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Table 2 Relative risk for progressions by tertiles of blood Cd

From: Association of blood cadmium concentration with chronic obstructive pulmonary disease progression: a prospective cohort study

Prognosis

Tertiles of blood Cd

P

Tertile 1 (< 0.367 ppm)

Tertile2 (0.367 ~ 1.102 ppm)

Tertile 3 (> 1.102 ppm)

Acute exacerbation (n)

2.7 ± 0.51

2.2 ± 0.45

4.7 ± 0.65

 < 0.001

Hospitalization (n)

1.3 ± 0.28

1.2 ± 0.23

3.7 ± 0.68

 < 0.001

Hospital stays (day)

2.6 ± 0.44

2.3 ± 0.36

4.8 ± 0.60

 < 0.001

Death (n)

15 (23.1)

13 (20.0)

25 (37.9)

0.048

  1. Age, sex, smoking status, smoking amount, comorbidities, inhaled therapy for COPD, and pulmonary function indices were adjusted. Bold values indicate statistical significance
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Respiratory Research

ISSN: 1465-993X

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