Table 3 Multivariate analysis of relationships among low tertiles of NID

From: Stair climbing activity and vascular function in patients with hypertension

 

Odds ratio (95% confidence interval); P value

Stair climbing

Unadjusted

Model 1

Model 2

Model 3

Model 4

No stairs

1 (reference)

1 (reference)

1 (reference)

1 (reference)

1 (reference)

2nd floor

0.37 (0.20–0.68); 0.001

0.32 (0.16–0.63); 0.001

0.29 (0.15–0.59); < 0.001

0.27 (0.13–0.56); < 0.001

0.28 (0.13–0.57); < 0.001

≥3rd floor

0.32 (0.19–0.56); < 0.001

0.41 (0.22–0.75); 0.004

0.46 (0.24–0.87); 0.02

0.41 (0.21–0.80); 0.009

0.42 (0.21–0.81); 0.01

  1. Model 1; adjusted for age, gender, body mass index, dyslipidemia, diabetes mellitus, current smoking.
  2. Model 2; adjusted for age, gender, body mass index, dyslipidemia, diabetes mellitus, current smoking, the prevalence of CVD.
  3. Model 3; adjusted for age, gender, body mass index, dyslipidemia, diabetes mellitus, current smoking, the prevalence of CVD, exercise time.
  4. Model 4: adjusted for age, gender, body mass index, dyslipidemia, diabetes mellitus, current smoking, the prevalence of CVD, exercise time, sitting time.
  5. The low tertile of NID indicates less than 7.9%.
  6. NID indicates nitroglycerine-induced vasodilation, CVD cardiovascular disease.
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