Table 3 Minute signals used as the source signals for feature extraction in the CDI model.
Signal name | Signal description |
|---|---|
Heart rate | 10% Trim mean average of beat to beat heart rate values |
Time domain heart rate variability | 10% Trim mean average of time domain heart rate variability |
Respiration rate | 10% Trim mean average of respiration rate |
Count of magnitude | Average of activity count using the 3-axis accelerometer vector magnitude |
Gross activity | Average of root mean squared of 3-axis accelerometer signal |
Magnitude of uni counts | Average of vector magnitude of 3-axis univariate accelerometer activity counts |
A-Fib percent | Percent of time classified as exhibiting atrial fibrillation or atrial flutter |
Sleep | Percent of time classified as sleeping |
Step count | Number of steps |
Tilt | 10% Trim mean of tilt angle of the torso (where 90 degrees is upright) |
Trailing activity | Average of gross activity after application of a 3 minute moving average filter |
Walk percent | Percent of time classified as ambulation (inclusive of walking and running) |
Skin temperature | Median skin temperature, in degrees celcius |
Activity residual | 10% Trim mean average of trailing activity residual |
Heart rate residual | 10% Trim mean average of heart rate residual |
Respiration rate residual | 10% Trim mean average of respiration rate residual |
MCI | 10% TrIm Mean Average of MCI (multivariate change index)[?] |
