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Table 3 Descriptive analysis of the total cartilage thickness (TCT) [mm] of the ulnar, central, and radial thirds of the MCP, PIP, and DIP joints 2–5 in PsA patients. For each item, the mean ± standard deviation, the median, and the range (minimum and maximum) are presented. Each TCT represents the sum of the proximal and distal cartilage layers of each joint. Means were compared by one-way ANOVA and a post hoc Scheffé test. p values < 0.05 were considered significant and are given in bold

From: Proteoglycan loss in the articular cartilage is associated with severity of joint inflammation in psoriatic arthritis—a compositional magnetic resonance imaging study

TCT
   Overall MCP PIP DIP p value
Ulnar Mean 0.79 1.07 0.71 0.57 MCP vs. PIP < 0.001
MCP vs. DIP < 0.001
SD 0.33 0.30 0.23 0.22
Median 0.72 1.05 0.69 0.63
Minimum 0 0.5 0 0
Maximum 1.85 1.85 1.15 0.9
Central Mean 0.80 1.11 0.71 0.59 PIP vs. DIP 0.024
Ulnar vs. central 0.83
SD 0.35 0.31 0.26 0.21
Median 0.74 1.07 0.68 0.66
Minimum 0 0.62 0 0
Maximum 2.18 2.18 1.41 0.98
Radial Mean 0.77 1.08 0.69 0.55 Ulnar vs. radial 0.989
Radial vs. central 0.751
SD 0.32 0.25 0.23 0.21
Median 0.74 1.05 0.69 0.55
Minimum 0 0.55 0 0
Maximum 1.73 1.73 1.26 0.91