Skip to main content

Table 1 Participant demographic details and scores in study variables

From: Non-suicidal self-injury and its relation to suicide through acquired capability: investigating this causal mechanism in a mainly late-diagnosed autistic sample

 

Autistic group (n = 314)

Non-autistic group (n = 312)

Average age (years)

41.9 (SD: 13.4), range 18–72

21.3 (SD: 6.4), range 18–63

Average age at diagnosis (years)

34.6 (14.8), range 2–67

 

Sex

 % male|female|other

26.8|72.9|3

10.3|89.7|0

Gender identity

  

 % Cisgender male

25.2

10.3

 % Cisgender female

57.3

88.8

 % Non-binary|Transgender

14.6|2.9

3|6

Ethnicity

 % Caucasian/White

79.9,

 

 % Black|Mixed race

1.6|5.4

 

 % Other|No response

4.3|8.8

 

Educational attainment

 % GCSEs or equivalent

94.9

99.4

 % Bachelors degree (obtained or studying for)

70.1

89.1

 % Postgraduate qualifications

35.7

1.6

Neurodevelopmental conditions

 % ADHD|ADD

17.2

2.2

 % Dyslexia|Dyspraxia

8.9|8.6

7.1|1.9

 % Other specific learning disabilities

6.4

1.3

Psychiatric conditions

 % Depression|Anxiety|combined depression and anxiety

7.9|9.6|39.8|

4.2|8.3|11.2

 % PTSD/complex PTSD

10.2

 

  % Eating disorders

8.6

 

 % OCD|Other

8.6|9.4

 

 % Single psychiatric condition

18.2

 

 % Two psychiatric conditions

27.4

 

 % 3 + psychiatric conditions

23.2

 

 % No diagnosed psychiatric conditions

31.2

 

History of NSSI

 % With lifetime experience of NSSI

72.6

51.3

Recency of NSSI (within self-harming groups)

 % Over two years ago

36.3

30.5

 % Between 1 and 2 years ago

8.8

16.9

 % Between 6 months and 1 year ago

6.6

15

 % Between 1 and 6 months ago

13.6

15

 % In the last 4 weeks

34.7

22.6

Average scores in study variables

 ACWRSS total

29.9 (SD 13.2), range 0–56

20 (SD 13.2), range 0–53

  Pain tolerance

6.6 (SD 4.9), range 0–16

6.1 (SD 4.8), range 0–16

  Reduced fear of death

7.5 (SD 5.2), range 0–16

4.6 (SD 4.2), range 0–15

  Mental rehearsal of suicide

15.9 (SD 7.6), range 0–2

9.4 (SD 8.2)., range 0–2

 Patient Health Questionnaire-9

4 13 (SD 7.2), range 0–27

4 9.8 (SD 6.6), range 0–27