Table 1

Characteristics of the patients

CharacteristicSerum available (n = 30)No serum available (n = 60)P
Median age, y48.158.6<.001
Age range, y30-6837-79
Male sex, n (%)29 (96.7)32 (53.3)<.001
Race, n (%)
    White16 (53.3)39 (65.0).36
    Black14 (46.7)21 (35.0)
Isotype, n (%)
    IgG23 (76.7)34 (56.7).007
    IgA0 (0)14 (23.3)
    IgD3 (10.0)2 (3.3)
    Light chain2 (6.7)8 (13.3)
    Nonsecretory2 (6.7)2 (3.3)
ISS stage, n (%)
    112 (52.2)26 (51.0).90
    26 (26.1)11 (21.6)
    35 (21.7)14 (27.5)
β2-microglobulin, mg/L (range)2.9 (1.3-10.8)2.8 (0.9-13.9).53
Bone marrow plasma cells, % (range)50 (2-95)50 (1-95).64
Time to transplantation, d (range)207 (80-1255)273 (88-2709).014