Table 1.
Baseline characteristics of 79 patients with SLE.
| Characteristic | Value |
|---|---|
| Number of patients | 79 |
| Age, year | |
| Mean | 35.7 ± 14.9 |
| Age group | |
| < 20 | 12 (15.2) |
| 20–29 | 18 (22.8) |
| 30–39 | 18 (22.8) |
| 40–49 | 18 (22.8) |
| ≥ 50 | 13 (16.5) |
| Sex | |
| Women | 68 (86.1) |
| Men | 11 (13.9) |
| Immunosuppressive agentsa | |
| At least one immunosuppressive agent listed below | 68 (86.1) |
| Intravenous cyclophosphamide | 5 (6.3) |
| Mycophenolate mofetil | 22 (27.9) |
| Methotrexate | 3 (3.8) |
| Azathioprine | 6 (7.6) |
| Cyclosporine | 5 (6.3) |
| Tacrolimus | 11 (13.9) |
| Hydroxychloroquine | 42 (53.2) |
| Glucocorticoid | 67 (84.8) |
| Dose, mg/day | |
| ≤ 5 | 31 (46.3) |
| > 5, ≤ 10 | 13 (19.4) |
| > 10, ≤ 20 | 17 (25.4) |
| > 20 | 7 (10.5) |
| Comorbidities | |
| CCI index, mean value | 1.96 ± 1.60 |
| CCI index 0 | 14 (17.7) |
| 1–2 | 39 (49.4) |
| ≥ 3 | 26 (32.9) |
| Previous respiratory diseases during the 6 months prior to hospitalizationb | |
| Yes | 17 (21.5) |
| No | 62 (78.5) |
Values are presented as N (%) or mean ± standard deviation.
Table shows the information at the time of the first flares during study period among the 79 patients with SLE who have experienced a total of 98 SLE flares.
SLE systemic lupus erythematosus, CCI Charlson comorbidity index.
aImmunosuppressive agents which have been prescribed during 6 months before hospitalization.
bRespiratory disease codes were extracted from International Classification of Disease (ICD)-10 codes (I27.8, I27.9, J40.x-J47.x, J60.x-J67.x, J68.4, J70.1, J70.3) for Charlson comorbidity index analysis.