sleep? We do not provide the ratio for `nap` because is complementary. ($countepisode[remstages][main] / countepisode[remstages][all]$)
|ratiocount`[LEVEL]`within`[TYPE]` |-|Ratio between the **count** of episodes of a single sleep `[LEVEL]` and the **count** of all episodes of all levels during either `main` or `nap` sleep types. This answers the question: what percentage of all `wake`, `deep`, `light`, and `rem` episodes were `rem` during `main`/`nap` sleep time? (e.g., $countepisode[remstages][main] / countepisode[all][main]$)
|ratioduration`[LEVEL]`within`[TYPE]` |-|Ratio between the **duration** of episodes of a single sleep `[LEVEL]` and the **duration** of all episodes of all levels during either `main` or `nap` sleep types. This answers the question: what percentage of all `wake`, `deep`, `light`, and `rem` time was `rem` during `main`/`nap` sleep time? (e.g., $sumduration[remstages][main] / sumduration[all][main]$)
1. Deleting values from `[SLEEP_LEVELS]` or `[SLEEP_TYPES]` will only change the features you receive from `[LEVELS_AND_TYPES]`. For example if `STAGES` only contains `[rem, light]` you will not receive `countepisode[wake|deep][TYPE]` or sum, max, min, avg, or std `duration`. These values will not influence `RATIOS` or `ROUTINE` features.
2. Any `[LEVEL]` grouping is done within the elements of each class `CLASSIC`, `STAGES`, and `UNIFIED`. That is, we never combine `CLASSIC` or `STAGES` types to compute features when `LEVELS_AND_TYPES_COMBINING_ALL` is True or when computing `RATIOS`.
