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Table 1 Evaluation schedule

From: Comparing the efficacy and safety of minimally invasive biportal endoscopic spine surgery versus conventional microscopic discectomy in single-level lumbar herniated intervertebral disc (ENDO-BH Trial): a multicenter, prospective, randomized controlled equivalence trial study protocol

Visit type

Screening

Operation/treatment

Follow-up

Visit

1

2

3

4

5

6

Visit week

− 4~0 weeks

0–2 day

2 weeks

12 weeks

24 weeks

52 weeks

  

± 5 days

± 4 weeks

± 8 weeks

± 8 weeks

Informed consent

â– 

     

Demographics*

â– 

     

Inclusion/exclusion

â– 

     

Randomization

 

â– 

    

Operation

 

â– 

    

MRI (or CT)†

â– 

â– 

    

Simple radiographs

â– 

 

â– 

â– 

â– 

â– 

ODI

â– 

 

â– 

â– 

â– 

â– 

EQ-5D-5L

â– 

 

â– 

â– 

â– 

â– 

VAS

â– 

 

â– 

â– 

â– 

â– 

POSAS

   

â– 

â– 

â– 

Other surveys‡

  

â– 

â– 

â– 

â– 

Adverse events

 

â– 

â– 

â– 

â– 

â– 

  1. MRI magnetic resonance imaging, CT computed tomography, ODI Oswestry Disability Index, EQ-5D-5L EuroQol 5 Dimension 5 level, VAS visual analog scale, POSAS Patient and Observer Scar Assessment Scale
  2. *Baseline patients’ characteristics including past medical/surgical history, physical examination, and laboratory tests
  3. †CT scan is possible when MRI cannot be taken
  4. ‡Including surgery satisfaction, walking time, postoperative return to daily life period