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Table 3:

Index vertebral body kyphotic angulation correction

Levels (No.)Raw Data Change from Baseline in Degrees (Mean) (95% CI)aANCOVA Change from Baseline in Degrees (LS Mean) (95% CI)ANCOVA Estimate of Mean Difference (95% CI)ANCOVA P Value
BKPVPBKPVPBKPVP
Post-op2131953.10 (2.39–3.80)3.41 (2.61–4.21)3.34 (2.70–3.99)3.14 (2.47–3.81)0.21 (−0.73–1.14).663
3 Mo1681551.78 (0.98–2.58)2.28 (1.37–3.19)2.00 (1.27–2.72)2.04 (1.28–2.80)−0.04 (−1.10–1.01).933
12 Mo1541271.97 (1.11–2.82)1.51 (0.58–2.44)2.18 (1.47–2.89)1.26 (0.48–2.04)0.92 (−0.14–1.98).089
24 Mo99922.09 (0.90–3.28)1.43 (0.39–2.47)2.46 (1.55–3.37)1.04 (0.09–1.98)1.42 (0.10–2.74).036
  • Note:—Post-op indicates postoperative; LS, least squares.

  • a On the basis of the paired t test, changes from baseline results at each time point within each group (BKP and VP) were statistically significant (P ≤ .007).