Table 5 Odds ratios and 95% confidence intervals for low quartile of FMD according to pack-years in never smokers and current smokers in men.

From: Smoking status and endothelial function in Japanese men

Pack-years

Unadjusted

OR (95% CI) P value

Adjusted*

OR (95% CI) P value

Never

1 (reference)

1 (reference)

Light

0 < Pack-years≦10

0.90 (0.59–1.36)

0.61

1.57 (0.99–2.51)

0.06

Moderate

10 < Pack-years≦20

0.72 (0.51–1.02)

0.06

1.01 (0.68–1.50)

0.97

Heavy

20 < Pack-years≦30

1.10 (0.82–1.49)

0.52

1.38 (0.97–1.96)

0.08

Excessive

30 < Pack-years

2.19 (1.69–2.83)

 < 0.001

1.95 (1.42–2.67)

 < 0.001

  1. FMD, flow-mediated vasodilation.
  2. Low quartile of FMD indicates less than 4.08%.
  3. *Adjusted also for age (≥ 65 years), body mass index, systolic blood pressure, low-density lipoprotein cholesterol, glucose, and year of recruitment.
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