Effectiveness of an intervention for reducing social stigma towards mental illness in adolescents

Table 4 Mean scores of the Community Attitudes towards Mental Illness subscales and comparison of the differences in the averages of the control and intervention groups by gender

		Baseline		Post-intervention		Difference between baseline and post-intervention		T-students	P value
		Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)
		Control	Intervention	Control	Intervention	Control	Intervention
Boys	Authoritarianism	27.44 (3.12)	28.50 (3.77)	28.04 (4.31)	26.18 (4.16)	-0.74 (3.12)	2.27 (3.93)	4.771	0.000
	Benevolence	22.33 (4.40)	22.95 (4.54)	22.93 (4.95)	22.76 (4.51)	-0.34 (3.12)	0.19 (3.61)	0.901	0.369
	Social restrictiveness	21.45 (4.61)	20.77 (4.39)	23.06 (5.78)	21.65 (4.34)	-1.64 (4.06)	-0.63 (3.97)	1.432	0.154
	Community mental health ideology	25.04 (5.82)	23.98 (5.43)	25.99 (6.20)	23.89 (5.57)	-0.87 (3.81)	0.32 (5.40)	1.477	0.142
Girls	Authoritarianism	25.80 (3.14)	26.14 (3.41)	25.58 (3.23)	24.51 (3.92)	0.12 (2.47)	1.67 (4.14)	2.617	0.010
	Benevolence	21.19 (3.53)	21.02 (3.38)	21.40 (3.41)	21.51 (3.69)	-0.21 (2.63)	-0.45 (3.52)	-0.473	0.637
	Social restrictiveness	20.35 (4.37)	19.36 (3.73)	21.26 (4.36)	19.08 (3.99)	-0.88 (3.50)	0.30 (2.91)	2.106	0.037
	Community mental health ideology	23.82 (4.45)	21.97 (4.86)	23.65 (4.74)	21.17 (5.17)	0.13 (3.22)	0.49 (3.23)	0.649	0.518