Population preference values for health states in relapsed or refractory B-precursor acute lymphoblastic leukemia in the United Kingdom

Table 2 Mean TTO utility values for disease-related health states in B-precursor ALL (n = 123)

Health state	Mean TTO utility value^a	TTO SEM	Increment^b	Increment SEM
Complete remission	0.86	0.01	0.56	0.042
Complete remission with partial hematological recovery	0.75	0.02	0.45	0.038
Aplastic bone marrow	0.59	0.02	0.29	0.034
Partial remission	0.50	0.03	0.20	0.032
Progressive disease	0.30	0.04	–	–

Abbreviations: SEM standard error of the mean, TTO time trade-off
^aHealth state utility values range from 0 to 1; 0 is death and 1 is perfect health
^bProgressive disease was the anchoring health state for calculation of increments