Supplementary Table S1. Sensitivity analysis using different testing kit costs for drug levels and antidrug antibody formation.
Testing kit cost, € Total cost, € QALY Incremental Cost (IG-CG)
Incremental
QALY (IG-CG) ICER
DL ADA CG IG CG IG
16
10
17,37
8 15,312 1.076 1.161 -2066 0.085 Dominant
25
20
17,37
8 15,364 1.076 1.161 -2014 0.085 Dominant
35
30
17,37
8 15,423 1.076 1.161 -1955 0.085 Dominant
Abbreviations: DL: drug level; ADA: antidrug antibody formation; CG, control group; IG: intervention group;
QALY: quality-adjusted life year; ICER: incremental cost-effectiveness ratio.