Software
© 2016 Pulsar Informatics, Inc.
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Time In Bed (TIB)
– The sum of TIB for all intervals associated with the
day. A value of 0 if there are no intervals.
Sleep Efficiency
– The DailyTST/(DailyTIB – DailyUnknown) * 100. A value
of NaN if there are no intervals.
Awakenings
– The sum of awakenings for all intervals associated with
the day. A value of NaN if there are no intervals.
Avg. Awakenings
– The average duration of all awakenings for all
intervals associated with the day. A value of NaN if there are no
intervals.
Bed time
– The In Bed time of the
longest
interval associated with the
day. In the case where the longest interval occurs in two or more
intervals having the same length, the interval occurring first is used. A
value of NaN if there are no intervals.
Get Up time
– The Out of bed time of the
longest
interval associated
with the day. In the case where the longest interval occurs in two or
more intervals having the same length, the interval occurring first is
used. A value of NaN if there are no intervals.
Note that the method of grouping intervals into days based on the start time makes
it possible for values for some of the metrics to have values greater than 24h.
When a day has no sleep intervals, the metrics will either have a value of 0, or be
treated as not a number (NaN).
Summary statistics
Summary statistics are calculated for the Min, Average, and Max values of the daily
metrics over an entire worksheet data set. The summary values are calculated based
on the set of values for each
daily
metric, and are not recalculated using each
interval. In cases where the daily metric has a NaN value, it is ignored in the
statistical operation.
The Min, Average, and Max statistics for metrics that have time-of-day values (Bed
Time and Get Up Time) are calculated based on a linear scale starting from the Day
Start Time.
