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Table 1 Clinical characteristics of the study sample

From: Dopamine in plasma – a biomarker for myofascial TMD pain?

 

Patients with M-TMD

Controls

P

Test

Subjects

    

All

15

15

Females

11

11

Males

4

4

Age (yrs)

31.8 ± 13.4

31.6 ± 12.4

0.966

Independent samples t-test

Duration of M-TMD (months)

58.6 ± 60.3

0.0 ± 0.0

<0.001

Mann-Whitney U test

No. of muscle sites with pain on palpation (max. 20)

14 (8)

2 (2)

<0.001

Mann-Whitney U test

No. of TMJ sites with pain on palpation (max. 4)

1 (1)

0 (0)

<0.001

Mann-Whitney U test

Perceived mental stress (PSS-10)

16.6 ± 5.9

12.1 ± 3.6

<0.05

Independent samples t-test

Self-reported awake bruxism

11

3

  

Self-reported sleep bruxism

11

7

  

Blood sampling at 8 am

8

8

  

Blood sampling at 1 pm

7

7

  
  1. Mean ± SD, age (yrs), duration of M-TMD (mos), and perceived mental stress; median (interquartile range) number of muscle and temporomandibular joint (TMJ) sites with pain on palpation; frequency of self-reported awake and sleep bruxism, and blood sampling time, in 15 patients with M-TMD and 15 healthy subjects