Skip to main content

Table 2 Changes in work ability-related factors. Within-group changes after ten weeks and nine months compared with baseline.

From: Effects of work ability and health promoting interventions for women with musculoskeletal symptoms: A 9-month prospective study

  Baseline p 1 10-week follow-up 9-month follow-up p 2 p 3
Work ability index (WAI) (7–49)       
Self-efficacy group
Ergonomic group
28 (17–47)
38 (16–49)
0.023 31 (20–49)
39.5 (16–49)
34 (20–48)
40.5 (17–49)
0.574
0.896
0.028
0.983
1. WA relative to lifetime best (0–10)       
Self-efficacy group
Ergonomic group
5 (0–10)
7 (0–10)
0.063 6 (1–10)
8 (0–10)
7 (0–10)
8 (0–10)
0.290
1.000
0.129
0.833
2a. WA/physical demands (1–5)       
Self-efficacy group
Ergonomic group
3 (1–5)
4 (2–5)
0.008 3 (2–5)
4 (1–5)
3 (2–5)
4 (1–5)
0.021
0.405
0.012
0.265
2b.WA/mental demands (1–5)       
Self-efficacy group
Ergonomic group
3 (2–5)
4 (1–5)
0.016 3 (2–5)
4 (1–5)
3 (2–5)
4 (2–5)
0.206
1.000
0.052
0.808
3.Diagnosed diseases (1–7)       
Self-efficacy group
Ergonomic group
5 (2–7)
5 (4–7)
0.501 5 (2–7)
5 (3–7)
5 (3–7)
6 (3–7)
0.458
0.366
0.408
0.458
4. Work impairment (1–6)       
Self-efficacy group
Ergonomic group
2 (1–6)
4.5 (1–6)
0.042 4 (1–6)
5 (1–6)
4 (1–6)
4.5 (1–6)
0.047
0.120
0.119
0.809
5. Sickness absence (1–5)       
Self-efficacy group
Ergonomic group
2 (1–5)
4.5 (1–5)
0.000 2 (1–5)
4 (1–5)
3 (1–5)
4 (1–5)
0.705
0.248
0.058
0.250
6. Belief of work ability (1,4,7)       
Self-efficacy group
Ergonomic group
7 (1–7)
7 (1–7)
0.858 4 (1–7)
4 (1–7)
7 (1–7)
7 (1–7)
0.102
0.564
0.655
0.046
7. Psychological well-being (1–4)       
Self-efficacy group
Ergonomic group
3 (2–4)
3 (1–4)
0.573 3 (1–4)
3 (1–4)
3 (2–4)
3 (1–4)
0.782
0.739
0.052
0.100
Physical strain in work (6–20) *       
Self-efficacy group
Ergonomic group
14 (9–18)
12 (6–15)
0.003 14 (9–17)
12 (6–16)
15 (7–17)
12 (6–16)
0.130
0.459
0.279
0.044
Coping in relation to work       
1. Problem-focused coping (0–100)       
Self-efficacy group
Ergonomic group
75 (50–100)
75 (50–100)
0.596 75 (50–100)
75 (50–100)
88 (50–100)
75 (38–100)
0.672
0.236
0.351
0.714
2. Selective coping (0–100)       
Self-efficacy group
Ergonomic group
38 (0–100)
38 (0–75)
0.556 38 (0–88)
44 (0–62)
38 (0–75)
50 (12–75)
0.420
0.484
0.174
0.109
3. Resigning coping (0–100) *       
Self-efficacy group
Ergonomic group
25 (0–88)
38 (0–62)
0.828 25 (0–88)
38 (0–75)
25 (0–50)
38 (0–62)
0,138
0.541
0.060
0.542
  1. * High values represent a bad level for the items 'physical strain in work' and 'resigning coping'.
  2. A high value is good for all other items.
  3. Data are given as medians (min-max) and as differences within groups.
  4. p 1 = differences between the groups at baseline (Mann Whitney U)
  5. p 2 = baseline compared with 10-week follow-up within the groups (Wilcoxon Signed Ranks Test)
  6. p 3 = baseline compared with 9 month follow-up within the groups (Wilcoxon Signed Ranks Test)