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
1.79 (1.16–2.75)
0.008