Table 5.

Confusion Matrices of Oura Sleep Staging by TIB Condition

			Oura
			Wake	Light Sleep	Deep Sleep	REM Sleep
PSG	Wake	6.5-Hour TIB	0.89(0.07)	0.05(0.04)	0.05(0.04)	0.01(0.02)
		8-Hour TIB	0.89(0.07)	0.05(0.04)	0.04(0.03)	0.02(0.02)
		9-Hour TIB	0.89(0.08)	0.05(0.05)	0.04(0.03)	0.02(0.02)
	Stage N1 + N2 Sleep	6.5-Hour TIB	0.13(0.05)	0.52(0.05)	0.25(0.08)	0.10(0.04)
		8-Hour TIB	0.13(0.05)	0.52(0.08)	0.25(0.07)	0.10(0.05)
		9-Hour TIB	0.13(0.06)	0.52(0.07)	0.23(0.07)	0.12(0.05)
	Stage N3 Sleep	6.5-Hour TIB	0.02(0.02)	0.18(0.12)	0.79(0.12)	0.01(0.02)
		8-Hour TIB	0.02(0.02)	0.13(0.08)	0.83(0.10)	0.02(0.02)
		9-Hour TIB	0.02(0.02)	0.17(0.10)	0.79(0.11)	0.02(0.03)
	REM Sleep	6.5-Hour TIB	0.18(0.16)	0.23(0.12)	0.06(0.07)	0.53(0.18)
		8-Hour TIB	0.17(0.09)	0.28(0.12)	0.04(0.04)	0.51(0.17)
		9-Hour TIB	0.18(0.13)	0.24(0.12)	0.05(0.05)	0.53(0.17)

Notes: Mean (standard deviation) of proportions, referenced to PSG, of each sleep stage classification. Classification accuracies for each sleep stage are highlighted in bold.

Abbreviations: REM, rapid eye movement; TIB, time in bed; TST, total sleep time; WASO, wake after sleep onset.