Although, no studies have used these new criteria, two previous studies, surveying the general population with age ranges from adolescence to adults, based their estimates on multi-phased assessments with screening questionnaires, sleep diaries as well as on clinical interviews.
The Strengths and Difficulties Questionnaire (SDQ) [ 6] was first developed as a shorter alternative to behavioural screening questionnaires such as the Rutter [ 26] and Child Behaviour Checklist [ 27, 28] but with an additional focus on young people's "strengths".
The Mood Disorder Questionnaire (MDQ) was designed as a screening questionnaire for bipolar disorder.
In the present study, the AMS scale was selected as the screening questionnaire for several reasons.
For brevity and simplicity, we have only considered the simplest scoring method for this instrument, which is recommended when the GHQ is used as a screening questionnaire.
The BDI is a self-report scale that can be used as a screening questionnaire to assess the cognitive, affective [ 23], and somatic symptoms of depression [ 24].
Routine intermittent administration of this questionnaire in the setting of post-radiation therapy follow-up could serve as a screening questionnaire to detect negative quality-of-life effects due to the late toxicities of prostate radiation therapy.
