Table 4.
Significant main and interaction effects (except the main effect of cluster membership) for change in symptom severity.
| Source | F(1, 379) | p-Value |
|---|---|---|
| Age | ||
| Arms, hands, shoulders | 21.29 | 0.000 |
| Back problems | 11.64 | 0.001 |
| Frequent or painful urination | 11.88 | 0.001 |
| Sexual or genital problems | 22.07 | 0.000 |
| Pain in arms or legs | 12.28 | 0.001 |
| Pain in more than one joint | 13.60 | 0.000 |
| Race | ||
| Constipation | 13.98 | 0.000 |
| Hair | 11.05 | 0.001 |
| Sweating not due to exercise | 10.70 | 0.001 |
| Time × smoker status | ||
| Mouth, teeth, gums | 11.29 | 0.001 |
| Time × cluster membership | ||
| Headaches | 12.45 | 0.000 |
| Swollen glands in neck or armpit | 10.81 | 0.001 |
| Difficulty breathing | 23.69 | 0.000 |
| Abdominal gas | 15.72 | 0.000 |
| Abdominal pain | 10.68 | 0.001 |
| Muscle aches or cramps | 18.20 | 0.000 |
| Numbness or tingling sensations | 11.52 | 0.001 |
| Pain in arms or legs | 21.78 | 0.000 |
| Difficulty concentrating | 10.85 | 0.001 |
| Feeling sickly | 14.40 | 0.000 |
| Unrefreshing sleep | 13.84 | 0.000 |
| Sleeping more than usual | 12.58 | 0.000 |
| Unexplained weakness | 13.19 | 0.000 |
| Feeling anxious or upset | 16.49 | 0.000 |
| Sudden mood changes | 20.62 | 0.000 |
| Fever or chills | 15.61 | 0.000 |
| Sweating not due to exercise | 12.14 | 0.001 |
| Feeling depressed or blue | 22.87 | 0.000 |