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Table 6 Factors associated with the presence and progression of ASD at 2-year follow-up

From: The association of cervical sagittal alignment with adjacent segment degeneration

Factors Comparison Non-ASD versus ASD Mild ASD versus ASD ASD negative progression versus ASD positive progression
OR 95% CI P value OR 95% CI P value OR 95% CI P value
Lordosis Per additional degree 0.97 0.94–1.00 0.057 0.97 0.93–1.01 0.133 0.97 0.93–1.01 0.089
SVA Per additional mm 1.02 0.99–1.05 0.269 1.03 0.99–1.06 0.120 1.01 0.98–1.05 0.421
OCI Per additional degree 1.08 1.04–1.13 < 0.001* 1.11 1.06–1.16 < 0.001* 1.05 1.01–1.09 0.023*
T1 slope Per additional degree 0.99 0.96–1.02 0.490 1.00 0.96–1.04 0.897 0.97 0.93–1.01 0.14
  1. ASD adjacent segment degeneration, OR odds ratio, SVA sagittal vertical axis, OCI occipito-cervical inclination
  2. *P < 0.05
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