Table 2.

Demographics (N =65)

Characteristic, No. (%)	Total
Age (years):
Mean (SD)	6.38 (4.35)
Range	2–19
Sex:
Male	34 (52.3)
Female	31 (47.7)
Race:
Caucasian	57 (87.7)
African American	5 (7.7)
Not reported	3 (4.6)
Ethnicity:
Hispanic	4 (6.2)
Non-Hispanic	57 (87.7)
Not reported	4 (6.2)
Acute Lymphoblastic Leukemia Therapy:
AALL0331	1 (1.5)
AALL0232	8 (12.3)
AALL07P4	6 (9.2)
AALL0932	34 (52.3)
No protocol	6 (9.2)
Other	10 (15.4)
Vincristine Cumulative Dosage Received
Mean (SD)	12.6 mg (4.9)
Vincristine Dosages Received
Mean (SD)	9.3 mg (8.0)