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. Author manuscript; available in PMC: 2019 Mar 2.
Published in final edited form as: Spine (Phila Pa 1976). 1992 Feb;17(2):200–205. doi: 10.1097/00007632-199202000-00014

Table 6.

Errors in Manual and Computerized Methods

Graphical
Construction
Method
Computer-Assisted
Method
SD Mean SD Mean
L1–L2 1.0 8.0 1.21 8.2
L2–L3 1.1 10.9 0.75 11.8
L3–L4 0.5 13.1 0.63 12.5
L4–L5 0.7 16.5 1.33 16.7
Average 0.83 12.1 0.98 12.2

Note: Standard deviations and means of the angle of rotation (Rx) using the graphical construction method and computer-assisted method.