Table 1.

Demographics of ALL Cases by ras mutation

Ras Negative
K-ras and/or N-ras Mutation
K-ras Mutation
N-ras Mutation
n = 710n = 127Pn = 40Pn = 89P
Age (y)
    0-174 (10.4)21 (16.5)0.19012 (30.0)<0.00110 (11.2)1.0
    2-5391 (55.1)70 (55.1)22 (55.0)49 (55.1)
    6-10163 (23.0)24 (18.9)4 (10.0)20 (22.5)
    >1082 (11.5)12 (9.4)2 (5.0)10 (11.2)
Sex
    Male395 (55.6)66 (52.0)0.44421 (52.5)0.69847 (52.8)0.61
    Female315 (44.4)61 (48.0)19 (47.5)42 (47.2)
Immunophenotype
    T-cell92 (13.0)5 (3.9)0.0161 (2.5)0.1594 (4.5)0.04
    Early B-cell431 (60.7)92 (72.4)29 (72.5)64 (71.9)
    Pre–B-cell82 (11.5)12 (9.4)6 (15.0)6 (6.7)
    Unknown105 (14.8)18 (14.2)4 (10.0)15 (16.9)
Maternal race
    White615 (86.6)106 (83.5)0.34332 (80.0)0.23776 (85.4)0.75
    Non-White95 (13.4)21 (16.5)8 (20.0)13 (14.6)
Paternal race*
    White499 (88.0)97 (90.7)0.43229 (90.6)0.65670 (90.9)0.46
    Non-White68 (12.0)10 (9.3)3 (9.4)7 (9.1)
Family income
    <20,000241 (33.9)36 (28.3)0.14012 (30.0)0.69825 (28.1)0.14
    20,000-39,999297 (41.8)50 (39.4)16 (40.0)34 (38.2)
    ≥40,000172 (24.2)41 (32.3)12 (30.0)30 (33.7)
Maternal age26.90 ± 5.3526.83 ± 5.730.89027.33 ± 5.520.62426.60 ± 5.830.62
Paternal age29.61 ± 5.8328.59 ± 5.340.09230.31 ± 5.820.50827.88 ± 4.970.01
  • * Among fathers interviewed directly; paternal information supplied by mothers is not included.