Table 2.
Symptom | Percentage of patients experiencing symptoma (%) | P-valueb | ||||||
---|---|---|---|---|---|---|---|---|
Baseline | Weeks 1-4 | Weeks 5-8 | Weeks 9-12 | Weeks 1-12 | Baseline vs weeks 1-4 | Weeks 1-4 vs weeks 9-12 | Baseline vs weeks 9-12 | |
Fatigue | 56.8 | 43.2 | 44.2 | 46.8 | 44.7 | .007 | .811 | .076 |
Myalgias and arthralgias | 64.0 | 38.1 | 53.1 | 60.4 | 50.3 | <.001 | <.001 | .586 |
Weakness | 44.4 | 22.0 | 37.2 | 42.3 | 33.6 | <.001 | <.001 | .838 |
Sleep disturbance | 50.4 | 29.7 | 31.9 | 26.1 | 29.2 | <.001 | .785 | <.001 |
Mood changes | 40.8 | 16.9 | 19.5 | 21.6 | 19.3 | <.001 | .536 | <.001 |
Headaches | 40.0 | 23.7 | 14.2 | 12.6 | 17.0 | .001 | .015 | <.001 |
Sweating | 41.5 | 11.9 | 13.3 | 14.4 | 13.2 | <.001 | .889 | <.001 |
Inability to concentrate | 34.4 | 13.6 | 12.4 | 12.6 | 12.9 | <.001 | .785 | <.001 |
Nausea | 16.8 | 7.6 | 11.5 | 9.9 | 9.6 | .009 | .703 | .092 |
Light-headedness | 13.6 | 7.6 | 8.0 | 3.6 | 6.4 | .203 | .334 | .020 |
Limited ability to work | 34.4 | 37.3 | 29.2 | 32.4 | 33.0 | .887 | .555 | .920 |
Predisposition to illness | 35.2 | 28.0 | 35.4 | 37.8 | 33.6 | .159 | .061 | .945 |
A particular symptom was considered present if reported on at least 50% of the weekly surveys during the specified time interval.
Statistical comparisons were made using logistic mixed effects models.