Settings

The following settings can be adjusted for PALanalysis:

validation algorithm

Adjustable criteria for the validation algorithm

Wear time protocol:

  • 24 hour wear – allows 4 hours of non-wear per day
  • 14 hour waking wear day – allow 10 hours of non-wear per day
  • 10 hour wear day – allow 14 hours of non-wear per day

classification algorithm

The classification algorithm can be selected and parameters adjusted.

VANE
The standard PAL analysis algorithm. Classifies the data into 3 event types – non-upright, upright and stepping.

Adjustable parameters:

  • minimum non-upright period – for free living data in adult populations, the default value of 10 seconds is recommended
  • minimum upright period – for free living data in adult populations, the default value of 10 seconds is recommended

CREA
Extends the standard PAL analysis algorithm to provide detection of non-wear and classification of non-upright time into lying (primary and secondary) and sitting. Seated transport and cycling classification are applied. Upright correction for intermediate sitting angles is also applied.

Adjustable parameters:

  • minimum non-upright period – for free living data in adult populations, the default value of 10 seconds is recommended
  • minimum upright period – for free living data in adult populations, the default value of 10 seconds is recommended

Wear correction

With ‘Auto-correct inverted wear’ selected, data files where the device was worn upside down will be automatically corrected.

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