Table 2 Data recorded by the WD Everion®.

From: Vital signs in pediatric oncology patients assessed by continuous recording with a wearable device, NCT04134429

Recorded data

Unit

Range

Quality score

Description

Core temperature

°C

21–46

Core temperature quality

Temperature of the body

Galvanic skin response

kOhm

0–5

A measurement of electrodermal activity as an index of sympathetic nervous system activity – sensitive measure for emotional arousal (Biofourmis. (https://support.biofourmis.com/hc/en-us/articles/213838709-Electrodermal-activity-galvanic-skin-response, 2020))

Health score

0–100%

Shows moment-to-moment balance between bodily stress and recovery. Stress during the day = body resources deplete, leisure time (mostly during night sleep) = resources replenish.

In perfect balance, one would arrive at the same health level after one full wake-sleep cycle (Biofourmis. (https://support.biofourmis.com/hc/en-us/articles/360011425079-Behavior-Metrics, 2020))

Heart rate

bpm

30–240

Heart rate/skin blood perfusion quality

How many heartbeats a person has per minute

Heart rate variability

ms

0–255

Heart rate variability quality

Interval variation between two heart beats

Oxygen saturation

%

60–100

Oxygen saturation quality

Oxygen saturation in the arterial blood

Respiration rate

bps

2–60

Respiration rate quality

How many breaths a person takes per minute

Skin temperature

°C

0–60

Temperature of the skin

Skin blood perfusion

0–5

Heart rate/skin blood perfusion quality

Blood flow to the capillary bed