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Table 4 Factors associated with length of hospital stay among patients hospitalized for an acute COPD exacerbation

From: Low immunoglobulin levels affect the course of COPD in hospitalized patients

Variable

Adjusted IRR (95% CI)

p

Age

1.00 (0.98–1.02)

0.888

Sex

 Male

 Female

Reference

0.82 (0.54–1.23)

0.338

IgM

 Normal

 Low

Reference

1.79 (1.16–2.75)

0.008

  1. Bold value denotes statistical significance at the p < 0.05 level
  2. IRR Incidence rate ratio compared to the reference category the ratio of expected length of hospital stay