Table 2

Risk factors for progression to treatment among 48 patients with SWM

Multivariate modelHazard ratioP
Bone marrow lymphoplasmacytic cells1.31 (1.1-1.5)< .001
Hemoglobin value0.7 (0.5-0.9).002
Serum M protein value2.1 (1.3-3.5).003
IgA reduction2.4 (1.1-5.4).036