Assessment of quality of life in people with severe and enduring anorexia nervosa: a comparison of generic and specific instruments

Table 3 Multiple linear regression models using the SF-12 and EDQOL subscales as predictors of change in eating disorder pathology

Dependent	Significant predictors	B	SE (B)	β	t	p
*Without Axis I Comorbidity as a Covariate*
EDE change: baseline to post-treatment	SF-12 MCS	−0.05	0.01	−0.47	−3.36	0.002
	Treatment assignment	−1.02	0.35	−0.40	−2.88	0.006
R ² _adj = 0.23
EDE change: baseline to 6-month follow-up	SF-12 MCS	−0.04	0.02	−0.36	−2.20	0.04
	Treatment assignment	−0.86	0.40	−0.35	−2.13	0.04
R ² _adj = 0.12
EDE change: baseline to 12-month follow-up	SF-12 PCS	0.05	0.02	0.32	2.11	0.04
R ² _adj = 0.08
*With Axis I Comorbidity as a Covariate*
EDE change: baseline to post-treatment	SF-12 MCS	−0.04	0.01	−0.43	−2.85	0.01
	Treatment assignment	−0.84	0.36	−0.35	−2.31	0.03
R ² _adj = 0.16
EDE change: baseline to 6-month follow-up	Treatment assignment	−0.81	0.44	−0.33	−1.87	0.07
	SF-12 MCS	−0.03	0.02	−0.32	−1.82	0.08
R ² _adj = 0.08
EDE change: baseline to 12-month follow-up	SF-12 PCS	0.05	0.03	0.33	2.11	0.04
R ² _adj = 0.08

R ² _adj = variance in the dependent variable accounted for by the predictor variable(s), adjusting for statistical shrinkage; SF-12 = Medical Outcomes Study Short Form; PCS = Physical Component Summary Scale; EDQOL = Eating Disorders Quality of Life Questionnaire; EDE = Eating Disorders Examination (global scale).

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