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Table 2 Characteristics and serum FSTL1 levels in the subjects investigateda.

From: Follistatin-like protein 1: a serum biochemical marker reflecting the severity of joint damage in patients with osteoarthritis

  HC OA Male HC Male OA Female HC Female OA
Number 63 168 29 48 34 120
Age (years)b 37 (29-47) 62 (54-69) 35 (31-43) 61 (54-72) 39 (29-52) 62 (54-69)
Disease duration (years)b - 1.0 (0.3-3.9) - 0.5 (0.2-3.0) - 1.0 (0.5-5.0)
FSTL1 levels (μg/L)b 2.93 19.03 2.50 5.64 3.32 24.40
  (2.35-3.69) (7.41-27.98) (2.17-2.96) (3.81-8.75) (2.43-8.67) (15.65-31.17)
  1. aIncluded all subjects for whom serum samples were available. bExpressed as the median (25th to 75th percentile). FSTL1: follistatin-like protein 1; HC: healthy control individual; OA: osteoarthritis.