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Table 1 Sick leave in the older halves of the intervention and control groups as a function of weeks

From: Long-term stability of return to work after a workplace-oriented intervention for patients on sick leave for burnout

  Sick leave (%) χ2 P
  0 25 50 75 100   
  Week 0   
Control* 14.3 (5) 5.7 (2) 34.3 (12) 0 45.7 (16) 6.08 .193
IG** 9.1 (3) 12.1 (4) 33.3 (11) 12.1 (4) 33.3 (11)
  Week 10   
Control 34.3 (12) 17.1 (6) 14.3 (5) 2.9 (1) 31.4 (11) 5.83 .212
IG 18.2 (6) 9.1 (3) 36.4 (12) 3.0 (1) 33.3 (11)
  Week 20   
Control 48.6 (17) 8.6 (3) 14.3 (5) 0 28.6 (10) 7.29 .063
IG 18.2 (6) 18.2 (6) 24.2 (8) 0 39.4 (13)
  Week 30   
Control 45.7 (16) 11.4 (4) 11.4 (4) 0 31.4 (11) 5.34 .254
IG 30.3 (10) 21.2 (7) 9.1 (3) 9.1 (3) 30.3 (10)
  Week 40   
Control 48.6 (17) 8.6 (3) 11.4 (4) 2.9 (1) 28.6 (10) 1.81 .771
IG 39.4 (13) 18.2 (6) 15.2 (5) 3.0 (1) 24.2 (8)
  Week 50   
Control 54.3 (19) 8.6 (3) 11.4 (4) 2.9 (1) 22.9 (8) 2.20 .699
IG 45.5 (15) 15.2 (5) 12.1 (4) 9.1 (3) 18.2 (6)
  Week 60   
Control 65.7 (23) 8.6 (3) 5.7 (2) 2.9 (1) 17.1 (6) 3.01 .556
IG 48.5 (16) 12.1 (4) 12.1 (4) 9.1 (3) 18.2 (6)
  Week 70   
Control 68.6 (24) 5.7 (2) 5.7 (2) 0 20.0 (7) 2.67 .445
IG 51.5 (17) 6.1 (2) 15.2 (5) 0 27.3 (9)
  Week 80   
Control 68.6 (24) 5.7 (2) 2.9 (1) 0 22.9 (8) 4.38 .223
IG 57.6 (19) 6.1 (2) 18.2 (6) 0 18.2 (6)
  Week 90   
Control 68.6 (24) 8.6 (3) 5.7 (2) 0 17.1 (6) 2.09 .555
IG 57.6 (19) 6.1 (2) 15.2 (5) 0 19.1 (13)
  Week 100   
Control 68.6 (24) 8.6 (3) 5.7 (2) 0 17.1 (6) 2.19 .701
IG 57.6 (19) 9.1 (3) 12.1 (4) 3.0 (1) 18.2 (6)
  Week 110   
Control 71.4 (25) 5.7 (2) 2.9 (1) 0 20.0 (7) 4.63 .328
IG 54.5 (18) 12.1 (4) 12.1 (4) 3.0 (1) 18.2 (6)
  Week 120   
Control 74.3 (26) 2.9 (1) 5.7 (2) 0 17.1 (6) 3.31 .000
IG 57.6 (19) 9.1 (3) 9.1 (3) 3.0 (1) 21.2 (7)
  Week 130   
Control 77.1 (27) 0 8.6 (3) 0 14.3 (5) 4.94 .176
IG 54.5 (18) 6.1 (2) 15.2 (5) 0 24.2 (8)   
  1. *n = 35.
  2. **n = 33.
  3. The participants were 46 years or older at their first day of sick leave. Figures show percentages within each group and the corresponding number of participants. Group comparisons with Pearson χ2-test were done on the full range of sick leave steps.