Predictors of time until return to work and duration of sickness absence in sick-listed precarious workers with common mental disorders: a secondary data-analysis of two trials and one cohort study

Table 1 Data sources

Variable	Registered data	Self-reported questionnaires
Age	X (Brainwork)	X
Gender	X (Brainwork)	X
Employment status	X
Education level^a		X
Psychological symptoms		X
RTW self-efficacy		X
RTW expectations^a		X
Participation level	X
Time until sustainable RTW	X
Duration of sickness absence^b	X	X (cohort)

^aEducation level and RTW expectations were not included in the regression analyses, because data were not available for the participants of the Brainwork study (Audhoe et al.) [24]
^bBased on first until last day of being sick-listed. The Co-WORK study [23] initially used the number of days between study enrolment until ending of the sickness benefit for ≥ 28 days

ISSN: 1752-4458