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Table 2 Data collection and outcome measures.

From: Cost-effectiveness of decompression according to Gill versus instrumented spondylodesis in the treatment of sciatica due to low grade spondylolytic spondylolisthesis: A prospective randomised controlled trial [NTR1300]

Time in weeks

X

0

3

6

12

26

52

104

156

208

260

Preferred treatment of patient/surgeon/RN

v

          

Neurological examination

v

  

v

v

v

V

v

  

v

Randomisation

v

          

Operation

 

v

         

Perceived recovery according to patient (Likert)

v

 

v

v

v

v

V

v

v

v

v

Perceived recovery according to surgeon/RN (Likert)

   

v

v

v

V

v

  

v

Macnab

v

  

v

v

v

V

v

  

v

HADS

v

  

v

v

v

V

v

  

v

Severity of complaints (VAS)

v

v

v

v

v

v

V

v

v

v

v

Roland Disability Questionnaire

v

v

v

v

v

v

V

v

v

v

v

Karasek

v

  

v

v

v

V

v

v

v

v

SF-36

v

  

v

v

v

V

v

v

v

v

EuroQol

v

v

v

v

v

v

V

v

v

v

v

Patient diary

v

 

v

v

v

v

V

v

v

v

v

CPK

 

v

         

X-ray

v

   

v

 

V

v

  

v

MRI

v

     

V

    

CT

v

   

v

 

V

    

(Re)-operation

  

v

v

v

v

V

v

v

v

v

Complications

 

v

  

v

 

V

v

  

v

  1. X is randomisation and 0 is operation. On week 3, 156, and 208 (bold columns), questionnaires will be sent by mail
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