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Table 4 The intra-observer error analysis in this study (n =100)

From: The analysis of sacrum and coccyx length measured with computerized tomography images depending on sex

Parameters TEM rTEM R
ASL 0.13 1.24 0.98
PSL 0.15 1.36 0.97
ASCL 0.15 1.20 0.99
PSCL 0.13 0.97 0.99
ASC 0.20 1.71 0.95
PSC 0.23 1.97 0.95
ACC 0.19 5.45 0.91
PCC 0.24 5.47 0.89
SA 0.47 2.34 0.98
CA 0.33 8.96 0.82
LTL-1 0.09 3.15 0.92
LTL-2 0.10 3.53 0.89
LTL-3 0.10 3.93 0.85
LTL-4 0.11 4.30 0.91
IFHR-1 0.10 7.52 0.79
IFHR-2 0.10 11.93 0.83
IFHR-3 0.09 9.70 0.76
IFHL-1 0.11 7.77 0.84
IFHL-2 0.09 11.10 0.78
IFHL-3 0.08 8.79 0.71
LRFA-S 0.12 1.07 0.96
S1-T 0.15 2.66 0.92
S1-S 0.09 3.07 0.95
ASW 0.12 1.08 0.98
  1. TEM technical error of measurement, rTEM relative technical error of measurement, R coefficient of reliability, ASL anterior sacral length, PSL posterior sacral length, ASCL anterior sacrococcygeal length, PSCL posterior sacrococcygeal length, ASC anterior sacral curvature length, PSC posterior sacral curvature length, ACC anterior coccygeal curvature length, PCC posterior coccygeal curvature length, SA sacral area, CA coccygeal area, LTL lengths of transverse lines, IFHR right interforaminal height, IFHL left interforaminal height, LRFA-S the distance between the left and right auricular surface, S1-S, S1-Tfirst. sacral vertebra sagittal and transverse length, ASW anterior sacral width