Analysis of Individual Variations in Autonomic Responses to Urban and Forest Environments

Table 2

Descriptive statistics of the distribution of heart rate variability ().

	Urban	Forest	Urban-forest	Urban	Forest	Urban-forest
Mean	5.54	6.02	−0.48	1.48	1.32	0.16
Median	5.66	6.14	−0.45	1.51	1.31	0.16
SD	0.92	1.01	0.70	0.77	0.82	0.71
5th percentile	3.81	4.41	−1.57	0.16	0.00	−0.92
95th percentile	6.9	7.29	0.56	2.70	2.66	1.19
Skewness	−1.20	−1.10	−0.92	−0.21	0.32	−0.46
Kurtosis	3.42	2.97	8.21	0.47	0.97	4.24

SD: standard deviation; skewness: a measure of symmetry of distribution; Kurtosis: a measure of whether the distribution curve is peaked (positive) or flat (negative) relative to the normal distribution.