Table 2 VAS evolution at 1 month.

From: Lumbar zygapophyseal joints injections under ultrasound guidance an alternative to fluoroscopy guidance in the management of low back pain

 

Ultrasound (N = 24)

Scopy (N = 30)

Total (N = 54)

p intergroup comparison

VAS M0

   

0.397 (W)

n

24

30

54

 

Median

76.5

70.5

75.0

 

Q1–Q3

65.0–85.0

62.0–82.0

65.0–85.0

 

VAS M1

   

0.602 (W)

n

23

28

51

 

Median

40.0

40.0

40.0

 

Q1–Q3

30.0–62.0

27.5–57.5

29.0–60.0

 

Evolution VAS M1–M0

   

0.835 (W)

N

23

28

51

 

Median

−30.0

−29.5

−30.0

 

Q1–Q3

−50.0 to −20.0

−47.0 to −15.0

−48.0 to −18.0

 

p value intra-group comparison

 < 0.001 (RS)

 < 0.001 (RS)

 < 0.001 (RS)

 
  1. (RS) Signed rank test.
  2. (W) Wilcoxon test.