Table 4

Correlation of smoking variables with the blood pressure of smokers (SBP, DBP, MAP)

R valueP valueR valueP valueR valueP value
 Smoking duration (years)0.251<0.001†0.234<0.001†0.216<0.001†
Brinkman Index0.1750.001*0.1390.011*0.1460.007*
BMI (kg/m2)0.1880.001*0.369<0.001†0.324<0.001†
FeNO (ppb)−0.1330.015*−0.370.498−0.0750.173
eCO ppm0.0430.432−0.030.5040.0010.989
  • Spearman correlation.

  • *p<0.05.

  • †p<0.001.

  • BMI, body mass index; DBP, diastolic blood pressure; eCO, exhaled breath carbon monoxide; FeNO, fractional exhaled nitric oxide; MAP, mean arterial pressure; SBP, systolic blood pressure.