Table 2.

Time to first flare

Concomitant medications group	Treatment arm	Probability of an event (95% CI) by Week 52, %	Hazard ratio (95% CI)
Steroids only	Placebo (n = 61)	78.1 (67.0, 87.6)	0.64 (0.42, 0.96)
	Belimumab 10 mg/kg (n = 78)	64.3 (53.6, 74.9)
AM only	Placebo (n = 32)	84.4 (70.0, 94.3)	0.82 (0.48, 1.38)
	Belimumab 10 mg/kg (n = 45)	81.6 (68.3, 91.8)
Steroids + AM	Placebo (n = 186)	80.3 (74.2, 85.8)	0.83 (0.65, 1.06)
	Belimumab 10 mg/kg (n = 160)	71.2 (63.9, 78.2)
Steroids + AM + IS	Placebo (n = 139)	87.9 (81.7, 92.7)	0.81 (0.62, 1.05)
	Belimumab 10 mg/kg (n = 133)	82.3 (75.3, 88.3)

AM: antimalarial; CI: confidence interval; IS: immunosuppressant.