Overall survival of CLL patients relative to age-matched controls.
 A. Figure shows the survival from diagnosis of 2474 Mayo Clinic patients diagnosed with CLL since January 1995 as compared with the age-matched general Minnesota population. P < .001.
 B. Figure shows the survival from diagnosis of 1282 Mayo Clinic patients diagnosed with Rai stage 0 CLL since January 1995 as compared with the age matched general Minnesota population. P < .001.