TABLE 5.

Summary of linear regression analyses of variables predicting participants’ DEBs (EDI-3RF Drive for Thinness score) in male and female adolescents with T1D and without T1D.

	T1D										Controls
Variables	Males N = 85					Females N = 98					Males N = 85					Females N = 98
	B	SE B	β	p	Collinearity tolerance	B	SE B	β	p	Collinearity tolerance	B	SE B	β	p	Collinearity tolerance	B	SE B	β	p	Collinearity tolerance
Step 1
Age	−0.406	0.626	−0.072	0.519	0.988	0.811	0.646	0.129	0.212	0.996	0.388	0.501	0.087	0.441	0.988	0.111	0.577	0.020	0.848	0.989
SES	−0.043	0.074	−0.064	0.563	0.988	0.038	0.083	0.047	0.648	0.996	0.003	0.052	0.006	0.959	0.988	−0.008	0.080	−0.010	0.920	0.989
Step 2
Age	−0.259	0.625	−0.046	0.680	0.884	0.584	0.647	0.093	0.370	0.880	0.443	0.456	0.100	0.334	0.987	0.353	0.579	0.063	0.544	0.948
SES	0.021	0.074	−0.031	0.780	0.882	0.070	0.079	0.087	0.375	0.971	−0.003	0.048	−0.007	0.949	0.987	0.003	0.079	0.003	0.974	0.985
Duration illness	−0.266	0.214	−0.141	0.217	0.959	0.015	0.285	0.006	0.957	0.944
z-BMI	20.933	0.978	0.318	0.004	0.844	4.829	1.264	0.379	0.000	0.868	2861	0.686	0.426	0.000	0.998	1.647	0.801	0.213	0.043	0.957
HbA1c	1.153	0.736	0.176	0.121	0.857	−0.098	0.534	−0.018	0.855	0.945
Step 3
Age	−0.074	0.549	−0.013	0.893	0.820	0.189	0.513	0.030	0.714	0.862	0.011	0.432	0.002	0.980	0.907	−0.285	0.500	−0.051	0.571	0.709
SES	0.022	0.064	0.033	0.729	0.853	−0.016	0.066	−0.020	0.806	0.860	0.024	0.047	0.051	0.619	0.820	−0.098	0.065	−0.128	0.137	0.794
Duration illness	0.047	0.190	0.025	0.807	0.770	0.242	0.242	0.088	0.319	0.714
z-BMI	0.717	0.923	0.078	0.440	0.762	1.367	1.141	0.107	0.234	0.741	2.166	0.766	0.323	0.006	0.657	0.883	0.703	0.108	0.239	0.693
HbA1c	0.598	0.665	0.091	0.372	0.751	−0.581	0.432	−0.108	0.182	0.889
SATAQ-4R
Int. thin/low body	1.091	0.300	0.368	0.001	0.754	0.727	0.202	0.363	0.001	0.561	0.861	0.325	0.285	0.010	0.736	1.125	0.205	0.537	0.000	0.598
Int. muscular	0.023	0.190	0.013	0.904	0.633	0.178	0.200	0.083	0.376	0.656	−0.088	0.175	−0.055	0.615	0.715	−0.303	0.215	−0.121	0.162	0.776
Int. general attract	0.256	0.349	0.071	0.465	0.838	−0.062	0.148	−0.037	0.678	0.708	0.724	0.277	0.266	0.011	0.828	0.069	0.183	0.034	0.707	0.689
Press. family	−0.155	0.280	−0.090	0.582	0.290	0.145	0.259	0.072	0.578	0.341	−0.248	0.215	−0.170	0.251	0.395	0.402	0.244	0.187	0.104	0.442
Press. peers	−0.084	0.286	−0.045	0.768	0.336	−0.164	0.261	−0.072	0.531	0.433	0.223	0.218	0.158	0.311	0.356	−0.208	0.273	−0.095	0.449	0.369
Press. sign. others	0.580	0.215	0.380	0.009	0.388	0.235	0.273	0.112	0.392	0.340	0.191	0.209	0.140	0.363	0.368	0.195	0.254	0.090	0.446	0.417
Press. media	0.262	0.216	0.190	0.230	3.15	0.577	0.170	0.347	0.001	0.546	0.101	0.167	0.082	0.548	0.465	0.482	0.151	0.317	0.002	0.581

TD1, type 1 diabetes; SES, socioeconomic status; z-BMI, standardized body mass index; HbA1c, glycated hemoglobin; SATAQ-4R, Sociocultural Attitudes Toward Appearance Questionnaire-4-Revised; Int. thin/low body, internalization of the thin-low body fat physical ideal; Int. muscular, internalization of the muscular-athletic physical ideal; Int. general attract., internalization of a more general desire to be attractive or in good shape; Press. family, pressure from family; Press. Peers, pressure from peers; Press. sign. others, pressure from significant others; Press. media, pressure from media. TD1 Male: R² = 0.008 for Step 1 (p = 0.711); ΔR² = 0.139 for Step 2 (p = 0.025); ΔR² = 0.296 for Step 3 (p < 0.001) tot R² = 0.444. TD1 Female: R² = 0.018 for Step 1 (p = 0.426); ΔR² = 0.138 for Step 2 (p = 0.008); ΔR² = 0.364 for Step 3 (p = 0.000); tot R² = 0.520. Control Male: R² = 0.008 for Step 1 (p = 0.742); ΔR² = 0.181 for Step 2 (p = 0.001); ΔR² = 0.204 for Step 3 (p = 0.000); tot R² = 0.393. Control Female: R² = 0.001 for Step 1 (p = 0.975); ΔR² = 0.043 for Step 2 (p = 0.240); ΔR² = 0.463 for Step 3 (p = 0.000); tot R² = 0.507.