Table 1.

Characteristics of patients with neutropenia.

Isolated
Neutropenia
Neutropenia/
Lymphopenia
P
Patients, n35135
Neutropenia severity
    Severe6 (17.1)24 (17.8)0.93
    Mild/moderate29 (82.9)111 (82.2)
Age at index date, yrs, mean (SD)38.5 (12.1)38.7 (12.7)0.91
Disease duration, yrs, mean (SD)8.8 (8.6)10.4 (8.9)0.33
Female sex32 (91.4)121 (89.6)0.75
Black race19 (54.3)45 (33.3)0.02*
SLEDAI-2K score, mean (SD)4.0 (3.8)5.2 (4.5)0.17
Low C or anti-dsDNA23 (65.7)91 (67.4)0.85
Azathioprine3 (8.6)37 (27.4)0.02*
Cyclophosphamide0 (0)0 (0)
Methotrexate0 (0)7 (5.2)0.17
MMF7 (20)21 (15.6)0.53
Bacterial infection1 (2.9)5 (3.7)0.81
Viral infection2 (5.7)6 (4.4)0.75
  • Values are presented as n (%) unless indicated otherwise.

  • * P < 0.05. C: complement; MMF: mycophenolate mofetil; SLEDAI-2K: Systemic Lupus Erythematosus Disease Activity Index 2000.