Table 1: Summary of Effectiveness Probabilities (Percentage of Patients Achieving LDAS)

Biologic Agent %LDAS Source

Abatacept after IR to anti-TNF therapy Induction -Month 12 18.3% ATTAIN + LTE study (Genovese 2007)
Maintenance
Month 18 24.2% ATTAIN + LTE study (Genovese 2007)
Month 24 28% ATTAIN + LTE study (Genovese 2007)

Anti-TNF agents Induction - Month 18 11% REACT trial (Bombardieri 2007)
Maintenance - Month 24 21.5% ATTAIN reanalysis afterIR to 2 anti-TNF agents

Rituximab after IR to anti-TNF therapy Induction -Month 12 18.3% REFLEX + LTE study (Keystone 2007)
Maintenance
Month 18 24.2% REFLEX + LTE study (Keystone 2007)
Month 24 28% Keystone (EULAR 2007)

DMARDS Month 24 5% Clinical experts opinion

IR = Insufficient Response.