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Table 4 Association between conventional method versus modified method and clinical outcomes with controlling the factors by GEE

From: Modified paramedian versus conventional paramedian technique in the residency training: an observational study

 

OR(95%CI)

p value

Spinal Group

Attempt Number

 1

1

 

 2–4 and failure

5.763 (4.911–6.763)

< 0.001

Complications

 None

1

 

 Yes

0.848 (0.190–3.783)

0.829

Epidural group

Attempt Number

 1

1

 

 2–4 and failure

13.739 (11.298–16.709)

< 0.001

Implant error

 None

1

 

 D

5.766 (3.693–9.002)

< 0.001

 P

6.906 (4.482–10.639)

< 0.001

 IV

15.251 (3.618–64.298)

< 0.001

Complications

 None

1

 

 Yes

13.663 (2.143–87.098)

0.006

Combined group

Attempt Number

 1

1

 

 2–4 and failure

5.354 (3.973–7.214)

< 0.001

Implant error

 None

1

 

 D

12.744 (3.578–45.392)

< 0.001

 P

11.616 (7.549–17.873)

< 0.001

IV

12.801 (3.944–41.547)

< 0.001

Complications

 None

1

 

 Yes

7.131 (1.804–28.187)

0.005

  1. Abbreviations: OR Odd ratio; D difficulty at threading; P dura puncture, IV intravascular catheterization