Table 4 Convergent and discriminant construct validity of the CDIP-58
Instrument | Scale/ Dimension/ Variable | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Validity (Correlation) | Head and Neck Symptoms (6 items) | Pain and Discomfort (5 items) | Upper Limb Activities (9 items) | Walking (9 items) | Sleep (4 items) | Annoyance (8 items) | Mood (7 items) | Psycho- social Funct-ioning (10 items) | |
CDIP-58 | Head and Neck Symptoms | ||||||||
Pain and Discomfort | 0.72 a | - | |||||||
Upper Limb Activities | 0.64 | 0.53 | - | ||||||
Walking | 0.63 | 0.65 | 0.79 a | - | |||||
Sleep | 0.50 | 0.53 | 0.54 | 0.50 | - | ||||
Annoyance | 0.63 | 0.55 | 0.60 | 0.56 | 0.52 | - | - | ||
Mood | 0.52 | 0.48 | 0.54 | 0.53 | 0.49 | 0.84 a | - | ||
Psychosocial Functioning | 0.67 | 0.51 | 0.55 | 0.53 | 0.44 | 0.73 a | 0.69 | - | |
SF-36* | Bodily Pain | -0.60 | -0.71 b | -0.72 | -0.62 | -0.59 | -0.54 | -0.51 | -0.48 |
Social Functioning | -0.56 | -0.56 | -0.70 | -0.62 | -0.55 | -0.63 | -0.59 | -0.69 b | |
Physical Functioning | -0.45 | -0.57 | -0.80 b | -0.78 b | -0.53 | -0.43 b | -0.43 b | -0.45 | |
Mental Health | -0.43 | -0.41 b | -0.72 b | -0.40 b | -0.43 | -0.73 b | -0.78 b | -0.60 | |
HADS | Anxiety | 0.34 | 0.39 b | 0.31 b | 0.28 b | 0.31 | 0.54 b | 0.66 b | 0.48 |
Depression | 0.41 | 0.45 b | 0.52 b | 0.51 b | 0.42 | 0.59 b | 0.60 b | 0.50 | |
GHQ** | Anxiety | 0.30 | 0.30 b | 0.34 b | 0.19 b | 0.22 | 0.44 b | 0.50 b | 0.30 |
Depression | 0.35 | 0.29 b | 0.31 b | 0.36 b | 0.18 | 0.53 b | 0.66 b | 0.43 | |
Demo-graphic | Age | -0.05 | -0.03 | -0.02 | 0.01 | 0.00 | -0.04 | -0.07 | 0.00 |
Variables | Sex | -0.04 | -0.17 | 0.02 | -0.07 | 0.00 | 0.06 | 0.04 | 0.02 |
Education | -0.04 | -0.05 | -0.01 | -0.07 | -0.02 | -0.03 | -0.03 | -0.08 |