Effectiveness of early part-time sick leave in musculoskeletal disorders

Table 3 Explanatory variables measured at baseline

Assessments by physician
Physical examination	Standardised protocol [12, 13]
Weight	Self-reported
Height	Self-reported
Health-related background information
Diabetes, cardiovascular diseases	Interview by physician
Previous sick leaves	OH data base
Depression	Questionnaire [20]
Quality of life	EQ-5D [21]
Physical work load factors
Handling of loads, repetitive movements, use of hand tools, awkward postures at work	Questionnaire [18, 19]
Background variables
Company	Questionnaire
Occupation
Main work tasks
Education
Job seniority
Work hours
Commuting time
Age
Gender
Marital status
Smoking
Alcohol consumption
Physical exercise
Psychosocial risk factors	Adapted from Copenhagen Psychosocial Questionnaire [22]
Fear avoidance	Questionnaire [23]
Procedural and relational justice	Questionnaire [24]
Effort-reward imbalance	Questionnaire [25]

ISSN: 1471-2474