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Table 1 Sociodemographics of the sample

From: A new integrative model for the co-occurrence of non-suicidal self-injury behaviours and eating disorder symptoms

 

Total

(n = 654)

EDs

(n = 123)

Community

(n = 531)

Statistic^

p

Effect size*

Mean (SD)

      

 Age (years)

22.48 (8.13)

25.30 (7.59)

21.83 (8.11)

4.33

< .001

.44

 BMI

21.76 (4.46)

20.92 (5.00)

21.95 (4.31)

2.11

.037

.22

N (%)

      

 Ethnicity

      

  Caucasian

301 (46.0)

99 (80.5)

202 (38.0)

87.73

< .001

.37

  Aboriginal/Torres Strait

1 (0.2)

0 (0.0)

1 (0.2)

   

  Asian

249 (38.1)

7 (5.7)

242 (45.6)

   

  European

69 (10.6)

13 (10.6)

56 (10.5)

   

  Middle-Eastern

10 (1.5)

1 (0.8)

9 (1.7)

   

  African

5 (0.8)

0 (0.0)

5 (0.9)

   

  Hispanic

1 (0.2)

1 (0.8)

0 (0.0)

   

  Other

18 (2.8)

2 (1.6)

16 (3.0)

   

 Highest completed education

      

  Primary

2 (0.3)

1 (0.8)

1 (0.2)

7.73

.102

.11

  Secondary

322 (49.2)

65 (52.8)

257 (48.4)

   

  Tertiary

264 (40.4)

39 (31.7)

225 (42.4)

   

  Postgraduate

66 (10.1)

18 (14.6)

48 (9.0)

   

 Marital status

      

  Single

432 (66.1)

73 (59.3)

359 (67.6)

24.74

< .001

.20

  In a relationship

170 (26.0)

29 (23.6)

141 (26.6)

   

  Married

42 (6.0)

16 (13.0)

26 (4.9)

   

  Separated

5 (0.8)

4 (0.3)

1 (0.2)

   

  Divorced

3 (0.5)

1 (0.8)

2 (0.4)

   

  Widowed

2 (0.3)

0 (0.0)

2 (0.4)

   

 Employment

      

  Working full-time

71 (10.9)

21 (17.1)

50 (9.4)

50.50

< .001

.28

  Working part-time

149 (22.8)

29 (23.6)

120 (22.6)

   

  Unemployed

43 (2.0)

23 (18.7)

20 (3.8)

   

  Student

391 (59.8)

50 (40.7)

341 (64.2)

   
  1. ^t-test for continuous outcomes, chi-square for categorical outcomes
  2. *Cohen’s d for comparison on continuous variables; Cramer’s V for comparison with categorical variables