Table 3.

Work participation and sickness absence during 12-month follow-up (N = 681)

Variables	n	%	median	IQR
Highest level of participation (during follow-up)
Sustainable RTW Non-sustainable RTW Return to non-competitive work No participation	179 18 32 452	26 3 5 66
Median days until sustainable RTW
All participation levels Sustainable RTW	681 179	100 26	365^b 185	335–365 94–262
Duration of sickness absence
<12 months ≥ 12 months^a Unknown	314 343 24	46 50 4
Duration of sickness absence in participants with sustainable RTW (N = 179)
<12 months sickness absence ≥ 12 months sickness absence^a Unknown	145 24 10	81 13 6
Duration of sickness absence in participants without sustainable RTW (N = 502)
<12 months sickness absence ≥ 12 months sickness absence^a Unknown	169 319 14	34 64 3
Median days of sickness absence period
All participants (with available sickness absence data) Participants with < 12 months sickness absence Participants with sustainable RTW (with available sickness absence data)	657 314 169	96 46 25	365 144 156	149–365 82–240 87–269

^a Participants who were still sick-listed after 12-month follow-up (end of studies)

^b The median is 365 days because < 50% returns to work during 12-month follow-up