The roles of negative mood, impulsivity, and executive dysfunction in non-suicidal self-injury behaviors among Chinese middle school students

Table 1 Gender differences in negative mood, impulsivity, executive dysfunction, and NSSI thoughts and behaviors (N_boy = 574, N_girl = 510)

Variables		Boy	Girl	t/χ²	p
Negative mood		23.59 ± 21.55	28.07 ± 23.11	-3.298	0.001
Impulsivity		18.37 ± 4.11	19.01 ± 4.20	-2.543	0.011
Executive dysfunction		17.94 ± 14.46	20.99 ± 15.52	-3.344	0.001
NSSI thoughts	No	464(80.84%)	344(67.45%)	25.494	< 0.001
	Yes	110(19.16%)	166(32.55%)
NSSI behaviors	No	513(89.37%)	430(84.31%)	6.108	0.013
	Yes	61(10.63%)	80(15.69%)

ISSN: 2050-7283