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Table 3 Results of Cox proportional hazards model comparing mortality in patients with severe COPD with relative lymphocyte count ≤20%

From: Relative lymphocyte count as an indicator of 3-year mortality in elderly people with severe COPD

Variable

Hazard ratio for relative lymphocytes count ≤20% (95% CI)

p-value

Adjusted for age and sex

1.81 (1.27–2.59)

0.0012

Adjusted for age, sex, smoking, body mass index, FEV1 (percent of predicted)

1.79 (1.22–2.62)

0.003

Adjusted for age, sex, smoking, body mass index, FEV1 (percent of predicted), FVC (percent of predicted), FEV1/FVC (percent), PaO2, PaCO2, pH, ischemic heart disease, history of myocardial infarction, congestive heart failure, heart rate, systolic and diastolic blood pressure.

1.56 (1.02–2.38)

0.04

  1. COPD chronic obstructive pulmonary disease, CI confidence interval, FEV1 forced expiratory volume in one second, FVC forced vital capacity, FEV1/FVC Tiffeneau, PaO2 partial arterial oxygen tension, PaCO2 partial arterial carbon dioxide tension