Table 2 Results of hierarchal multiple regression analyses predicting NSSI by ACEs, RNLEs, NSSI-SE and their interactions

Step 1 (control variables)

Age

0.02^***

0.06

0.02

1.80

SSES

− 0.10

0.02

− 3.36^**

Father’s education level

0.08

0.03

1.76

Mother’s education level

0.04

0.03

0.99

Step 2

ACEs

0.18^***

0.19

0.03

6.05^***

RNLEs

0.12

0.03

3.80^***

NSSI-SE

− 0.26

0.03

− 8.37^***

Step 3

ACEs × RNLEs

0.03^***

− 0.03

0.02

− 0.84

ACEs × NSSI-SE

− 0.12 

0.03

− 3.39^**

RNLEs × NSSI-SE

− 0.10

0.02

− 2.94^**

Step 4

ACEs × RNLEs × NSSI-SE

 < 0.001

0.01

0.02

0.12