Table 3 Means and standard deviations at baseline, and at 12-month and 24-month follow-up
| Â | Intervention Group | Control group | p-valueb | ||
|---|---|---|---|---|---|
n | mean (SDa) | n | mean (SDa) | ||
Primary outcomes | |||||
 Need for recovery (0–100) | |||||
  Baseline | 204 | 41.7 (33.6) | 152 | 31.5 (30.7) | 0.00* |
  12 months | 112 | 47.5 (32.4) | 92 | 36.1 (31.4) | |
  24 months | 101 | 45.2 (33.5) | 94 | 43.0 (33.0) | |
 Vitality (0–6) | |||||
  Baseline | 204 | 4.2 (1.3) | 152 | 4.5 (1.1) | 0.00* |
  12 months | 113 | 4.0 (1.3) | 92 | 4.5 (0.9) | |
  24 months | 101 | 4.1 (1.2) | 95 | 4.3 (1.0) | |
Secondary outcomes | |||||
 Psychological demands (4–16) | |||||
  Baseline | 204 | 14.3 (2.2) | 152 | 13.6 (2.0) | 0.00* |
  12 months | 114 | 14.2 (2.0) | 96 | 13.6 (1.9) | |
  24 months | 101 | 14.3 (2.5) | 95 | 14.3 (1.9) | |
 Decision authority (3–12) | |||||
  Baseline | 204 | 8.4 (1.4) | 152 | 8.9 (1.5) | 0.00* |
  12 months | 114 | 8.0 (1.4) | 96 | 8.7 (1.5) | |
  24 months | 101 | 8.3 (1.5) | 95 | 8.8 (1.4) | |
 Developmental possibilities (4–20) | |||||
  Baseline | 204 | 13.3 (2.7) | 152 | 14.1 (2.9) | 0.00* |
  12 months | 114 | 13.4 (2.6) | 96 | 14.1 (2.6) | |
  24 months | 101 | 13.6 (2.9) | 95 | 14.2 (2.5) | |
 Social support colleagues (3–12) | |||||
  Baseline | 204 | 9.3 (1.1) | 152 | 9.3 (1.1) | 0.96 |
  12 months | 111 | 9.0 (1.0) | 91 | 9.1 (0.9) | |
  24 months | 101 | 9.0 (0.8) | 94 | 9.3 (1.1) | |
 Social support supervisor (3–12) | |||||
  Baseline | 204 | 8.2 (1.5) | 152 | 8.1 (1.7) | 0.99 |
  12 months | 111 | 7.7 (1.6) | 91 | 7.9 (1.6) | |
  24 months | 101 | 7.9 (1.7) | 94 | 7.6 (1.9) | |
 Social support management (3–12) | |||||
  Baseline | 204 | 7.2 (1.7) | 152 | 7.6 (1.6) | 0.02* |
  12 months | 111 | 6.8 (1.6) | 91 | 7.2 (1.8) | |
  24 months | 101 | 6.8 (2.0) | 94 | 7.3 (1.8) | |
 Work ability (2–20) | |||||
  Baseline | 204 | 15.3 (2.7) | 152 | 15.9 (2.0) | 0.02* |
  12 months | 108 | 15.4 (2.3) | 91 | 16.1 (2.1) | |
  24 months | 99 | 15.3 (2.3) | 91 | 15.4 (2.1) | |
 Job satisfaction (1–5) | |||||
  Baseline | 204 | 3.3 (0.8) | 152 | 3.7 (0.7) | 0.00* |
  12 months | 107 | 3.5 (0.7) | 90 | 3.8 (0.7) | |
  24 months | 99 | 3.3 (0.8) | 91 | 3.6 (0.7) | |
 Commitment (1–5) | |||||
  Baseline | 204 | 3.6 (.5) | 152 | 3.8 (0.5) | 0.00* |
  12 months | 111 | 3.6 (.5) | 90 | 3.8 (0.6) | |
  24 months | 101 | 3.4 (.7) | 94 | 3.8 (0.5) | |
 Work engagement (0–6) | |||||
  Baseline | 204 | 4.0 (1.2) | 152 | 4.3 (1.0) | 0.00* |
  12 months | 113 | 3.9 (1.2) | 92 | 4.4 (0.9) | |
  24 months | 101 | 3.9 (1.2) | 95 | 4.2 (1.0) | |
 Dedication | |||||
  Baseline | 204 | 4.1 (1.3) | 152 | 4.6 (1.1) | 0.00* |
  12 months | 113 | 4.1 (1.3) | 92 | 4.6 (0.9) | |
  24 months | 101 | 4.1 (1.4) | 95 | 4.5 (1.0) | |
 Absorption | |||||
  Baseline | 204 | 3.7 (1.4) | 152 | 3.9 (1.2) | 0.00* |
  12 months | 113 | 3.7 (1.4) | 92 | 4.0 (1.1) | |
  24 months | 101 | 3.6 (1.4) | 95 | 3.9 (1.1) | |
 Occupational self-efficacy (5–30) | |||||
  Baseline | 204 | 23.5 (3.2) | 152 | 23.9 (2.7) | 0.02* |
  12 months | 113 | 22.5 (3.0) | 92 | 22.8 (3.1) | |
  24 months | 101 | 23.0 (3.4) | 95 | 22.9 (2.9) | |
 Organizational efficacyb (7–35) | |||||
  12 months | 111 | 19.8 (4.8) | 91 | 22.1 (4.6) |  |
  24 months | 101 | 19.7 (4.8) | 94 | 22.0 (4.9) | |