Hazard ratio	95% CI	P-value
Tocilizumab use	3.67	0.24-57.15	0.354
Male gender	1.99	0.42-9.52	0.388
Age ≥65 years	1.50	0.24-9.61	0.666
Exposure to ≥2 biologics	0.19	0.01-2.48	0.204
RA duration >2yr	0.63	0.11-3.47	0.592
Biologic use ≥18 months	2.77	0.51-15.18	0.241
Methotrexate ≥8mg	1.02	0.15-6.76	0.985
Practice Boolean remission	0.44	0.09-2.22	0.318
PSL-free ≥6 months	0.06	0.01-0.60	0.017*