Group | Median (interquartile range), ng/ml |
---|---|
RA, n = 1270 | 1952.3 (1617.1 to 2340.0) |
All controls combined, n = 186 | 1688.1 (1423.3 to 2023.9) |
COPD, n = 59 | 1905.8 (1519.8 to 2224.2) |
Healthy controls, n = 127 | 1662.4 (1361.4 to 1917.1) |
↵* Group differences examined using the Mann-Whitney U test; p < 0.0001 for RA vs all controls combined; p = 0.0008 for COPD versus healthy controls; p = 0.54 for RA versus COPD. COPD: chronic obstructive pulmonary disease.