Table 2. Comparison of baseline demographics and clinical and laboratory data between SLE/PH+ group and SLE/PH- group.

Values are presented as mean ± SD or number (%).

SLE, systemic lupus erythematosus; PH, pulmonary hypertension; RVSP, right ventricular systolic pressure; WHO, world health organization; SLEDAI, systemic lupus erythematosus disease activity index; SLICC/ACR, Systemic Lupus International Collaborating Clinics/American College of Rheumatology; C, complement; ds-DNA, double-stranded DNA; SS-A, Sjgren's-syndrome- related antigen A; SS-B, Sjgren's-syndrome-related antigen B; IgG, immunoglobulin G.

^aReference ranges for C3 and C4 are 76 to 139 mg/dL and 12 to 37 mg/dL, respectively.