TABLE 3.

Accuracy of detecting normal and abnormal RR intervals.

	Either	Both	SD	SD-12 h	SD-24 h
M 1	0.96 – 0.97	0.89 – 0.92	0.81 – 0.91	0.85 – 0.88	0.79 – 0.94
M 2	0.94 – 0.98	0.85 – 0.91	0.91 – 0.98	0.88 – 0.93	0.83 – 0.93
M 3	0.92 – 0.99	0.91 – 0.97	0.88 – 0.92	0.84 – 0.93	0.81 – 0.92
R 1	0.93 – 0.98	0.93 – 0.98	0.91 – 0.97	0.91 – 0.96	0.87 – 0.93
R 2	0.93 – 0.95	0.93 – 0.95	0.90 – 0.94	0.87 – 0.93	0.83 – 0.90
R 3	0.98 – 0.99	0.93 – 0.96	0.88 – 0.92	0.83 – 0.92	0.80 – 0.88

SD, SD generated from the 20,000 RR intervals used for ROC analysis. SD-12 h, SD generated from the 12 h data of the same dark-light cycle. SD-24 h, SD generated from the whole 24-h data. M1, mouse recording 1; M2, mouse recording 2; M3, mouse recording 3; R1, rat recording 1; R2, rat recording 2; R3, rat recording 3.