Clinical characteristics in 3 groups of patients with neutropenia.

The age of diagnosis, white blood cell count, ANC, and the number of infectious episodes were compared among 3 groups (A). Data represent the mean ± SD in the age of diagnosis, white blood cell count, and ANC. The infectious complication showed the number of patients presenting mild or severe infections associated with neutropenia. Cumulative incidence of resolution of neutropenia is presented by age and duration of neutropenia in 3 groups (B). Statistical significance was determined by using the log-rank test. The values of statistical significance are as follows: group A versus group B, P < .05; group B versus group C,P < .05; group A versus group B plus group C,P < .01.