| Symptom/ GBB scale | % reporting | n | Mean severity in the total sample | Mean severity in participants reporting the symptom |
|---|---|---|---|---|
| TOTAL GBB-24 sum score | 91.70 | 297 | 36.10 | 58.41 |
| Exhaustion | 88.60 | 287 | 12.46 | 16.57 |
| Tendency to rapid exhaustion | 80.90 | 262 | 2.42 | 2.99 |
| Tiredness | 79.60 | 258 | 2.18 | 2.74 |
| Excessive need for sleep | 71.30 | 231 | 1.93 | 2.71 |
| Weariness | 71.30 | 231 | 1.91 | 2.68 |
| Physical weakness | 70.10 | 227 | 1.90 | 2.72 |
| Concentration disturbance * | 77.50 | 251 | 2.12 | 2.73 |
| Musculoskeletal complaints | 88.30 | 286 | 10.65 | 15.84 |
| Pains in joints and limbs | 75.60 | 245 | 2.14 | 2.83 |
| Backache | 65.40 | 212 | 1.71 | 2.61 |
| Headaches | 62.00 | 201 | 1.56 | 2.51 |
| Pains in neck and shoulders | 70.40 | 228 | 2.00 | 2.84 |
| Head pressure | 62.70 | 203 | 1.63 | 2.60 |
| Heaviness or tiredness in the legs | 66.40 | 215 | 1.62 | 2.45 |
| Cardiovascular complaints | 82.40 | 267 | 7.34 | 13.33 |
| Dizziness | 64.50 | 209 | 1.48 | 2.30 |
| Heavy, rapid or irregular heart-throbbing | 64.20 | 208 | 1.47 | 2.29 |
| Sudden bouts of heart-trouble | 48.50 | 157 | 1.03 | 2.13 |
| Twinges, pains or aching in the chest | 53.70 | 174 | 1.18 | 2.19 |
| Attacks of breathlessness | 48.80 | 158 | 1.06 | 2.16 |
| Sensation of tightness, choking or lumpiness in the throat | 49.70 | 161 | 1.12 | 2.26 |
| Gastrointestinal complaints | 76.50 | 248 | 5.65 | 12.67 |
| Stomach aches | 60.20 | 195 | 1.31 | 2.18 |
| Pressure or heaviness in the stomach | 51.20 | 166 | 1.17 | 2.28 |
| Heartburn | 46.60 | 151 | 1.04 | 2.24 |
| Nausea | 44.10 | 143 | 0.88 | 2.00 |
| Belching | 38.00 | 123 | 0.82 | 2.17 |
| Vomiting | 23.50 | 76 | 0.42 | 1.80 |
| Other, added to the GBB-24 complaints | ||||
| Pain in the face or jaws | 58.30 | 189 | 1.53 | 2.62 |