Study protocol for a randomized controlled trial of the effectiveness of adding motivational interviewing or stratified vocational advice intervention to usual case management on return to work for people with musculoskeletal disorders. The MI-NAV study

Table 1 The schedule of enrolment, interventions, and assessments

	STUDY PERIOD
	Enrolment	Allocation	Post-allocation (months)				Long-term
TIMEPOINT	-t₁	0	1	3	6	9	1 year
ENROLMENT
Eligibility screen	X
Informed consent	X
Allocation		X
INTERVENTIONS
Motivational interviewing			X
Stratified vocational advice			X	(X)
Usual case management	X		(X)	(X)	(X)	(X)
QUESTIONNAIRES
Education, marital status, smoking, work expectancy, HLS-N-Q12	X
Work ability, conflicts and well-being at work, medications, physical activity level, STarT MSK, Örebro Musculoskeletal Pain Screening Questionnaire Short Form, Coping from (ÖMPSQ full version), MSK-HQ, iPCQ, work situation, EQ-5D-5L	X			X	X	X	X
Global rating of change, medical/health treatment last 3 months				X	X	X	X
Return to work days							X

HLS-N-Q12 Health Literacy Scale Questionnaire, STarT MSK Start Musculoskeletal tool, MSK-HQ Musculoskeletal Health Questionnaire, iPCQ the Institute for Medical Technology Assessment Productivity Cost Questionnaire, EQ-5D-5L Euro Quality of Life 5 Dimensions 5 Levels

ISSN: 1471-2474