Introduction
Methods
Design
Subjects
Procedures
Measures
Demographic Characteristics
Physical Characteristics
Pain intensity
Disability
Health
Activity level
Psychological Characteristics
Mental health
Acceptance
Avoidance
Self-efficacy
Catastrophizing
Work Characteristics
Statistical Analysis
Results
Description of SAW and SL-Rehab Group
Instrument | Unit or scale | SAW (n = 119) Mean (sd) | SL-Rehab (n = 122) Mean (sd) | n | Effect size |
P-value |
---|---|---|---|---|---|---|
Demographic characteristics
| ||||||
Age | Years | 51 (44–54) | 39 (32–48) | 122 | 0.001r
| |
Gender male | % | 40.3 | 46.0 | 122 | 0.380q
| |
Married/co-habitation | % | 90 | 72 | 122 | 0.001q
| |
Educational level | % | 106 | 0.001q
| |||
Low | 11 | 30 | ||||
Medium | 56 | 49 | ||||
High | 33 | 21 | ||||
Diagnosis region | % | 122 | 0.006q
| |||
Back | 53 | 66 | ||||
Neck/shoulders | 13 | 18 | ||||
Fibromyalgia | 23 | 7 | ||||
Othera
| 11 | 9 | ||||
Duration of pain | % | 96 | 0.001q
| |||
1–2 years | 8.4 | 34.4 | ||||
2–5 years | 10.9 | 17.8 | ||||
>5 years | 80.7 | 47.8 | ||||
Pain medication (yes) | % | 39.5 | 85.1 | 73 | 0.001q
| |
Frequency use pain medication | % | 51 | 0.001q
| |||
≤3/month | 65 | 10 | ||||
1–6/week | 21 | 13 | ||||
≥1/day | 14 | 77 | ||||
Physical characteristics
| ||||||
NRS current painb
| 0–10 | 4.6 (2.1) | 6.1 (1.9) | 114 | 0.8 | 0.001 |
NRS worst pain | 0–10 | 6.9 (1.8) | 8.0 (1.4) | 88 | 0.7 | 0.001 |
PDIc
| 0–70 | 19.9 (11.1) | 39.2 (11.2) | 92 | 1.7 | 0.001 |
RAND 36d
| ||||||
Physical functioning | 0–100 | 72.8 (17.9) | 48.0 (19.8) | 1.3 | 0.001 | |
Role limitations (physical) | 0–100 | 50 (0–100) | 0 (0–0) | 93 | 1.2 | 0.001r
|
Pain | 0–100 | 55.4 (15.5) | 36.6 (17.0) | 93 | 1.2 | 0.001 |
General health perception | 0–100 | 62.9 (17.7) | 58.2 (18.9) | 93 | 0.3 | 0.072 |
Health changes | 0–100 | 46.6 (18.7) | 32.8 (24.8) | 93 | 0.6 | 0.001 |
Physical component summary | 0–100 | 59.8 (17.0) | 38.5 (12.7) | 93 | 1.4 | 0.001 |
BPAQe
| ||||||
Work | 1–5 | 2.7 (0.6) | 3.2 (0.6) | 116 | 0.8 | 0.001 |
Sport | 1–5 | 2.6 (0.8) | 2.3 (0.6) | 118 | 0.4 | 0.004 |
Leisure time | 1–5 | 3.1 (0.6) | 3.0 (0.6) | 118 | 0.2 | 0.108 |
Total activity level | 3–15 | 8.4 (1.2) | 8.5 (1.1) | 116 | 0.1 | 0.625 |
Psychological characteristics
| ||||||
RAND 36d
| ||||||
Social functioning | 0–100 | 78.7 (18.8) | 56.2 (24.3) | 93 | 1.0 | 0.001 |
Role limitations (emotional) | 0–100 | 100 (100–100) | 67 (0–100) | 93 | 0.8 | 0.001r
|
Mental health | 0–100 | 75.4 (16.4) | 63.6 (16.2) | 93 | 0.7 | 0.001 |
Vitality | 0–100 | 58.1 (18.3) | 43.9 (16.9) | 93 | 0.8 | 0.001 |
Mental component summary | 0–100 | 74.1 (17.0) | 54.6 (20.2) | 93 | 1.0 | 0.001 |
SCL90-Rf
| ||||||
Anxiety | 10–50 | 12 (10–14) | 14 (12–17) | 108 | 0.5 | 0.001r
|
Phobic anxiety | 7–35 | 7 (7–8) | 7 (7–9) | 108 | 0.4 | 0.050r
