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Could SF-36 be used as a screening instrument for depression in a Swedish youth population?
Jóna Kristjánsdóttir1, Gunilla I Olsson, Claes Sundelin
1Department of Women's and Children's health, Section for Obstetrics & Gynaecology, Uppsala University, Uppsala, Sweden. Jona.kristjansdottir@akademiska.se
Objective:
Depression among youth is a condition associated with serious long-term morbidity and suicide. The aim of this study was to investigate whether a HRQoL instrument, the short form 36 version 1.0 (SF-36), could be used to screen for depression in a clinical Youth Centre (YC). A second purpose was to describe self-reported health and depression.
Setting:
A clinical YC at a University hospital.
Design:
A sample of 660 youths, 14-20 years old was assessed with SF-36 and Montgomery Åsberg Depression Rating Scale, self-screening version (MADRS-S). Answers to all the questions in both instruments were given by 79% (519/660; 453 women and 66 men). Mean age in the sample was 17.5±1.6 years.
Results:
Strong correlations were found between all the SF-36 subscales and the depression ratio scale MADRS-S. Receiver operating characteristic (ROC) curve analysis confirmed that the SF-36 subscales mental health (MH) and vitality (VT) could correctly predict depression on the individual level with Area Under the ROC Curve values 0.87 and 0.84 in ROC curves. Individuals scoring 48 or lower on MH and 40 or lower on VT should be followed up with a clinical interview concerning possible depressive disorder. Mild to moderate depression was common (35.5%), especially among women (37.5%). Men scored higher than women on all SF-36 subscales except for physical functioning.
Conclusions:
The SF-36 can be used to screen for suspect depression in a youth population followed by interview. This gives an opportunity to detect and treat emerging depressive symptoms early.
