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Table 2 Sick leave in the younger 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* 15.2 (5) 12.1 (4) 15.2 (5) 6.1 (2) 51.5 (17) 0.37 .985
IG** 11.4 (4) 11.4 (4) 17.1 (6) 8.6 (3) 51.4 (18)
  Week 10   
Control 45.5 (15) 9.1 (3) 9.1 (3) 0 36.4 (12) 8.58 .035
IG 14.3 (5) 14.3 (5) 22.9 (8) 0 48.6 (17)
  Week 20   
Control 63.6 (21) 3.0 (1) 3.0 (1) 0 30.3 (10) 14.22 .007
IG 28.6 (10) 8.6 (3) 28.6 (10) 5.7 (2) 28.6 (10)
  Week 30   
Control 60.6 (20) 3.0 (1) 6.1 (2) 0 30.3 (10) 13.23 .010
IG 31.4 (11) 8.6 (3) 34.3 (12) 5.7 (2) 20.0 (7)
  Week 40   
Control 66.7 (22) 3.0 (1) 3.0 (1) 0 27.3 (9) 7.77 .100
IG 42.9 (15) 8.6 (3) 20.0 (7) 2.9 (1) 25.7 (9)
  Week 50   
Control 66.7 (22) 0 3.0 (1) 0 30.3 (10) 11.00 .027
IG 45.7 (16) 11.4 (4) 17.1 (6) 5.7 (2) 20.0 (7)
  Week 60   
Control 66.7 (22) 3.0 (1) 3.0 (1) 0 27.3 (9) 5.91 .206
IG 60.0 (21) 8.6 (3) 11.4 (4) 5.7 (2) 14.3 (5)
  Week 70   
Control 60.6 (20) 6.1 (2) 3.0 (1) 0 30.3 (10) 7.79 .099
IG 65.7 (23) 8.6 (3) 14.3 (5) 2.9 (1) 8.6 (3)
  Week 80   
Control 63.6 (21) 0 9.1 (3) 0 27.3 (9) 6.44 .169
IG 71.4 (25) 5.7 (2) 11.4 (4) 2.9 (1) 8.6 (3)
  Week 90   
Control 63.6 (21) 0 6.1 (2) 0 30.3 (10) 5.01 .286
IG 68.6 (24) 5.7 (2) 8.6 (3) 2.9 (1) 14.3 (5)
  Week 100   
Control 63.6 (21) 3.0 (1) 6.1 (2) 0 27.3 (9) 4.68 .197
IG 74.3 (26) 8.6 (3) 8.6 (3) 0 8.6 (3)
  Week 110   
Control 66.7 (22) 3.0 (1) 3.0 (1) 0 27.3 (9) 2.61 .456
IG 71.4 (25) 5.7 (2) 8.6 (3) 0 14.3 (5)
  Week 120   
Control 63.6 (21) 3.0 (1) 3.0 (1) 0 30.3 (10) 4.38 .223
IG 74.3 (26) 5.7 (2) 8.6 (3) 0 20.6 (14)
  Week 130   
Control 69.7 (23) 0 0 0 30.3 (10) 5.21 .157
IG 82.9 (29) 2.9 (1) 2.9 (1) 0 11.4 (4)   
  1. *n = 35.
  2. **n = 33.
  3. The participants were 45 years or younger at their first day of sick leave. Figures show percentages within each group and the corresponding number of persons. Group comparisons with Pearson χ2-test were done on the full range of sick leave steps.