Percentages of positively answered questions for all (SLE and other CTDs excluded) participants, specified per subgroup based on the total number of positive answers, and patients with SLE and CTD
| Question | All n=85 169 | 1 n=24 994 | 2–3 n=16 183 | ≥4 n=2212 | SLE n=46 | Other CTDs n=80 |
| 1. Joint swelling | 4.9 | 6.1 | 12.1 | 32.0 | 28.3 | 30.0 |
| 2. Finger discolouration | 5.7 | 5.9 | 15.4 | 39.6 | 41.3 | 45.0 |
| 3. Ulcers | 6.3 | 6.5 | 16.8 | 45.2 | 41.3 | 25.0 |
| 4. Red rash on cheeks | 2.1 | 1.6 | 5.8 | 19.5 | 41.3 | 12.5 |
| 5. Photosensitivity | 24.1 | 34.5 | 62.4 | 80.1 | 69.6 | 45.0 |
| 6. Pleurisy | 5.6 | 5.0 | 15.4 | 46.1 | 34.8 | 21.3 |
| 7. Alopecia | 6.5 | 5.0 | 19.9 | 50.0 | 34.8 | 15.0 |
| 8. Haematological features | 22.1 | 29.6 | 59.5 | 78.1 | 65.2 | 41.3 |
| 9. Proteinuria | 6.5 | 5.7 | 19.4 | 44.5 | 41.3 | 17.5 |
| 10. Skin lupus | 0.1 | 0 | 0.3 | 2.6 | 67.4 | 12.5 |
| 11. Positive lupus test | 0.1 | 0 | 0.2 | 2.0 | 93.5 | 10.0 |
CTD, connective tissue disease.