Two-Channel Portable Biopotential Recording System Can Detect REM Sleep Behavioral Disorder: Validation Study with a Comparison of Polysomnography
Table 2
Difference of sleep parameters between polysomnography and the portable EEG/EOG recording system.
PSG
Portable EEG/EOG recording system
Mann–Whitney
Effect size
Spearman rank correlation
Mean
SD
Mean
SD
Cohen d
Correlation coefficient
TST (min)
381.8
58.9
394.1
103.9
0.753
0.15
0.693
0.167
TIB (min)
644.1
56.8
673
65.6
0.371
0.47
0.568
0.24
SPT (min)
507.2
95.8
508
92.8
1
0.01
0.01†
0.833
SOL (min)
89
81.3
94.7
77.2
0.793
0.07
0.001†
0.929
WASO (times)
30.7
9.7
25.5
12.3
0.246
0.47
0.003†
0.896
WASO (min)
117.8
50.1
136
69.4
0.6
0.3
0.058
0.69
WASO (%)
29.9
10.3
39.8
26.4
0.674
0.49
0.002†
0.905
SE (%)
60.6
7.8
55.5
11.7
0.345
0.51
0.015†
0.81
REM (%)
6.7
7.7
13.3
10.9
0.093
0.70
<0.001†
0.976
N1 (%)
10.4
3.7
8.8
2.9
0.401
0.48
0.086
0.643
N2 (%)
52.7
6.4
55.9
10.5
0.401
0.37
0.12
0.595
N3 (%)
25
6.3
19.5
4.3
0.036†
1.02
0.289
0.429
RWA (%)
5
6
1.9
1.8
0.293
0.70
0.435
0.323
RWA/total SREM (%)
37.3
36.1
17.1
13.6
0.431
0.74
0.028†
0,762
TST: total sleep time; TIB: time in bed; SPT: sleep period time; WASO: wake time after sleep onset; SOL: sleep onset latency; SE: sleep efficiency; EEG/EOG: electroencephalography/electrooculography, †: .
