Table 3. Multivariable Receiver Operating Characteristic Analysis for Patients in the Placebo Group.

Model	AUC	95% CI
QIDS-SR baseline	0.816	0.696-0.935
Initial treatment with radiotherapy	0.681	0.552-0.811
QIDS-SR plus initial treatment with radiotherapy	0.904	0.833-0.975

Abbreviations: AUC, area under the curve; QIDS-SR, Quick Inventory of Depressive Symptomatology–Self Report.