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Table 2 Per-fixation level surgical stage lengths for the three groups.

From: Intraoperative blood loss during different stages of scoliosis surgery: A prospective study

  

Dissection

Screw insertion

Correction

Bone grafting

Total

Group

Levels

Time

p value

Time

p value

Time

p value

Time

p value

Time

p value

AIS

12.1

4

0.507§

0.475*

5.6

0.761§

0.916*

2.3

0.097§

0.142*

1.8

0.609§

0.674*

13.6

0.75§

0.734*

CP

15

4.5

 

0.841#

5.3

 

0.942#

2.9

 

0.998#

1.6

 

0.648#

14.4

 

0.955#

Paralytic

15.6

4.2

 

0.808α

5.7

 

0.741α

2.3

 

0.15α

1.6

 

0.999α

13.9

 

0.885α

  1. P value suggestive of § ANOVA test. The symbols *, # and α indicate statistical significance of Tuckey's post hoc test between: *-AIS and CP groups, #-AIS and Paralytic groups, and α-CP and Paralytic groups.