Characteristics Ribociclib plus letrozole Palbociclib plus letrozole
Clinical efficacy
Rate parameter for PFSa 0.045
Shape parameter for OSb 2.110
Scale parameter for OSb 52.278
Overall response ratec 28.74%
Rate parameter for TTDd 0.042
Hazard ratio for PFS 0.524 (0.407, 0.676) 0.580 (0.460, 0.720)
Hazard ratio for TTD - 1.000 (0.730, 1.390)
Hazard ratio for OS 0.682 (0.456, 1.021) 0.813 (0.492, 1.345)
Odds ratio for ORe 1.420 (1.200, 1.66) 1.230 (1.030, 1.440)
Costs (mean monthly)
Drug acquisition £2 950/£1 967/£983 £2 950
Healthcare resource usef PF PD
Healthcare professional visits £255 £302
Hospitalization £147 £1 031
Monitoring £1 £3
Imaging £41 £49
Total £445 £1 384
Subsequent therapy costsg
Second line (endocrine) £6579
Second line (chemotherapy) £1285
Third line (endocrine) £7499
Third line (chemotherapy) £1716
Total cost of subsequent therapies £5823
Monthly subsequent therapy £284
Utility values
Progression-free (response) 0.8345 (0.0068)
Progression-free (SD) 0.8296 (0.0063)
Progressed-disease 0.5050 (0.0443)