|
Age
|
- ≤ 40 year
|
70 (25%)
|
1
|
-
|
1
|
-
|
| |
- 41-50 year
|
131 (48%)
|
0.89
|
0.47
|
0.54 (0.36-0.80)
|
0.002
|
| |
- > 50 year
|
74 (27%)
|
0.96
|
0.81
|
0.64 (0.41-0.99)
|
0.05
|
|
Gender
|
- female
|
20 (7%)
|
1
|
-
|
1
|
-
|
| |
- male
|
256 (93%)
|
1.25
|
0.45
|
1.59 (0.78-3.21)
|
0.20
|
|
General health
|
- poor health
|
36 (13%)
|
1
|
-
|
1
|
-
|
| |
- good health
|
240 (87%)
|
1.51
|
0.06
|
0.90 (0.54-1.49)
|
0.68
|
|
Marital status
|
- living alone
|
25 (8%)
|
1
|
-
| | |
| |
- living together
|
251 (92%)
|
0.83
|
0.42
|
-
|
-
|
|
Physical Disease-related factorsbody functions
|
|
History of similar symptoms -yes
|
- no
|
108 (39%)
|
1
|
-
|
1
|
-
|
| |
- yes
|
168 (61%)
|
1.50
|
0.004
|
2.20 (1.52-3.18)
|
< 0.001
|
|
Pain severity prev. 6 months
|
mean (sd)
|
5.6 (2.3)
|
0.94
|
0.02
|
0.96 (0.89-1.04)
|
0.32
|
|
Location musculoskeletal symptoms
|
- no symptoms
|
56 (21%)
|
1
|
-
|
1
|
-
|
| |
- upper extremity
|
33 (12%)
|
0.82
|
0.40
|
1.16 (0.64-2.10)
|
0.63
|
| |
- back
|
55 (20%)
|
0.95
|
0.78
|
1.04 (0.63-1.72)
|
0.88
|
| |
- lower extremity
|
23 (8%)
|
0.47
|
0.01
|
0.49 (0.23-1.06)
|
0.07
|
| |
- multiple locations
|
106 (39%)
|
0.58
|
0.003
|
0.72 (0.45-1.17)
|
0.18
|
|
Duration of symptoms
|
- < 2 months
|
107 (39%)
|
1
|
-
|
1
|
-
|
| |
- 2-6 months
|
90 (33%)
|
0.65
|
0.007
|
0.75 (0.50-1.14)
|
0.18
|
| |
- > 6 months
|
77 (28%)
|
0.53
|
< 0.001
|
0.60 (0.38-0.95)
|
0.03
|
|
Functional status neck pain (NDI)
|
- little pain
|
90 (33%)
|
1
|
-
|
1
|
-
|
| |
- medium pain
|
78 (29%)
|
0.76
|
0.11
|
0.72 (0.45-1.16)
|
0.18
|
| |
- much pain
|
103 (38%)
|
0.67
|
0.01
|
0.56 (0.30-1.02)
|
0.06
|
|
Functional status back pain (QBPDS)
|
- little pain
|
87 (34%)
|
1
|
-
|
1
|
-
|
| |
- medium pain
|
90 (34%)
|
0.74
|
0.08
|
1.28 (0.81-2.03)
|
0.29
|
| |
- much pain
|
84 (32%)
|
0.78
|
0.14
|
1.42 (0.75-2.69)
|
0.29
|
|
Interaction: NDI * time
| |
-
|
1.00
|
0.26
|
-
|
-
|
|
Interaction: QBPDS * time
| |
-
|
1.00
|
0.24
|
-
|
-
|
|
Treatment by GP or (para)medical specialist
|
- no
|
36 (13%)
|
1
|
-
| | |
| |
- yes
|
240 (87%)
|
0.86
|
0.46
|
-
|
-
|
|
External Environmental factors
|
|
Hired employee since claim--yes
|
- no
|
173 (62%)
|
1
|
-
| | |
| |
- yes
|
103 (38%)
|
0.84
|
0.22
|
-
|
-
|
|
Financial situation company
|
- not good
|
31 (11%)
|
1
|
-
| | |
| |
- good
|
245 (89%)
|
0.83
|
0.39
|
-
|
-
|
|
Insured daily compensation (Euro)
|
- 0-50
|
56 (21%)
|
1
|
-
|
1
|
-
|
| |
- 50-75
|
97 (36%)
|
1.37
|
0.12
|
1.40 (0.88-2.22)
|
0.16
|
| |
- 75-100
|
90 (33%)
|
1.52
|
0.03
|
1.52 (0.97-2.39)
|
0.07
|
| |
- > 100
|
26 (10%)
|
1.21
|
0.49
|
1.51 (0.80-2.87)
|
0.21
|
|
Deferment period-- > 14 days
|
- ≤14 days
|
161 (58%)
|
1
|
-
|
1
|
-
|
| |
- > 14 days
|
115 (42%)
|
0.70
|
0.01
|
0.83 (0.59-1.17)
|
0.29
|
|
Other factorsMental body functions
|
|
Fear of movement
|
- low fear
|
111 (37%)
|
1
|
-
|
1
|
-
|
| |
- high fear
|
165 (63%)
|
0.73
|
0.03
|
0.94 (0.67-1.33)
|
0.74
|
|
Self-predicted timing RTW
|
- < 1 month
|
56 (21%)
|
1
|
-
|
1
|
-
|
| |
- > 1 month/never
|
82 (30%)
|
0.28
|
< 0.001
|
0.24 (0.15-0.38)
|
< 0.001
|
| |
- no idea
|
134 (49%)
|
0.25
|
< 0.001
|
0.23 (0.15-0.34)
|
< 0.001
|
|
Job satisfaction
|
- not satisfied
|
38 (13%)
|
1
|
-
|
1
|
-
|
| |
- satisfied
|
238 (87%)
|
1.42
|
0.10
|
1.85 (1.13-3.04)
|
0.02
|
|
Perceived intensity of physical work
|
range 1-4, higher is heavier
|
mean: 2.8 (sd 0.76)
|
0.90
|
0.23
|
-
|
-
|
|
Interaction: perceived physical work * time
| |
-
|
1.00
|
0.16
|
-
|
-
|
|
Work pace/quantity (job demands)
|
- low
|
79 (29%)
|
1
|
-
| | |
| |
- medium
|
98 (37%)
|
1.31
|
0.11
|
-
|
-
|
| |
- high
|
91 (34%)
|
1.00
|
0.98
| | |
|
Willingness to participate in a RCT
|
- yes
|
180 (65%)
|
1
|
-
|
1
|
-
|
| |
- no
|
96 (35%)
|
1.59
|
0.001
|
1.41 (1.02-1.92)
|
0.04
|
