Platelet count over time. The proportion of the cumulative time spent in platelet response during the 27-month period of the study was 83.3%; 74 of 138 patients (53.6%) were able to attain CR. Although large variability in the platelet counts between visits was observed, the platelet increase was sustained during the period under examination. The blue circles are the median platelet counts, and red bars are the error intervals.