Table 4. Characteristics associated with a history of lymphoma.

	Patient with history of lymphoma (n = 16)	Patients without history of lymphoma (n = 377)	P value
BAFF, pg/ml	1173.3(873.1–3665.5)	898.9 (715.9–1187.2)	0.01
Beta2- microglobulin, mg/l	2.6 (2.2–2.9)	2.1 (1.8–2.6)	0.04
Cryoglobulinemia	35.7%	16.7%	0.2
Low C4 (< 0.15 g/l)	57.1%	17.9%	0.003
CD4+T lymphocytopenia (<300 cells/µl)	28.5%	8.7%	0.06
CD4/CD8 ratio<0.8	28.5%	4.8%	0.01

Results are expressed as medians (25^th–75^th percentiles) unless otherwise specified.