Table 1.

Group mean differences in the BP variables between high and normal SR days

Variable	Enhanced SR Daysm			Normal SR Daysn			Student's t-test
	Mean	SDo	N	Mean	SD	N	t	df	p
SBPa	128.7	17.0	112	131.6	17.8	112	−2.691	111	.008
DBPb	79.3	10.4	112	81.2	11.1	112	−2.788	111	.006
HRc	71.5	8.0	112	72.1	8.2	112	−1.095	111	NS
MAPd	95.8	12.2	112	98.0	12.9	112	−2.860	111	.005
LOG_PPe	1.7	0.1	112	1.7	0.1	112	−1.564	111	NS
DPf	92.9	16.3	112	95.3	17.3	112	−2.127	111	.036
SBP_SDg	18.5	5.3	112	17.5	5.1	112	1.688	111	NS
DBP_SDh	14.5	4.5	112	14.3	4.4	112	.540	111	NS
HR_SDi	11.4	3.3	112	9.9	3.2	112	4.406	111	<.001
MAP_SDj	14.6	4.2	112	14.2	4.2	112	1.027	111	NS
PP_SDk	13.5	5.4	112	13.1	4.7	112	.746	111	NS
DP_SDl	22.9	6.5	112	20.2	5.6	112	3.954	111	<.001

^aNote. Systolic blood pressure.

^bDiastolic blood pressure.

^cHeart rate.

^dMean arterial pressure.

^eLog-transformed power pressure.

^fDouble product.

^gCircadian variation (standard deviation) in systolic blood pressure.

^hCircadian variation (standard deviation) in diastolic blood pressure.

ⁱCircadian variation (standard deviation) in heart rate.

^jCircadian variation (standard deviation) in mean arterial pressure.

^kCircadian variation (standard deviation) in pulse pressure.

^lCircadian variation (standard deviation) in double product.

^mDays with enhanced Schumann resonance signals (SR>0.697 pT).

ⁿDays with normal Schumann resonance signals (SR = <0.697 pT).

^oStandard deviation.