CHRONIC MYELOID LEUKEMIA
CALCULATION OF RELATIVE RISK (RR)
 
Age:   years
Spleen:   maximum distance from costal margin cm x 10 (e.g. 6 cm = 60)
Platelet:   Plt 109 L  ( e.g 350000 ml = 350 )
Blood Basophils:   % x 10 ( e.g. 1.5% = 15 )
Blood Eosinophils:   % x 10 ( e.g 2.6% = 26 )
Blood Myeloblasts:   % x 10 ( e.g 0.7% = 7 )
 
 
Sokal RR: 
Hasford RR: 
 
- Sokal JE et al, Blood 63: 789 (1984), Seminars in Hematology; 25:49 (1988)
- Hasford J et al, Journal of the National Cancer Institute; 90:850 (1998)
Notice
Spleen size, platelet count and differential must be measured and performed before any treatment. Neither formulation can be used to asses the RR of pretreated or late chronic phase patients