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(A) TTFT of Rai stage 0-II patients (Mayo clinic cohort) based on the original CLL-IPI: Low-risk (CLL-IPI score 0–1); Intermediate-risk (CLL-IPI score 2–3); High-risk (CLL-IPI score ≥ 4).
(B) TTFT of Rai stage 0-II patients (Mayo clinic cohort) based on the revised CLL-IPI: The CLL-IPI risk categories were the following: Low-risk (CLL-IPI score 0); Intermediate-risk (CLL-IPI score 1); High-risk (CLL-IPI score ≥ 2).