|
Depression | 16–80 | 20 (17–25) | 26 (21–35) | 108 | 0.6 | 0.001r
|
Somatization | 12–60 | 20.9 (5.7) | 25.5 (6.3) | 108 | 0.8 | 0.001 |
Obsessive–compulsive | 9–45 | 14.8 (4.3) | 20.8 (11.3) | 108 | 0.7 | 0.001 |
Interpersonal sensitivity | 18–90 | 22 (19–28) | 24 (20–31) | 108 | 0.2 | 0.189r
|
Hostility | 6–30 | 7 (6–7) | 8 (7–9) | 108 | 0.6 | 0.001r
|
Sleep disturbance | 3–15 | 5 (4–7) | 7 (5–11) | 108 | 0.5 | 0.001r
|
Psychoticism | 9–45 | 10 (9–12) | 12 (10–14) | 108 | 0.4 | 0.003r
|
Global severity index | 90–450 | 118 (105–141) | 142 (123–177) | 108 | 0.7 | 0.001r
|
CPAQg
| ||||||
Activity engagement | 0–66 | 43.5 (7.2) | 34.6 (9.6) | 118 | 1.0 | 0.001 |
Pain willingness | 0–54 | 28.7 (7.5) | 21.4 (7.1) | 118 | 1.0 | 0.001 |
Total score | 0–120 | 72.2 (11.7) | 56.4 (13.1) | 118 | 1.3 | 0.001 |
TSKh
| 17–68 | 33.0 (7.2) | 37.2 (8.1) | 107 | 0.5 | 0.001 |
PSEQ self efficacyi
| 0–60 | 46.9 (8.5) | 35.5 (12.0) | 121 | 1.1 | 0.001 |
PCSj
| 0–52 | 10.5 (8.6) | 21.6 (10.4) | 77 | 1.2 | 0.001 |
Rumination | 0–16 | 4.7 (3.6) | 8.2 (3.9) | 77 | 0.9 | 0.001 |
Magnification | 0–12 | 1.2 (1.6) | 3.1 (2.4) | 77 | 0.9 | 0.001 |
Helplessness | 0–24 | 4.5 (4.1) | 10.1 (4.8) | 77 | 1.3 | 0.001 |
UCLk
| ||||||
Active coping | 7–28 | 19.3 (3.4) | 17.7 (3.4) | 109 | 0.5 | 0.001 |
Palliative reaction | 8–32 | 17.7 (3.4) | 17.6 (3.7) | 109 | 0.0 | 0.768 |
Avoidance | 8–32 | 16.2 (3.4) | 15.8 (3.2) | 109 | 0.1 | 0.305 |
Social support | 6–24 | 13.1 (3.6) | 12.8 (3.4) | 109 | 0.1 | 0.508 |
Passive coping | 7–28 | 10.9 (3.0) | 12.0 (3.1) | 109 | 0.4 | 0.012 |
Expression of emotions | 3–12 | 5.7 (1.5) | 5.3 (1.6) | 109 | 0.3 | 0.049 |
Coping self statements | 5–20 | 12.6 (2.7) | 11.9 (2.6) | 109 | 0.3 | 0.042 |
MPIl
| ||||||
Life control | 0–6 | 5.0 (4.7–5.7) | 4.0 (3.0–5.0) | 119 | 0.9 | 0.001r
|
Mood | 0–6 | 4.7 (3.7–5.3) | 3.7 (2.7–5.0) | 120 | 0.6 | 0.001r
|
Support | 0–6 | 4.0 (3.0–4.9) | 5.0 (4.0–5.3) | 100 | 0.6 | 0.001r
|
Punishing responses | 0–6 | 1.0 (0.3–1.7) | 1.3 (0.3–2.7) | 100 | 0.3 | 0.029r
|
Solicitous responses | 0–6 | 2.3 (1.1) | 2.8 (1.0) | 100 | 0.5 | 0.001 |
Distracting responses | 0–6 | 2.4 (1.4) | 2.9 (1.2) | 99 | 0.4 | 0.012 |
Work characteristics
| ||||||
Expected to work last week | Hours | 31.5 (7.8) | 35.0 (11.1) | 122 | 0.4 | 0.007 |
Actually worked last week | Hours | 32.5 (10.4) | 11.3 (13.8) | 113 | 1.7 | 0.001 |
HPQ presenteeismm
| 0–100 | 76.9 (11.1) | 46.7 (29.5) | 89 | 1.4 | 0.001 |
HPQ relative presenteeism | 0.25–2 | 1.1 (0.3) | 0.75 (0.4) | 85 | 1.0 | 0.001 |
Employment | % | 114 | 0.260q
| |||
Part-time | 49.6 | 42.2 | ||||
Full-time | 50.4 | 57.8 | ||||
Sick leave | % | 122 | 0.001q
| |||
<5% | 100 | 0 | ||||
5–20% | 0 | 16.5 | ||||
21–50% | 0 | 20 | ||||
>50% | 0 | 63.5 | ||||
