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Table 3 Improvement of VAS score due to various factor

From: Effect of arthrocentesis on the clinical outcome of various treatment methods for temporomandibular joint disorders

 

VAS

   

N

Pre

Post

P value*

Difference of VAS

P value

Mean

(SD)

Mean

(SD)

Mean

(SD)

Appliance treatment

        

0.1768a

 No splint

32

4.48

(1.94)

1.75

(1.92)

< .0001

− 2.73

(1.88)

 

 Splint tx

25

5.14

(2.02)

1.72

(1.88)

< .0001

− 3.42

(1.87)

 

Type of appliance tx

        

0.4002b

 No splint

32

4.48

(1.94)

1.75

(1.92)

< .0001

− 2.73

(1.88)

 

 ARS

9

5.00

(2.87)

1.33

(2.18)

0.0023

− 3.67

(2.50)

 

 ARS and CRS

15

5.23

(1.50)

2.07

(1.71)

< .0001

− 3.17

(1.46)

 

Dx

        

0.9568b

 DD with locking

32

4.81

(2.30)

1.84

(1.92)

< .0001

− 2.97

(1.84)

 

 DD without locking

15

4.80

(1.74)

1.67

(1.72)

< .0001

− 3.13

(2.07)

 

 DJD

10

4.60

(1.26)

1.50

(2.17)

0.0008

− 3.10

(1.97)

 

Muscle relaxants

        

0.6760a

 No

11

5.00

(2.41)

2.18

(1.78)

0.0004

− 2.82

(1.78)

 

 Yes

46

4.72

(1.90)

1.63

(1.91)

< .0001

− 3.09

(1.93)

 

Locking period

        

0.0697a

 < 6 months

34

4.46

(2.24)

1.79

(1.97)

< .0001

− 2.66

(1.96)

 

 ≥ 6 months

23

5.24

(1.44)

1.65

(1.80)

< .0001

− 3.59

(1.68)

 
  1. P < 0.05 considered statistically significant
  2. DD disc displacement, DJD degenerative joint disease, ARS anterior repositioning splint, CRS centric relation splint
  3. *P value calculated by paired t test
  4. Difference = post − pre
  5. aP value calculated by t-test
  6. bP value calculated by ANOVA