Table 3.

Correlation of the sequential nailfold blood velocity with other variables (n = 48).

All values are Pearson correlation coefficients. Fat mass was analyzed by bio-impedance analysis. BMI was calculated from body weight (kg)/height (m²).

V₁: nailfold capillary blood velocity before cigarette smoking, V₂: nailfold capillary blood velocity after 5 minutes of cigarette smoking, V₃: nailfold capillary blood velocity after 30 minutes of cigarette smoking, BMI: body mass index, WC: waist circumference, PD: average pack of the daily smoking, SY: total smoking years, PY: total pack-years calculated by PD × SY, ECO_0min: concentration of expiratory CO before cigarette smoking detected by micro smokerlyzer, ECO_5min: concentration of expiratory CO after 5 minutes of cigarette smoking detected by micro smokerlyzer, ECO_30min: concentration of expiratory CO after 30 minutes cigarette smoking detected by micro smokerlyzer, oxLDL: oxidized low density lipoprotein, ICAM-1: inter-cellular adhesion molecule-1, IL-6: interleukin-6.

^*Marked on the P-value < 0.05.