Effect of an vitamin D deficiency on depressive symptoms in child and adolescent psychiatric patients – a randomized controlled trial: study protocol

Table 1 Scheduled measurements

Investigated item	Psychometric and sociometric questionaires/instruments	Executed /completed by	Time point(s)	Reference
Depression	BDI-II	Patient	Baseline, and end of study	[83]
Depression	DISYPS-II DES SBB	Patient	Baseline and end of study	[84]
Depression	DISYPS-II DES FBB	Parents	Baseline and end of study	[84]
Intelligence and mental development status	IQ,HAWIK, CFT, Son-R	Patient	Baseline	[85]
Structured Interview for clinical diagnosis	KIDDIE-SADS-PL	Clinical interviewer	Baseline	[66, 86]
Impulsivity	BIS	Patient	Baseline and end of study	[87]
Problem behaviors	CBCL	Parents	Baseline	[88, 89]
Problem behaviors	YSR	Patient	Baseline	[88]
Socioeconomic status	SES (KiGGS)	Parents	Baseline	[90]
Vitamin D status related questionnaire	SUN EXP QUEST	Patient	Baseline	[91, 92]
Habitual food and nutrient intake	FFQ	Patient	Baseline	[54]
Physical Activity	IPAQ	Patient	Baseline	[62]

Abbreviations BIS Barrett Impulsivity Scale, CBCL Child Behavior Checklist, YSR Youth Self Report, TRF Teacher’s Report Form, CFT Culture Fair Intelligence Test, KIDDIE-SADS-PL Kiddie Schedule for Affective Disorders and Schizophrenia for School Aged Children Present Lifetime version (Semi-structured diagnostic interview), DISYPS-II Diagnostic System for Mental Disorders in Childhood and Adolescence (Questionnaire), FFQ Food Frequency Questionaire, HAWIK Hamburger Wechsler Intelligence Test for Children, IPAQ International Physical Activity Questionnaire, SON-R Snijders-Oomen Non-verbal Intelligence Tests, SES Socioeconomic status module from the KIGGS nation-wide German Health Interview and Examination Survey for Children and Adolescents (KiGGS), SUN EXP QUEST Sun Exposure Questionnaire

ISSN: 1471-244X