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Table 1 Demographic characteristics of both the PEID group and PETD group

From: A comparative study of percutaneous endoscopic interlaminar discectomy and transforaminal discectomy for L5-S1 calcified lumbar disc herniation

Variables

PEID (n = 28)

PETD (n = 26)

P Value

Age (years)

37.46 ± 6.68

37.73 ± 8.33

0.897

Sex

  

0.761

Male

15

15

 

Female

13

11

 

BMI (Kg/m2)

26.12 ± 3.27

26.01 ± 3.18

0.893

Duration of symptoms (months)

15.57 ± 18.61

15.46 ± 19.21

0.787

Type of calcification

  

0.310

Isolated type

(< 3 mm)

11

6

 

Half-lunar type

(3–10 mm)

10

9

 

Successive type (> 10 mm)

7

11

 

Location of calcification

  

0.884

Central type

12

10

 

Paracentral type

10

11

 

Foraminal type

6

5

 

Follow-up (months)

15.93 ± 3.03

15.73 ± 3.71

0.547

  1. Values are mean ± SD, number, or as otherwise indicated. PEID, percutaneous endoscopic interlaminar discectomy; PETD, percutaneous endoscopic transforaminal discectomy; BMI, body mass index