Table 2.

Main results of the regression analyses in which symptoms of SM were predicted from social anxiety, autistic features, and behavioral inhibition.

	B	95% CI	SE	β	R2
SMQ Selective mutism†					0.46***
PAS-R Social anxiety	1.07	[0.85, 1.30]	0.12	0.60***
ASQ Autistic features	0.12	[0.01, 0.24]	0.06	0.14*
SMQ Selective mutism					0.47***
PAS-R Social anxiety	1.04	[0.80, 1.27]	0.12	0.58***
ASQ Interactive/communicative problems	0.24	[0.02, 0.46]	0.11	0.17*
ASQ Odd/deviant behaviors	0.01	[−0.21, 0.23]	0.11	0.01
SMQ Selective mutism					0.51***
PAS-R Social anxiety	0.35	[−0.05, 0.75]	0.20	0.20+
ASQ Autistic features	0.06	[−0.05, 0.17]	0.06	0.07
BIQ-SF Behavioral inhibition	0.34	[0.18, 0.50]	0.08	0.50***

N = 172. SMQ, Selective Mutism Questionnaire; PAS-R, Preschool Anxiety Scale-Revised; BIQ-SF, Behavioral Inhibition Questionnaire-Short Form; ASQ, Autism Spectrum Questionnaire.

^†The SMQ total score was reversed so that higher scores indicated higher levels of SM symptoms.

⁺p < 0.10,

^*p < 0.05,

^***p < 0.001.