Table 1. Parameters of linear regression analysis of the QT-RR relationship of the eleven mice studied in diurnal and nocturnal periods.

Mouse/Period	Slope	Diff	r	Stats
1 diurnal   nocturnal	0.0006	46.2	0.002	ns
	−0.015	42.2	0.037	*
2 diurnal   nocturnal	−0.014	49.3	0.032	*
	−0.0057	41.3	0.013	ns
3 diurnal   nocturnal	0.0227	40.2	0.089	*
	0.023	33.0	0.045	*
4 diurnal   nocturnal	0.0126	44.8	0.044	*
	−0.0023	45.9	0.002	ns
5 diurnal   nocturnal	0.0082	44.5	0.020	*
	0.0455	39.1	0.067	*
6 diurnal   nocturnal	−0.1518	58.8	0.610	*
	−0.1550	60.8	0.637	*
7 diurnal   nocturnal	0.0268	40.0	0.093	*
	0.0552	40.4	0.160	*
8 diurnal   nocturnal	0.0125	42.7	0.054	*
	0.0306	40.2	0.143	*
9 diurnal   nocturnal	−0.0012	43.8	0.003	ns
	0.1548	27.2	0.419	*
10 diurnal   nocturnal	−0.0173	47.7	0.089	*
	−0.0042	41.5	0.060	*
11 diurnal   nocturnal	−0.0043	49.9	0.020	*
	0.0069	44.0	0.036	*

The linear regression being calculated being: QTr = slope *RR + Diff. r is the Pearson correlation parameter and stats indicates the significance of the correlation. *p < 0.05. ns: non significant.