Vocational sector | % | 115 | ||||
Industry | 8 | 13 | ||||
Construction | 1 | 8 | ||||
Trade | 9 | 18 | ||||
Transport | 4 | 5 | ||||
Commercial services | 9 | 7 | ||||
Education | 13 | 7 | ||||
Health care | 34 | 25 | ||||
Public administration | 13 | 7 | ||||
Agriculture | 4 | 4 | ||||
Other | 5 | 6 | ||||
Work demands | ||||||
Physical demand category work | 122 | 0.007q
| ||||
DOT category 1n
| % | 35 | 20 | |||
DOT category 2 | % | 35 | 33 | |||
DOT category 3 | % | 24 | 29 | |||
DOT category 4 | % | 6 | 18 | |||
VBBAo
| ||||||
Work pace | 0–100 | 41.3 (13.9) | 45.8 (15.2) | 111 | 0.3 | 0.023 |
Emotional load | 0–100 | 31.9 (15.1) | 25.8 (15.1) | 111 | 0.4 | 0.003 |
Relation with colleagues | 0–100 | 0 (0–11) | 0 (0–11) | 109 | 0.0 | 0.560r
|
Relation with supervisor | 0–100 | 0 (0–11) | 0 (0–11) | 106 | 0.1 | 0.710r
|
Work satisfaction | 0–100 | 0 (0–11) | 0 (0–22) | 110 | 0.3 | 0.024r
|
Need for recovery | 0-100 | 45 (18–73) | 64 (18–82) | 109 | 0.3 | 0.020r
|
VBAp
| 21–84 | 43.1 (10.4) | 52.5 (12.3) | 112 | 0.8 | 0.001 |
Hypotheses Tested
Instrument | Hypothesis | n | B |
P-value | Exp(B) | 95% CI Exp(B) |
---|---|---|---|---|---|---|
Physical characteristics | ||||||
H1: Activity levela
| SAW > SL-Rehab | 193 | −0.10 | 0.597 | 0.91 | [0.64–1.30] |
Psychological characteristics | ||||||
H2: Fear avoidanceb
| SAW < SL-Rehab | 190 | −0.06 | 0.028* | 0.94 | [0.90–0.99] |
H3: Pain catastrophizingc
| SAW < SL-Rehab | 165 | −0.07 | 0.005* | 0.93 | [0.88–0.98] |
H4: Pain acceptanced
| SAW > SL-Rehab | 196 | 0.10 | 0.001* | 1.11 | [1.06–1.16] |
H5: Psychological distresse
| SAW < SL-Rehab | 190 | −0.01 | 0.082 | 0.99 | [0.98–1.00] |
H7: Pain self efficacyf
| SAW > SL-Rehab | 198 | 0.09 | 0.001* | 1.09 | [1.05–1.14] |
H6: Life controlg
| SAW > SL-Rehab | 196 | 0.48 | 0.012* | 1.62 | [1.11–2.36] |
H8: Active copingh
| SAW > SL-Rehab | 191 | 0.04 | 0.490 | 1.04 | [0.92–1.18] |
Work characteristics | ||||||
H9: Work satisfactioni
| SAW > SL-Rehab | 190 | −0.00 | 0.639 | 1.00 | [0.98–1.01] |
H10: Physical workloadj
| SAW < SL-Rehab | 192 | −0.07 | 0.003* | 0.93 | [0.89–0.98] |
Discriminating Between SAW and SL-Rehab Group
Predictor | B | SE |
P-value | Exp(B) | 95% CI Exp(B) |
---|---|---|---|---|---|
Physical characteristics | |||||
Pain intensity (1 point higher) | −0.61 | 0.17 | 0.001 | 0.55 | [0.39–0.76] |
Pain duration (>5 years) | 1.86 | 0.68 | 0.006 | 6.40 | [1.70–24.00] |
Psychological characteristics | |||||
Pain acceptance (1 point higher) | 0.08 | 0.02 | 0.002 | 1.08 | [1.03–1.14] |
Mental health (1 point higher) | 0.07 | 0.02 | 0.001 | 1.07 | [1.03–1.12] |
Psychological distress (1 point higher) | 0.02 | 0.01 | 0.036 | 1.02 | [1.00–1.04] |
Work characteristics | |||||
Perceived workload (1 point higher) | −0.10 | 0.03 | 0.002 | 0.91 | [0.85–0.97] |