The Spine Journal · 2015 · 67 citations · 26 references
MedicineOrthopaedic SurgeryOrthopedic SurgeryNeoplasiaSpine SurgeryLumbar Spine SurgerySpinal AssessmentSpinal DeformitySpinal DisordersSpinal StabilitySpine DisordersCervical Spine InstabilitySegmental InstabilitySpinal Instability Neoplastic ScoreSpinal NeoplasiaVertebral Instability
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The Measurement of Observer Agreement for Categorical Data
J. Richard Landis, Gary G. Koch · Biometrics · 1977 · 78.9K citations · Full text