Table 3.

Multivariable linear regression models

Model	Independent Variable	Dependent Variable/s	B	SE	β	R2	P value
Model 1 (unadjusted)	Sleep Quality	A1C	0.109	0.032	0.382	0.146	0.001
		Body mass index	0.235	0.162	0.178	0.032	.151
		Physical Activity	−0.120	0.053	−0.268	0.072	0.027
		Diet	−0.235	0.080	−0.340	0.116	0.004
Model 2 (covariates)	Sleep Quality	A1C	0.106	0.033	0.389	0.202	0.002
		Body mass index	0.309	0.162	0.238	0.129	0.061
		Physical Activity	−0.118	0.056	−0.267	0.115	0.038
		Diet	−0.234	0.078	−0.358	0.209	0.004

Note. B is the unstandardized coefficient regression coefficient. SE standard error. β is the standardized regression coefficient. R² = coefficient of determination shown for each model. Sleep Quality was based on the Pittsburgh Sleep Quality Index global score; Physical activity and diet subscales of the Diabetes Self-Management Questionnaire. Cardiovascular health composite score. Model 1 is unadjusted; Model 2 covariates include age, T1D duration, sex assigned at birth. Bolded values are significant