Demographic features of the population and subgroups of patients with LE
| n | Female, n (%) | Age at onset (year), mean (SD) | Course (month), mean (SD) | Family history of LE, n (%) | |
| Overall patients | 2097 | 1848 (88.1) | 30.4 (12.4) | 58.1 (67.1) | 106 (5.1) |
| SLE | 1865 | 1690 (90.6) | 30.2 (12.2) | 58.6 (67.1) | 97 (5.2) |
| CLE | 1648 | 1438 (87.3) | 29.8 (12.1) | 58.3 (66.4) | 84 (5.1) |
| iCLE | 232 | 158 (68.1) | 32.1 (13.7) | 53.6 (67.3) | 9 (3.9) |
| SLE with LSM/CLE with SI | 1416 | 1280 (90.4) | 29.4 (11.8) | 59.1 (66.3) | 75 (5.3) |
| SLE without LSM | 449 | 410 (91.3) | 32.7 (13.0) | 57.0 (69.4) | 22 (4.9) |
| CLE without SI | 232 | 158 (68.1) | 32.1 (13.7) | 53.6 (67.3) | 9 (3.9) |
| ACLE | 1330 | 1222 (91.9) | 29.0 (11.6) | 57.6 (64.2) | 68 (5.1) |
| Localised ACLE | 387 | 363 (93.8) | 29.3 (11.7) | 56.2 (60.1) | 20 (5.2) |
| Generalised ACLE | 943 | 859 (91.1) | 28.8 (11.5) | 58.1 (65.9) | 48 (5.1) |
| SCLE | 160 | 121 (75.6) | 31.1 (12.9) | 58.9 (68.1) | 10 (6.2) |
| Annular SCLE | 95 | 73 (76.8) | 30.9 (13.2) | 57.9 (70.3) | 4 (4.2) |
| Papulosquamous SCLE | 74 | 53 (71.6) | 30.9 (12.1) | 58.1 (62.5) | 7 (9.5) |
| CCLE | 546 | 437 (80.0) | 31.0 (13.0) | 65.1 (72.5) | 35 (6.4) |
| DLE | 311 | 224 (72.0) | 32.4 (13.6) | 64.8 (74.8) | 19 (6.1) |
| CHLE | 262 | 224 (85.5) | 29.4 (12.1) | 71.0 (73.9) | 14 (5.3) |
| LEP | 45 | 39 (86.7) | 28.6 (10.3) | 68.0 (63.2) | 5 (11.1) |
ACLE, acute cutaneous lupus erythematosus; CCLE, chronic cutaneous lupus erythematosus; CHLE, chilblain lupus erythematosus; CLE, cutaneous lupus erythematosus; DLE, discoid lupus erythematosus; iCLE, isolated cutaneous lupus erythematosus; LE, lupus erythematosus; LEP, lupus erythematosus profundus; LSM, lupus erythematosus-specific cutaneous manifestation; SCLE, subacute cutaneous lupus erythematosus; SI, systemic involvement.