Integrated mental health care and vocational rehabilitation to improve return to work rates for people on sick leave because of depression and anxiety (the Danish IBBIS trial): study protocol for a randomized controlled trial

Table 4 Primary and secondary outcomes and data collection

	Data source	Outcome	Baseline	6-Month follow-up	12-Month follow-up	24-Month follow-up
Primary	DREAM database	Time from baseline to RTW			X
Secondary	DREAM database	Proportion in ordinary work			X
	DREAM database	Time from baseline to RTW		X		X
	DREAM database	Time from the first day of RTW until recurrent sick leave				X
	Questionnaire	Difference in depressive symptoms measured by Beck Depression Inventory-II (BDI-II) [56]	X	X
	Questionnaire	Difference in anxiety symptoms measured by Beck Anxiety Inventory (BAI) [59]	X	X
	Questionnaire	Difference in stress symptoms measured by Cohen et al.’s Perceived Stress Scale (PSS) [80]	X	X
	Questionnaire	Social and work-related function measured by WSAS [61]	X	X

Abbreviations: DREAM Danish Register for Evaluation of Marginalization, RTW Return to work, WSAS Work and Social Adjustment Scale

ISSN: 1745-6215