Table 3.

Bias and limits of agreement for TST, time in light, deep, and REM sleep for 4-stage classification and the four models analyzed in this paper.

Model	Measure	Device	Reference	Bias	LOA.Lower	LOA.Upper
ACC	TST (min)	429.49 (61.05)	430.66 (61.12)	16.23 + −0.04 x ref	bias − 2.46(16.96 + −0.01 x ref)	bias + 2.46(16.96 + −0.01 x ref)
ACC	Light (min)	269.78 (71.24)	247.31 (45.3)	90.71 + −0.28 x ref	bias − 2.46(24.26 + 0.11 x ref)	bias + 2.46(24.26 + 0.11 x ref)
ACC	Deep (min)	97.45 (59.24)	93.34 (34.19)	4.11 (45.55)	−85.16	93.38
ACC	REM (min)	62.26 (35.36)	90.01 (26.24)	34.95 + −0.7 x ref	bias − 67.53	bias + 67.53
ACC+T	TST (min)	430.1 (61)	430.66 (61.12)	14.98 + −0.04 x ref	bias − 2.46(18.51 + −0.02 x ref)	bias + 2.46(18.51 + −0.02 x ref)
ACC+T	Light (min)	276.39 (64.67)	247.31 (45.3)	101.27 + −0.29 x ref	bias − 2.46(29.01 + 0.07 x ref)	bias + 2.46(29.01 + 0.07 x ref)
ACC+T	Deep (min)	89.72 (53.45)	93.34 (34.19)	−3.62 (41.93)	−85.8	78.56
ACC+T	REM (min)	63.98 (32.59)	90.01 (26.24)	31.86 + −0.64 x ref	bias − 61.18	bias + 61.18
ACC+T+HRV	TST (min)	431.2 (60.48)	430.66 (61.12)	15.49 + −0.03 x ref	bias − 2.46(18.54 + −0.02 x ref)	bias + 2.46(18.54 + −0.02 x ref)
ACC+T+HRV	Light (min)	249.12 (48.06)	247.31 (45.3)	72.1 + −0.28 x ref	bias − 2.46(20.61 + 0.03 x ref)	bias + 2.46(20.61 + 0.03 x ref)
ACC+T+HRV	Deep (min)	90.69 (40.12)	93.34 (34.19)	21.61 + −0.26 x ref	bias − 2.46(28.47 + −0.04 x ref)	bias + 2.46(28.47 + −0.04 x ref)
ACC+T+HRV	REM (min)	91.39 (25.24)	90.01 (26.24)	47.76 + −0.52 x ref	bias − 2.46(11.74 + 0.07 x ref)	bias + 2.46(11.74 + 0.07 x ref)
ACC+T+HRV+C	TST (min)	432 (60.34)	430.66 (61.12)	16.27 + −0.03 x ref	bias − 2.46(16.02 + −0.02 x ref)	bias + 2.46(16.02 + −0.02 x ref)
ACC+T+HRV+C	Light (min)	249.31 (48.24)	247.31 (45.3)	58.1 + −0.23 x ref	bias − 65	bias + 65
ACC+T+HRV+C	Deep (min)	90.43 (35.54)	93.34 (34.19)	26.85 + −0.32 x ref	bias − 52.63	bias + 52.63
ACC+T+HRV+C	REM (min)	92.26 (26.19)	90.01 (26.24)	42.83 + −0.45 x ref	bias − 2.46(10.58 + 0.08 x ref)	bias + 2.46(10.58 + 0.08 x ref)