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Table 4 Standardized response means (SRM) for SIS and SSS components

From: Spondyloarthritis Research Consortium of Canada sacroiliac joint inflammation and structural scores: change score reliability and recalibration utility in children

Component

All raters

Mean (range)

SPARCC developers

Inflammation

0.93 (0.9–0.95)

0.91

Backfill

0.55 (0.35–0.96)

0.38

Fat metaplasia

0.36 (0.34–0.47)

0.30

Sclerosis

0.70 (0.57–0.88)

0.67

Erosion

0.96 (0.7–1.39)

0.78

Ankylosis

0.28 (0.24–0.31)

0.25

  1. Legend: An SRM of < 0.2 was considered a trivial effect, 0.2–0.5 small effect, 0.5–0.8 moderate effect, and > 0.8 large effect [12]
  2. SIS sacroiliac joint inflammation score, SSS sacroiliac joint structural score