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Table 1 Basic characteristics of the two groups

From: Interspinous process stabilization with Rocker via unilateral approach versus X-Stop via bilateral approach for lumbar spinal stenosis: a comparative study

 

Rocker group

X-Stop group

p value

Number

28

27

 

Mean age (range),years

62.1(52–78)

60.5(50–74)

0.848a

Gender(Male/Female)

13/15

15/12

0.498b

BMI ≥ 30

6

4

0.729c

Current smokers

7

7

0.937b

Surgical level

  

0.700b

 L3/4

7

8

 

 L4/5

21

19

 

Surgical procedure

  

0.432b

 Simple distraction

10

7

 

 Unilateral decompression

18

20

 
  1. BMI body mass index
  2. a p value from independent samples t test
  3. b p value from χ2-tests
  4. c p value from Fisher exact tests