Table 1.

The characteristics of the subjects

	Smokers	Nonsmokers	p-value
Sex ratio female/male	13/4	13/4	ns
Age (year)	64 ± 2	64 ± 2	ns
BMI (kg m2)	26 ± 1	26 ± 1	ns
BP systolic (mmHg)	135 ± 5	125 ± 6	ns
BP diastolic (mmHg)	77 ± 3	68 ± 3	ns
Pulse (min)	72 ± 2	73 ± 3	ns
Skin temperature (°C)	28 ± 0.1	28 ± 0.2	ns

Notes: Two-tailed, unpaired t-test with Welch’s correction was used. Data are given as mean values ± SEM or ratio. n = 17 in each groups, ns = nonsignificant.