Table 4.

Regression results testing the moderating role of best friends’ peer acceptance.

Genders	Regression model		R2	F	b	SE	95%CI
	Outcomes	Predictors
Boys	Friendship quality (M1)	Best friends’ Dep (X)	0.004	0.34	−0.04	0.053	[−0.15, 0.06]
		Best friends’ peer Acp (W1)			0.04	0.054	[−0.06, 0.15]
		Int1(X × W1)			0.02	0.055	[−0.08, 0.13]
	Rumination (M2)	Best friends’ Dep	0.04	3.69**	0.09	0.051	[−0.01, 0.19]
		Best friends’ peer Acp			−0.08	0.051	[−0.18, 0.02]
		Int2(X × W1)			−0.06	0.052	[−0.16, 0.04]
	Adolescents’ own Dep (Y)	Best friends’ Dep	0.52	73.90***	0.02	0.014	[−0.01, 0.05]
		Friendship quality			−0.06***	0.012	[−0.09, −0.04]
		Rumination			0.27***	0.013	[0.25, 0.30]
		Best friends’ peer Acp			0.01	0.014	[−0.02, 0.04]
		Int3(X × W1)			0.03*	0.015	[0.001, 0.06]
Girls	Friendship quality	Best friends’ Dep	0.02	2.21*	−0.09*	0.043	[−0.18, −0.01]
		Best friends’ peer Acp			0.07	0.049	[−0.02, 0.17]
		Int1(X × W1)			0.04	0.048	[−0.05, 0.14]
	Rumination	Best friends’ Dep	0.04	3.54**	0.09*	0.045	[0.001, 0.18]
		Best friends’ peer Acp			−0.05	0.051	[−0.15, 0.06]
		Int2(X × W1)			0.06	0.050	[−0.04, 0.15]
	Adolescents’ own Dep	Best friends’ Dep	0.56	81.98***	0.04**	0.013	[0.01, 0.06]
		Friendship Quality			−0.08***	0.014	[−0.10, −0.05]
		Rumination			0.29***	0.013	[0.26, 0.32]
		Best friends’ peer Acp			−0.04*	0.015	[−0.07, −0.01]
		Int3(X × W1)			0.01	0.014	[−0.02, 0.04]

^***p < 0.001, ^**p < 0.01, ^*p < 0.05. Dep = depressive symptoms, Acp = acceptance. All regression models included grade and only-child status as covariates.