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. 2022 Feb 1;18(2):393–402. doi: 10.5664/jcsm.9576

Table 5.

Correlation between PSG parameters for in-home study.

PSG Parameter n Correlation (κ) P
Arousals 47 0.360 .013
RDI/REI 47 0.887 < .001
Stage 1 (%) 43 0.734 < .001
Stage 2 (%) 43 0.615 < .001
SWS (%) 43 0.594 < .001
REM (%) 45 0.303 .043
Efficiency (%) 47 –0.122 .413

Correlation between PSG parameters when comparing T1PSG and T2PSG in the in-home study. PSG = polysomnography, RDI = respiratory disturbance index, REI = respiratory event index, REM = rapid eye movement, SWS = slow wave sleep, T1PSG = type 1 polysomnography, T2PSG = type 2 polysomnography.