Table 5.
Loading of 16 symptoms used in factor analysis
| Symptom | Factor 1 | Factor 2 | Factor 3 |
|---|---|---|---|
| Anxiety and nervousness | .72 | .10 | −.02 |
| Depression | .74 | .05 | .01 |
| Poor memory | .59 | .19 | .06 |
| Difficult concentrating | .73 | .06 | .05 |
| Fatigue | .50 | .29 | −.06 |
| Poor appetite | .42 | .06 | −.24 |
| Insomnia | .53 | .15 | −.35 |
| Headache | .21 | .32 | −.11 |
| Back ache | .07 | .49 | .03 |
| Joint ache | .05 | .68 | .06 |
| Muscle ache | .09 | .66 | −.01 |
| Walking pain in hips | .05 | .61 | .07 |
| Leg cramps | .14 | .47 | −.11 |
| Nocturnal restless legs | .20 | .37 | −.22 |
| Walk pain in knees | .08 | .11 | .87 |
| Cutaneous itching | .22 | .20 | −.21 |