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Table 3 Univariate analysis between Group K and Group L

From: Postoperative alterations of sagittal cervical alignment and risk factors for cervical kyphosis in 124 Lenke 1 adolescent idiopathic scoliosis patients

Intergroup Comparison

measurement

GROUP K vs. GROUP L

Pre-op

Post-op

Last follow-up

â–³parameter

MTA

49.8 ± 16.2 vs. 49.7 ± 19.3

13.0 ± 11.8 vs. 16.2 ± 11.3

16.2 ± 11.2 vs. 16.0 ± 11.6

−33.7 ± 13.2 vs. -33.7 ± 16.8

PI

47.8 ± 14.4 vs. 44.0 ± 11.6

47.7 ± 15.3 vs. 40.7 ± 12.3*

48.3 ± 13.6 vs. 41.4 ± 12.3**

0.5 ± 9.2 vs. -5.9 ± 12.5**

PT

11.1 ± 16.2 vs. 4.3 ± 9.0**

10.3 ± 11.4 vs. 7.7 ± 10.0

10.8 ± 10.2 vs. 4.1 ± 9.3**

−0.3 ± 13.0 vs. -0.5 ± 6.8

SS

40.0 ± 9.2 vs. 39.7 ± 9.2

37.4 ± 9.2 vs. 33.1 ± 8.2*

37.6 ± 8.1 vs. 37.4 ± 8.8

−2.5 ± 7.1 vs. -3.3 ± 9.2

LL

−52.6 ± 11.7 vs. -58.2 ± 11.9*

− 43.3 ± 12.5 vs. -44.9 ± 12.6

− 51.8 ± 11.1 vs. -54.2 ± 11.1

0.9 ± 9.8 vs. 4.1 ± 9.9

TK

18.9 ± 12.9 vs. 37.8 ± 170.***

18.2 ± 6.9 vs. 29.7 ± 12.1***

22.5 ± 9.8 vs. 32.8 ± 12.2***

3.6 ± 12.2 vs. -4.9 ± 11.4***

PrTK

5.1 ± 6.3 vs. 8.2 ± 10.4

8.1 ± 8.3 vs. 8.1 ± 10.9

7.7 ± 7.1 vs. 11.5 ± 11.6

2.8 ± 6.6 vs. 3.2 ± 13.8

GTK

23.0 ± 12.2 vs. 39.9 ± 17.3***

20.7 ± 8.9 vs. 33.4 ± 10.7***

26.9 ± 9.8 vs. 41.2 ± 10.9***

4.3 ± 11.7 vs. 1.2 ± 12.5

SVA

−23.7 ± 42.1 vs. -15.7 ± 38.6

11.7 ± 28.2 vs. 12.7 ± 37.4

−19.0 ± 29.4 vs. -12.5 ± 29.2

4.7 ± 37.0 vs. 3.2 ± 45.9

CSVA

23.5 ± 12.1 vs. 20.0 ± 9.2

25.6 ± 9.7 vs. 22.0 ± 11.1

23.1 ± 10.2 vs. 20.0 ± 12.1

−0.4 ± 7.4 vs. -0.1 ± 12.1

T1-slope

9.2 ± 9.0 vs. 21.2 ± 11.9***

14.5 ± 6.5 vs. 21.5 ± 7.8***

12.7 ± 6.4 vs. 24.1 ± 7.4***

4.3 ± 9.1 vs. 3.5 ± 11.8

CL

10.5 ± 12.9 vs. -11.1 ± 12.5***

3.7 ± 10.1 vs. -8.9 ± 10.7***

9.1 ± 7.6 vs. -14.0 ± 10.3***

−0.5 ± 13.9 vs. -3.1 ± 13.3

McGS

4.2 ± 6.9 vs. 2.6 ± 9.6

7.0 ± 5.5 vs. 4.2 ± 8.1

11.3 ± 33.1 vs. 1.7 ± 7.4*

7.5 ± 33.7 vs. -0.8 ± 8.5

  1. Method: independent t-test, chi-square test. *P < 0.10, **P < 0.05, ***P < 0.01