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Table 1 Intertester-reliability of measuring length and position variables

From: Determination of thoracic and lumbar spinal processes by their percentage position between C7 and the PSIS level

Variable ICC, 1,1 95% CI of ICC Mean difference (cm) 95% LA (cm) SEM (cm)
C7-PSIS distance 0.991 0.978 to 0.996 < 0.1 −0.5 to 0.6 0.2
T4 0.967 0.922 to 0.986 <0.1 −0.4 to 0.5 0.2
T7 0.981 0.955 to 0.992 0.1 −0.9 to 1.0 0.3
T10 0.988 0.972 to 0.995 0.1 −0.6 to 0.7 0.2
L1 0.99 0.976 to 0.996 0.1 −0.4 to 0.6 0.2
L4 0.999 0.998 to 1 0.1 −0.4 to 0.6 0.2
  1. Table1 (ICC = Intraclass Correlation Coefficient, 95% CI = 95% Confidence Interval, 95% LA = 95% Limits of agreement), SEM = Standard error of the measurement, C7-PSIS distance = distance between spinal process of the seventh cervical vertebrae and the posterior superior iliac spine, T4, T7, T10, L1 and L4 = spinal process of the fourth, seventh and tenth thoracic and first and fourth lumbar vertebrae.