Method γ Total Loss l1 Penalty SSE SSE Increase Cost Penalty Cost
(per patient)
Cost Decrease
Lasso - 348 17 331 - - - -
BLARS 0.1 348 9 317 - 22 1.150 -
  0.2 370 10 325 2.5% 35 0.925 19.6%
  0.5 384 4 368 15.8% 12 0.125 89.1%
  1.0 388 0 388 22.2% 0 0.000 100.0%
Table 7: Components in objective functions for different γ values using BIC as the model selection criterion.
The percentage increase or decrease are compared with the first BLARS model (γ=0.1). Lasso model was fitted without considering cost effect, and the total loss has only two components.