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Table 3 Inter-rater reliability of the SCAR scale: Spearman’s correlation analyses

From: The use of the Scar Cosmesis Assessment and rating scale to evaluate the cosmetic outcomes of totally thoracoscopic cardiac surgery

SCAR parameter Correlation coefficient p
Scar spread 0.76 P<0.01
Erythema 0.72 P<0.01
Dyspigmentation 0.81 P<0.01
Track marks or suture marks 0.75 P<0.01
Hypertrophy/atrophy 0.77 P<0.01
Overall impression 0.82 P<0.01
Itch 1.00 P<0.01
Pain 1.00 P<0.01
Overall scores 0.83 P<0.01
  1. Correlation coefficients: 0–0.20 = “week”; 0.21–0.40 = “fair”; 0.41–0.60 = “moderate”; 0.61–0.80 = “strong” reliability; 0.81–1.00 = “strongly” reliability [12]