Table 4 NSSI attitudes and expectations in the identified groups with and without NSSI, means and standard deviations

NEQ Affect regulation

3.18 (1.38)

5.42 (1.79)

3.59 (1.23)

F(2, 263) = 49 p < 0.001 η² = 0.269

I-II p < 0.001

I-III p = 0.202

II-III p < 0.001

NEQ Negative social outcomes

4.83 (1.72)

4.62 (1.52)

4.98 (1.62)

F(2, 263) = 0.691 p = 0.502

NEQ Communication

3.22 (1.36)

3.16 (1.51)

3.28 (1.51)

F(2, 263) = 0.088 p = 0.916

NEQ Pain

6.19 (1.88)

6.2 (1.73)

6.41 (1.69)

F(2, 263) = 0.341 p = 0.712

NEQ Negative self-beliefs

5.38 (1.73)

5.84 (1.61)

5.76 (1.6)

F(2, 263) = 2.036 p = 0.133

Stigma awareness

14.45 (5.04)

16.73 (5.55)

15.59 (4.79)

F(2, 262) = 4.26 p = 0.015 η² = 0.033

I-II p = 0.015

I-III p = 0.454

II-III p = 0.706

Stigma agreement

7.41 (2.93)

7.27 (3.25)

7.07 (2.9)

F(2, 262) = 0.274 p = 0.761

HSA

11.39 (2.89)

10.27 (2.32)

10.52 (3.04)

F(2, 262) = 4.1 p = 0.018 η² = 0.025

I-II p = 0.038

I-III p = 0.139

II-III p = 1

AHSY

9.39 (1.99)

8.16 (2.11)

8.57 (2.17)

F(2, 262) = 8.599 p < 0.001 η² = 0.06

I-II p < 0.001

I-III p = 0.029

II-III p = 0.885

RCS

9.3 (1.84)

8.27 (2.16)

8.81 (1.95)

F(2, 262) = 5.909 p = 0.003 η² = 0.045

I-II p = 0.003

I-III p = 0.317

II-III p = 0.425