Hello everyone,
the MESA actigraphy scoring manual describes the detailed procedure to determine the reliability of the scoring (both for the main sleep episode and for the naps). The associated scoring, if I understood correctly, is the one reported in the actigraphy file itself under the column named "interval".
However, I fail to understand how to access the reliability of the scoring. It seems that this info is reported in the MESA QS form but I would like to know:
- whether the "interval" info reported in the actigraphy file is considered reliable or not;
- if I can access the reported reliability on a detected rest episode basis.
Thank you in advance for your help.
Best regards,
Grégory
Good questions - this sort of "reliability" was assessed for the beginning and end of every REST interval in the actigraphy scoring. The actigraphy scorer made a quick judgement about whether indicators (e.g., event marker from device button press, diary, light levels, activity levels) were reliable with one another and recorded these on the QS form.
whether the "interval" info reported in the actigraphy file is considered reliable or not
All of the REST intervals in the actigraphy files were deemed to be valid and usable by the scorer. If, for instance, a day of actigraphy had lots of non-wear time (particularly during a nighttime sleep window) then the day would be entirely excluded and you would not find an interval in the actigraphy file.
The "reliability" here is an assessment of how well the different indicators align (or don't). It is not a judgment on whether or not the interval itself is usable (or not).
if I can access the reported reliability on a detected rest episode basis
No, these reliability indicators (from QS form) were not included in the shared data package.