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. 2021 Jun 23;8:156. doi: 10.1038/s41597-021-00937-4

Table 1.

Metadata variables, as they appear in the JSON files.

Name Mandatory Range of possible values Description
datetime Yes UTC date and time in ISO 8601 format Timestamp of the received recording.
cough_detected Yes Floating point in the interval [0, 1] Probability that the recording contains cough sounds, according to the automatic detection algorithm described in the Methods section.
SNR Yes Floating point in the interval [0, ∞) An estimation of the signal-to-noise ratio of the cough recording.
latitude No Floating point value Self-reported latitude geolocation coordinate with reduced precision.
longitude No Floating point value Self-reported longitude geolocation coordinate with reduced precision.
age No Integer value Self-reported age value.
gender No {female, male, other} Self-reported gender.
respiratory_condition No {True, False} The patient has other respiratory conditions (self-reported).
fever_muscle_pain No {True, False} The patient has fever or muscle pain (self-reported).
status No {COVID, symptomatic, healthy} The patient self-reports that has been diagnosed with COVID-19 (COVID), that has symptoms but no diagnosis (symptomatic), or that is healthy (healthy).
expert_labels_{1,2,3} No JSON dictionary with the manual labels from expert 1, 2 or 3 The expert annotation variables are described in Table 4.