|
PU-QOL-P scale (n items)
|
Internal consistency
|
Mean inter-item correlation
|
Inter-item correlationa
|
Scaling Assumptions -Corrected ITCa
|
|---|
|
Nc
|
Cronbach’s alpha
|
|---|
|
Pain (12)
|
617
|
0.864
|
0.355
|
0.128–0.713
|
0.364–0.642
|
|
Exudate (8)
|
60b
|
0.860
|
0.451
|
−0.024 – 0.865
|
0.337–0.824
|
|
Odour (6)
|
61b
|
0.795
|
0.492
|
−0.017 – 1.000
|
− 0.017 – 0.893
|
|
Sleep (7)
|
333
|
0.937
|
0.682
|
0.540–0.827
|
0.753–0.871
|
|
Movement & mobility (9)
|
177
|
0.963
|
0.744
|
0.593–0.928
|
0.803–0.909
|
|
Daily activities (6)
|
186
|
0.937
|
0.705
|
0.476–0.900
|
0.581–0.914
|
|
Malaise (5)
|
215
|
0.915
|
0.680
|
0.559–0.844
|
0.669–0.846
|
|
Emotional well-being (15)
|
220
|
0.970
|
0.681
|
0.447–0.900
|
0.630–0.869
|
|
Self-consciousness and appearance (7)
|
305
|
0.921
|
0.645
|
0.532–0.786
|
0.695–0.818
|
- SEM standard error mean; IIC inter-item correlation; ITC item-total correlation (corrected for overlap)
- aRange
- bsample n = 62; only patients with a category ≥2 PU complete exudate and odour scale
- cn estimated based on listwise deletion; observations that have one or more missing values across all variables are removed from analysis
