Table 1.
Mild
|
High
|
||||
---|---|---|---|---|---|
Symptom | Time 1 (n = 242) | Time 2 (n = 242) | Time 1 (n = 148) | Time 2 (n = 148) | Overall mean Time 1/time 2 |
Headaches | 0.85 ± 0.98 | 0.85 ± 0.97 | 2.11 ± 0.91 | 1.77 ± 0.98* | 1.33/1.20 |
Eyes or vision | 0.51 ± 0.79 | 0.67 ± 0.83 | 1.36 ± 0.94 | 1.45 ± 0.94 | 0.83/0.96 |
Ears or hearing | 0.55 ± 0.83 | 0.69 ± 0.89 | 1.37 ± 1.05 | 1.30 ± 1.01 | 0.86/0.93 |
Nose or sinuses | 0.86 ± 1.02 | 0.94 ± 1.01 | 1.86 ± 1.07 | 1.74 ± 1.11 | 1.24/1.25 |
Multiple chemical sensitivities | 0.39 ± 0.74 | 0.51 ± 0.86 | 1.51 ± 1.12 | 1.57 ± 1.17 | 0.81/0.92 |
Mouth, teeth, and gums | 0.41 ± 0.75 | 0.50 ± 0.83 | 1.25 ± 1.11 | 1.22 ± 1.08 | 0.73/0.77 |
Ability to taste | 0.06 ± 0.26 | 0.12 ± 0.39 | 0.69 ± 0.90 | 0.70 ± 0.89 | 0.30/0.34 |
Difficulty swallowing | 0.11 ± 0.41 | 0.21 ± 0.56 | 0.72 ± 0.85 | 0.73 ± 0.93 | 0.34/0.41 |
Throat problems | 0.22 ± 0.55 | 0.26 ± 0.64 | 1.03 ± 1.04 | 0.84 ± 0.94 | 0.53/0.48 |
Swollen glands | 0.18 ± 0.46 | 0.25 ± 0.58 | 1.01 ± 1.05 | 0.79 ± 0.94 | 0.49/0.46 |
Difficulty breathing | 0.33 ± 0.66 | 0.36 ± 0.69 | 1.45 ± 1.00 | 1.03 ± 0.95* | 0.75/0.62 |
Coughing | 0.38 ± 0.65 | 0.46 ± 0.74 | 1.39 ± 1.07 | 1.21 ± 1.06 | 0.76/0.74 |
Chest discomfort | 0.43 ± 0.74 | 0.48 ± 0.75 | 1.56 ± 0.94 | 1.33 ± 1.01 | 0.86/0.80 |
Irregular heartbeat | 0.16 ± 0.52 | 0.29 ± 0.62 | 0.71 ± 1.03 | 0.71 ± 0.91 | 0.37/0.45 |
Arms, hands, and shoulders | 0.55 ± 0.87 | 0.67 ± 0.87 | 1.82 ± 1.08 | 1.63 ± 1.03 | 1.03/1.03 |
Back problems | 0.70 ± 0.90 | 0.86 ± 0.98 | 1.78 ± 1.01 | 1.75 ± 1.11 | 1.11/1.20 |
Nausea | 0.18 ± 0.45 | 0.21 ± 0.56 | 0.99 ± 0.95 | 0.84 ± 0.93 | 0.49/0.45 |
Vomiting | 0.05 ± 0.25 | 0.09 ± 0.40 | 0.47 ± 0.77 | 0.39 ± 0.73 | 0.21/0.20 |
Stomach or digestive problems | 0.52 ± 0.86 | 0.69 ± 0.93 | 1.59 ± 1.07 | 1.53 ± 1.08 | 0.93/1.01 |
Diarrhea | 0.39 ± 0.73 | 0.48 ± 0.80 | 1.29 ± 1.08 | 1.21 ± 1.08 | 0.73/0.76 |
Constipation | 0.17 ± 0.51 | 0.24 ± 0.57 | 0.61 ± 0.85 | 0.74 ± 0.95 | 0.33/0.43 |
Abdominal gas | 0.54 ± 0.81 | 0.72 ± 0.95* | 1.74 ± 1.05 | 1.54 ± 1.10 | 0.99/1.03 |
Abdominal pain | 0.29 ± 0.66 | 0.42 ± 0.74 | 1.41 ± 0.98 | 1.26 ± 1.04 | 0.72/0.74 |
Frequent or painful urination | 0.16 ± 0.46 | 0.24 ± 0.66 | 0.74 ± 0.95 | 0.69 ± 0.90 | 0.38/0.41 |
