Research Article

Measurements of Epidural Space Depth Using Preexisting CT Scans Correlate with Loss of Resistance Depth during Thoracic Epidural Catheter Placement

Table 2

Analysis result.

Anesthesiologists’ measurements versus radiologist’s measurement
Anesthesiologist 1Anesthesiologist 2Anesthesiologist 3

Measurements within 1 cm98%98%100%
Measurements within 0.5 cm98%96%86%
Measurements were the same22%34%18%
Root mean squared error2.52.33.7
Intraclass correlation coefficient0.980.990.97