. 2020 Aug 27;51(6):1866–1879. doi: 10.1007/s10803-020-04669-z

Table 3.

Hierarchical linear regression models of the association between autistic traits (AQ total score) and disordered eating (EAT-26 total score)

	Step 1				Step 2				Step 3				Step 4
	Unstandardized coefficients		Standardized coefficients		Unstandardized coefficients		Standardized coefficients		Unstandardized coefficients		Standardized coefficients		Unstandardized coefficients		Standardized coefficients
	B	95% CI	Beta	p	B	95% CI	Beta	p	B	95% CI	Beta	p	B	95% CI	Beta	p
(Constant)	4.106	2.119, 6.092		< 0.001	− 5.126	− 11.581, 1.328		0.119	− 6.701	− 13.224, − 0.179		0.044	− 6.858	− 13.377, − 0.339		0.039
AQ total	0.300	0.192, 0.408	0.217	< 0.001	0.654	0.392, 0.915	0.473	< 0.001	0.643	0.371, 0.914	0.465	< 0.001	0.609	0.336, 0.882	0.441	< 0.001
Sex/gender					4.080	0.752, 7.407	0.195	0.016	4.514	1.175, 7.853	0.215	0.008	4.385	1.046, 7.724	0.209	0.010
AQ*sex/gender					− 0.327	− 0.503, − 0.152	− 0.471	< 0.001	− 0.340	− 0.517, − 0.162	− 0.489	< 0.001	− 0.336	− 0.513, − 0.159	− 0.484	< 0.001
Age					− 0.030	− 0.094, 0.035	− 0.030	0.367	− 0.020	− 0.085, 0.045	− 0.020	0.546	− 0.022	− 0.087, 0.043	− 0.023	0.502
BMI					− 0.180	− 0.329, − 0.031	− 0.079	0.018	− 0.185	− 0.333, − 0.036	− 0.081	0.015	− 0.198	− 0.347, − 0.048	− 0.087	0.010
Over-evaluation					3.154	2.788, 3.520	0.580	< 0.001	3.055	2.680, 3.429	0.562	< 0.001	3.033	2.659, 3.407	0.558	< 0.001
Data collection					− 1.065	− 2.780, 0.649	− 0.041	0.223	− 1.022	− 2.729, 0.685	− 0.039	0.240	− 1.037	− 2.741, 0.668	− 0.040	0.233
Anxiety									0.205	0.033, 0.378	0.085	0.020	0.135	− 0.050, 0.320	0.056	0.152
AQ*anxiety									− 0.014	− 0.033, 0.004	− 0.049	0.133	− 0.018	− 0.042, 0.006	− 0.061	0.150
Depression													0.303	− 0.003, 0.609	0.075	0.052
AQ*depression													0.005	− 0.035, 0.045	0.010	0.814
Model fit	F (1, 601) = 29.744, p < 0.001				F (7, 595) = 61.272, p < 0.001				F (9, 593) = 48.936, p < 0.001				F (11, 591) = 40.559, p < 0.001
R²	0.047				0.419				0.426				0.430
R² change					0.372				0.007				0.004
F change					F (6, 595) = 63.436, p < 0.001				F (2, 593) = 3.767, p = 0.024				F (2, 591) = 2.069, p = 0.127

AQ Autism Spectrum Quotient, HADS Hospital Anxiety and Depression Scale, BMI Body Mass Index