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. 2008 Apr 15;4(2):105–110.

Table 2.

Sleep-Stage Analysis

Characteristic Mean ± SD Range
TST, min 225.1 ± 69.9 124–402
Sleep efficiency, % 76 ± 15.6 30–100
NREMa 89.2 ± 10.1 57–100
REMa 10.9 ± 10.2 0–43
a

NREM (non-rapid eye movement) and rapid eye movement (REM) sleep are shown as a percentage of total sleep time (TST).