Table 1 Demographic and clinical characteristics.

From: Salivary beta-endorphin in nonsuicidal self-injury: an ambulatory assessment study

Characteristic

n

%

Range

Mean

SD

Demographic variables

     

 Body mass index

51

 

17.2–34.4

24.2

4.9

 Years of education

51

 

8–15

11.87

1.44

 Employment status

51

    

 Employed

17

33.33

   

 Student or pupil

16

31.37

   

 Unemployed

14

27.45

   

 Disability pension

4

7.84

   

History of nonsuicidal self-injurya

     

 Age of onset

50

 

6–28

14.33

3.86

 Estimated lifetime NSSI

49

 

25–2590

763.82

664.03

 Past year

50

 

25–624

126.48

103.72

 Past month

50

 

3–32

10.36

6.44

 Engagement of years in NSSI

50

 

0–33

9.65

6.48

Comorbid diagnosesb

     

Mood disorders

     

 Major depression

33

    

 Dysthymia

4

    

Anxiety disorders

     

 Social phobia

11

    

 Specific phobia

6

    

 Generalized anxiety disorder

2

    

 Panic disorder

6

    

 Agoraphobia without panic

2

    

 Posttraumatic stress disorder

25

    

 Obsessive comp. disorder

6

    

Substance use disorders

     

 Substance abuse

2

    

Somatic disorders

     

 Somatic pain disorder

1

    

Eating disorders

     

 Anorexia

6

    

 Bulimia

5

    

Attention deficit disorder

1

    

Borderline personality disorder

32

    

Any mental disorder

51

 

0–5

2.24

1.45

  1. aQuestionnaire data of the self-injurious thoughts and behavior interview: German.
  2. bDiagnosis according to SKID-I and IPDE.
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