Table 1.

Estimation of the different sleep stages for each studied subject.

Age	Stages		Data number								Average
			1	2	3	4	5	6	7	8
0–2	Deep	Accuracy	73.7	78.1	78.9	73.0	71.5	80.4	–	–	75.9 ± 3.7
		Sensitivity	31.8	66.5	16.3	23.8	58.3	66.4	–	–	43.8 ± 22.5
		Specificity	19.9	37.3	21.5	35.6	37.5	50.4	–	–	33.7 ± 11.4
	Light	Accuracy	60.8	62.9	47.9	49.8	54.8	62.9	–	–	56.5 ± 6.7
		Sensitivity	36.6	34.2	37.3	38.3	26.1	34.4	–	–	34.5 ± 4.4
		Specificity	60.4	53.9	44.0	37.5	51.2	63.1	–	–	51.7 ± 9.7
	REM	Accuracy	79.8	75.6	60.1	70.6	64.9	72.8	–	–	70.6 ± 7.2
		Sensitivity	85.0	70.6	50.4	47.5	61.1	65.4	–	–	63.3 ± 13.8
		Specificity	61.7	59.1	42.2	54.8	43.6	61.9	–	–	53.8 ± 8.9
	Wake	Accuracy	93.3	86.1	95.4	83.2	95.2	88.5	–	–	90.3 ± 5.1
		Sensitivity	65.2	40.8	96.5	44.6	28.6	83.3	–	–	59.8 ± 26.4
		Specificity	75.3	54.0	49.1	14.5	36.4	3.9	–	–	38.9 ± 26.4
3–6	Deep	Accuracy	80.8	82.2	82.6	79.0	73.8	78.4	76.1	84.4	79.5 ± 3.3
		Sensitivity	69.7	71.4	67.6	70.4	54.3	65.5	51.4	75.2	66.5 ± 6.3
		Specificity	52.8	57.4	54.4	45.5	58.7	46.3	58.4	68.8	52.5 ± 5.5
	Light	Accuracy	58.5	57.5	57.2	55.0	51.0	49.4	58.7	50.5	54.8 ± 3.8
		Sensitivity	33.5	45.6	29.2	29.1	34.4	20.5	51.9	16.7	32.0 ± 8.3
		Specificity	62.2	66.7	60.3	52.4	33.1	43.6	45.6	44.3	53.1 ± 12.7
	REM	Accuracy	72.1	71.5	65.1	68.5	63.5	60.2	68.7	58.5	66.8 ± 4.7
		Sensitivity	71.8	53.4	73.9	67.7	27.4	58.9	39.4	67.1	58.8 ± 17.3
		Specificity	45.5	39.9	44.5	49.5	30.0	34.0	41.6	29.1	40.6 ± 7.4
	Wake	Accuracy	97.3	95.1	98.6	98.8	96.5	97.4	99.1	97.2	97.3 ± 1.4
		Sensitivity	89.7	75.0	85.1	74.6	97.8	71.4	91.2	66.7	82.3 ± 10.3
		Specificity	76.1	9.2	78.4	95.7	62.9	89.6	96.3	73.9	68.6 ± 31.2