Muscle aches or cramps | 0.57 ± 0.81 | 0.82 ± 0.93* | 1.95 ± 0.86 | 1.81 ± 1.06 | 1.09/1.19 |
Sexual or genital problems | 0.21 ± 0.52 | 0.28 ± 0.67 | 0.97 ± 1.12 | 0.93 ± 1.10 | 0.50/0.53 |
Numbness or tingling | 0.47 ± 0.73 | 0.70 ± 0.86* | 1.80 ± 0.89 | 1.72 ± 1.08 | 0.97/1.08 |
Pain in arms and legs | 0.57 ± 0.82 | 0.79 ± 0.95* | 2.11 ± 0.87 | 1.88 ± 1.06 | 1.15/1.20 |
Pain in more than one joint | 0.71 ± 0.92 | 0.86 ± 0.99 | 2.17 ± 0.88 | 2.05 ± 1.00 | 1.27/1.31 |
Skin (including rashes) | 0.74 ± 0.95 | 0.68 ± 0.98 | 1.69 ± 1.12 | 1.37 ± 1.15 | 1.10/0.94 |
Hair problems | 0.18 ± 0.51 | 0.21 ± 0.61 | 0.81 ± 1.03 | 0.72 ± 1.00 | 0.42/0.40 |
Cuts or sores | 0.34 ± 0.66 | 0.33 ± 0.70 | 1.04 ± 1.06 | 0.91 ± 1.06 | 0.61/0.55 |
Fainting spells | 0.05 ± 0.26 | 0.06 ± 0.29 | 0.32 ± 0.73 | 0.24 ± 0.56 | 0.15/0.13 |
Losing balance/dizziness | 0.38 ± 0.64 | 0.52 ± 0.77 | 1.43 ± 1.04 | 1.27 ± 0.93 | 0.78/0.80 |
Difficulty concentrating | 0.62 ± 0.81 | 0.81 ± 0.89* | 1.99 ± 0.90 | 1.87 ± 0.91 | 1.14/1.21 |
Difficulty remembering | 0.81 ± 0.90 | 1.04 ± 0.94 | 2.13 ± 0.88 | 2.11 ± 0.94 | 1.31/1.45 |
Feeling sickly | 0.31 ± 0.59 | 0.42 ± 0.74 | 1.59 ± 0.98 | 1.37 ± 0.99 | 0.80/0.78 |
Unrefreshing sleep | 1.01 ± 0.95 | 1.14 ± 0.97 | 2.48 ± 0.73 | 2.26 ± 0.83* | 1.57/1.57 |
Sleeping more than usual | 0.54 ± 0.82 | 0.54 ± 0.86 | 1.62 ± 1.21 | 1.28 ± 1.20* | 0.95/0.82 |
Fatigue (not from exercise) | 0.92 ± 0.87 | 1.04 ± 0.98 | 2.34 ± 0.81 | 2.18 ± 0.81 | 1.46/1.47 |
Fatigue after exercise | 0.37 ± 0.71 | 0.55 ± 0.86 | 1.82 ± 1.06 | 1.74 ± 1.13 | 0.92/1.00 |
Unexplained weakness | 0.39 ± 0.64 | 0.48 ± 0.79 | 1.91 ± 0.98 | 1.72 ± 1.04 | 0.96/0.95 |
Feeling anxious | 0.61 ± 0.76 | 0.71 ± 0.91 | 2.00 ± 0.95 | 1.74 ± 1.01 | 1.14/1.10 |
Sudden mood changes | 0.64 ± 0.81 | 0.72 ± 0.90 | 2.11 ± 1.02 | 1.80 ± 1.07* | 1.20/1.13 |
Sensitivity to heat or cold | 0.37 ± 0.71 | 0.44 ± 0.80 | 1.49 ± 1.18 | 1.34 ± 1.18 | 0.79/0.78 |
Fever or chills | 0.14 ± 0.42 | 0.19 ± 0.52 | 1.09 ± 1.05 | 0.84 ± 0.92 | 0.50/0.44 |
Sweating | 0.31 ± 0.73 | 0.48 ± 0.84 | 1.39 ± 1.10 | 1.28 ± 1.11 | 0.72/0.79 |
Feeling depressed or blue | 0.59 ± 0.80 | 0.71 ± 0.98 | 1.95 ± 1.00 | 1.61 ± 1.09* | 1.11/1.05 |
Significantly different from time 1 to time 2 within highly symptomatic and mildly symptomatic clusters.