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 2 Baseline characteristics (N = 681)

Baseline characteristics	Total (N = 681) n (%)	Brainwork (N = 320) n (%)	Co-WORK (N = 186) N (%)	Cohort (N = 175) (n (%)
Age
<50 years Mean years (SD)	458 (67) 44 (11)	256 (80) 41 (11)	103 (55) 46 (10)	99 (57) 47 (10)
Gender
Female Male	351 (52) 330 (48)	173 (54) 147 (46)	92 (49) 94 (51)	86 (49) 89 (51)
Employment status (baseline)
Unemployed Temporary Agency contract Employed, loss of contract during sickness absence	553 (81) 19 (3) 109 (16)	216 (68) 11 (3) 93 (29)	173 (93) 6 (3) 7 (4)	164 (94) 2 (1) 9 (5)
Psychological symptoms^a
Mild-to-moderate Severe Unknown	131 (19) 319 (47) 231 (34)	39 (12) 50 (16) 231 (72)	51 (27) 135 (73) -	41 (23) 134 (77) -
RTW self-efficacy^b
High Low Unknown	170 (25) 276 (41) 235 (34)	40 (13) 45 (14) 235 (73)	105 (57) 81 (43) -	25 (14) 150 (86) -
Type of study
Brainwork Co-Work Cohort	320 (47) 186 (27) 175 (26)	320 (100) - -	- 186 (100) -	- - 175 (100)
Study allocation
Intervention Control Cohort	258 (38) 248 (36) 175 (26)	164 (51) 156 (49) -	94 (51) 92 (49) -	- - 175 (100)
Expected RTW < 6 months^c(N = 361)	85 (24)	-	20 (11)	65 (37)
Education (low)^c(N = 361)	104 (29)	-	49 (26)	55 (31)

^a Cut-off point based on the median of the GHQ12 (Brainwork participants) and 4DSQ (Cohort and Co-Work participants)
^b Cut-off point based on the median of the RTW-SE scale (Brainwork participants) and ASE-SE subscale (Cohort and Co-Work participants)
^c Expected RTW < 6 months and level of education were not included in the analyses because data were not available for any of the participants from the Brainwork study. Low education level included no education, primary school or lower vocational education

ISSN: 1752-4458