Table 1.
Baseline characteristics of a cohort of systemic lupus erythematosus patients, August 2011–July 2012
| Characteristic | N | Overall |
|---|---|---|
| Sociodemographic | ||
| Mean (SD) age at survey | 777 | 46.4 (13.3) |
| Male, n (%) | 777 | 50 (6.4) |
| African-American race, n (%) | 777 | 624 (80.3) |
| Years of education, n (%) | 774 | |
| <12 | 71 (9.2) | |
| 12–15 | 456 (58.9) | |
| 16+ | 247 (31.9) | |
| Employment, n (%) | 776 | |
| Employed | 272 (35.1) | |
| Not employed* | 166 (21.4) | |
| Disabled | 338 (43.6) | |
| Income, n (%) | 754 | |
| <$20,000 | 368 (48.8) | |
| $20–49,999 | 200 (26.5) | |
| ≥$50,000 | 186 (24.7) | |
| Marital status, n (%) | 777 | |
| Never married | 276 (35.5) | |
| Married | 271 (34.9) | |
| Separated/divorced/widowed | 230 (29.6) | |
| Clinical | ||
| Mean (SD) duration of SLE, years | 775 | 13.6 (9.3) |
| Mean (SD) BMI | 774 | 29.0 (7.6) |
| On steroids, n (%) | 746 | 425 (57.0%) |
| Median (IQR) SLAQ score** | 777 | 15 (9–22) |
| Median (IQR) BILD score | 777 | 2 (0–3) |
SD, standard deviation; IQR, interquartile range; BMI, body mass index; BILD, Brief Index of Lupus Damage; SLAQ, Systemic Lupus Activity Questionnaire.
*
Includes retired, student, and homemaker.
**
Excluding the forgetfulness item.