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Table 2 Intra- and inter-observer reliability

From: Reliability and development of a new classification of lumbosacral spondylolisthesis

  Intra-observer reliability Inter-observer reliability
  % agreement Kappa % agreement Kappa
Spondylolisthesis type 76.7% 0.72 57.0% 0.49
Slip grade 97.1% 0.94 95.2% 0.90
Degree of dysplasia 85.0% 0.69 72.2% 0.43
Sacro-pelvic balance 88.8% 0.85 77.2% 0.69