Page 32 - THE PERCEPT STUDY Illness Perceptions in Physiotherapy Edwin de Raaij

Chapter 2
Table 2: Characteristics of patients in reproducibility test-retest assessment.
N=27
Private practice PT
Private practice PT
General hospital
Total
Gender
Male
5
5
7
17
Female
3
3
4
10
Age in years
Mean (SD)
67.7 (7.9)
62.5 (8.8)
62.3 (9.4)
63.7 (8.8)
Range
59-80
49-75
43-73
43-75
GOLD classification
1-2
1-2
2-3-4
Duration of COPD in years
Mean (SD)
12.1 (19.6)
13.1 (21.6)
9.6 (5.9)
11.2 (15.5)
Range
0.75-51.0
1.75-57.0
1.5-19.0
0.8-57
Change in health last 4 weeks
Yes
3
1
1
4
No
4
6
9
19
Non responders
0
2
2
4
PT = physiotherapy.
Table 3: Test-retest reproducibility of the Brief IPQ-DLV.
Item
COPD sample N=27
1 Week
3 Weeks
Kw
SDCindiv
SDCgroup
Kw
SDCindiv
SDCgroup
Consequences
0.73
2.76
0.53
0.65
3.12
0.60
Timeline
0.59
2.45
0.47
0.53
2.45
0.47
Personal control
0.51
3.37
0.65
0.23
3.90
0.75
Treatment control
0.66
2.56
0.49
0.49
2.85
0.55
Identity
0.68
2.95
0.57
0.65
3.04
0.59
Concern
0.75
2.95
0.57
0.74
2.95
0.57
Coherence
0.57
3.04
0.59
0.46
3.21
0.62
Emotional respons
0.57
3.04
0.59
0.46
3.21
0.62
Kw = quadratic weighted Cohen’s kappa; SDCindiv = smallest detectable change in an individual; SDCgroup = smallest detectable change in a group.
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