Table 2 Patient demographics for the discovery cohort.

From: A novel biomarker of MMP-cleaved cartilage intermediate layer protein-1 is elevated in patients with rheumatoid arthritis, ankylosing spondylitis and osteoarthritis

 

Healthy (N = 13)

Rheumatoid arthritis (N = 18)

Ankylosing spondylitis (N = 14)

Osteoarthritis (N = 8)

p-value

Age (years)

45.02 (8.97)

35.72 (3.30)

35.71 (3.10)

69.88 (3.31)

< 0.001

Sex, male

6 (46.2%)

9 (50.0%)

8 (57.1%)

4 (50.0%)

0.952

BMI

–

24.11 (1.80)

22.63 (1.70)

27.64 (3.66)

0.594

Ethnicity

 Unknown

–

8

8

–

 

 Caucasian

12 (92.3%)

10 (100.0%)

6 (100.0%)

8 (100.0%)

 Hispanic

1 (7.7%)

0 (0.0%)

0 (0.0%)

0 (0.0%)

CILP-M (ng/mL)

0.76 (0.22)

1.85 (0.75)

1.97 (0.99)

1.92 (0.85)

< 0.001

  1. Categorical variables are written as number (percentage), while continuous variables are mean (standard deviation). Kruskal–Wallis rank test was used to compare differences among the groups.
  2. BMI body mass index.
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