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. 2024 Mar 27;12:e52192. doi: 10.2196/52192

Table 5. Sleep stage–specific degree of agreement according to American Academy of Sleep Medicine standards [38].

Stage Agreement (%) Cohen κ
Overall 81 0.7505
Wake 95.6 0.4608
REMa 97.5 0.9054
N3b 93.8 0.7285
N2c 86.5 0.7188
N1d 90.1 0.4608
a

REM: rapid eye movement.

b

N3: stage 3 non-REM sleep.

c

N2: stage 2 non-REM sleep.

d

N1: stage 1 non-REM sleep.