Table 1

 Distribution of potential risk factors for cancer among patients treated and not treated with malaria drugs

Malaria drugsp Value
Yes (n = 156)No (n = 79)
AZA, azathioprine; CPM, cyclophosphamide; MTX, methotrexate; SDI, Systemic Lupus International Collaborating Clinics (SLICC) Damage Index, 6 months after diagnosis.
Values are n (%) unless otherwise indicated.
Mean (SD) age at diagnosis (years)34 (14)42 (17)0.001
Males14 (9)12 (15)0.22
AZA52 (33)20 (25)0.26
CPM37 (24)24 (34)0.12
MTX27 (17)3 (4)0.006
Smoking63 (40)24 (30)0.17
SDI
    0129/156 (82)45/79 (56)
    123/156 (15)20/79 (25)<0.001
    >14/156 (3)14/79 (17)
Year of diagnosis
    1975–198519/34 (56)15/34 (44)
    1986–199563/110 (57)47/110 (43)0.001
    1996–200574/91 (81)17/91 (19)