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Table 6 Inter- and intra-rater reproducibility as standard error of measurement (SEM), mean of differences (MD), beta value of linear regression on Bland-Altman analyses (B) and coefficient of repeatability (CR) of thoracic spine posture and mobility measurements

From: Intra- and inter-rater reliability of thoracic spine mobility and posture assessments in subjects with thoracic spine pain

Variable Inter-rater (n = 32) Intra-rater (n = 32)
  SEM MD Bc CR SEM MD Bc CR
Posture inspection while standinga 0.56 −1.00 −0.21 1.56 0.31 0.06 − 0.01 0.86
Posture inspection while sittinga 0.61 −0.69 −0.56 1.68 0.25 −0.03 − 0.08 0.69
Segmental mobility into flexionb 2.62 0.88 −0.69 7.27 1.16 −0.53 0.34 3.22
Segmental mobility into extensionb 3.26 1.91 −0.13 9.03 1.24 −0.50 −0.02 3.44
Posterior to anterior pressureb 1.89 1.44 −0.58 5.23 1.15 −0.22 0.28 3.20
Inclination of Th1–6 while standing (°) 2.43 −2.0 −0.26 6.73 2.10 −0.81 −0.15 5.80
Inclination of Th6–12 while standing (°) 2.67 0.47 −0.28 7.40 2.60 1.84 −0.29 7.20
Inclination of Th1–12 while standing (°) 3.18 −1.34 −0.25 8.81 3.09 1.34 −0.10 8.57
Inclination of Th1–6 while sitting (°) 2.66 −2.16 −0.15 7.37 2.76 −0.94 0.02 7.65
Inclination of Th6–12 while sitting (°) 3.92 1.28 −0.19 10.86 2.77 −0.97 −0.11 7.68
Inclination of Th1–12 while sitting (°) 3.87 −0.53 −0.17 10.72 3.62 −1.34 −0.18 10.03
C7-Th5 flexion mobility (tape, mm) 4.17 3.59 −0.75 11.59 2.87 0.72 −0.15 7.95
Schober (spine in neutral, mm) 16.08 −4.47 0.08 44.55 11.80 2.47 0.12 32.69
Schober (spine in flexion, mm) 5.47 2.41 −0.20 15.15 5.67 2.22 0.26 15.71
Schober (spine in extensio, mm) 10.53 −4.75 0.21 29.17 10.88 0.13 −0.03 30.13
Flexion mobility of Th1–6 while sitting (°) 4.86 1.69 0.88 13.46 3.24 1.06 0.17 8.97
Flexion mobility of Th6–12 while sitting (°) 5.27 4.22 0.94 14.59 5.43 1.91 0.62 15.03
Flexion mobility of Th1–12 while sitting (°) 6.13 −2.88 0.84 16.98 4.88 2.41 0.33 13.53
Extension mobility of Th1–6 while sitting (°) 6.12 0.59 0.04 16.95 7.90 −1.47 0.46 20.89
Extension mobility of Th6–12 while sitting (°) 3.95 5.97 0.29 10.95 5.10 −1.38 −0.15 14.14
Extension mobility of Th1–12 while sitting (°) 8.45 5.16 0.17 23.39 10.07 −1.38 0.42 27.89
  1. a Evaluated in three categories: decreased thoracic kyphosis (flat back), normal kyphosis or hyperkyphosis
  2. b Sum of all thoracic spine motion segments recorded as hypomobile
  3. c The Bland Altman plots for each item are presented in the additional electronic files of this study; none of the linear regression for proportional bias were statistically significant