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Table 2 The Crobach’s α, and ICC for the low back pain scales

From: A comparison between the low back pain scales for patients with lumbar disc herniation: validity, reliability, and responsiveness

  Number of item Crobach’s α ICC
JOABPEQ
 Q1 Low back pain 4 0.494 0.751
 Q2 Lumbar function 6 0.768 0.809
 Q3 Walking ability 5 0.741 0.812
 Q4 Social life function 4 0.701 0.832
 Q5 Mental health 7 0.879 0.866
NPRS 1 / 0.991
ODI 10 0.828 0.871
RMDQ 24 0.807 0.855
SF-36 PCS 21 0.774 0.896
SF-36 MCS 14 0.802 0.843
  1. ICC intraclass correlation coefficient, JOABPEQ Japanese Orthopaedic Association Back Pain Evaluation Questionnaire, NPRS Numerical Pain Rating Scale, ODI Oswestry Disability Index, RMDQ Roland-Morris Disability Questionnaire, SF-36 Short Form Health Survey, PCS Physical Component Summary score, MCS Mental Component Summary score