EFS for patients with intermediate-risk ALL according to race.

The probability of surviving event free is highest for those classified as white, lowest for those classified as black, and intermediate for the other groups. The numbers of patients remaining in follow-up at 6 years and 9 years were, respectively, 690 and 95 for whites; 95 and 10 for Hispanics; 18 and 2 for blacks; and 46 and 9 for others.