Table 4 Serious infectious events to day 197 and day 365

	Days 1–197			Days 1–365
	Abatacept + MTX (n = 156)	Placebo + MTX (n = 110)	Inflixima + MTX (n = 165)	Abatacept + MTX (n = 156)	Infliximab + MTX (n = 165)
	n (%)	n (%)	n (%)	n (%)	n (%)
Total patients with SAEs	8 (5.1)	13 (11.8)	19 (11.5)	15 (9.6)	30 (18.2)
Infections and infestations	2 (1.3)	3 (2.7)	7 (4.2)	3 (1.9)	14 (8.5)
Pneumonia	2 (1.3)	0	2 (1.2)	2 (1.3)	3 (1.8)
Sinusitis	1 (0.6)	0	0	1 (0.6)	0
Postoperative wound infection	0	1 (0.9)	0	0	1 (0.6)
Soft tissue abscess	0	1 (0.9)	0	0	0
Infective bursitis	0	1 (0.9)	0	0	0
Bronchitis	0	0	1 (0.6)	0	1 (0.6)
Cellulitis	0	0	1 (0.6)	0	1 (0.6)
Gastroenteritis	0	0	1 (0.6)	0	1 (0.6)
Herpes zoster	0	0	1 (0.6)	0	1 (0.6)
Lung infection pseudomonal	0	0	1 (0.6)	0	1 (0.6)
Pneumocystis jiroveci pneumonia	0	0	1 (0.6)	0	1 (0.6)
Infection skin ulcer	0	0	0	1 (0.6)	0
Encephalitis herpetic	0	0	0	0	1 (0.6)
Erysipelas	0	0	0	0	1 (0.6)
Lobar pneumonia	0	0	0	0	1 (0.6)
Peritoneal tuberculosis	0	0	0	0	1 (0.6)
Pulmonary tuberculosis	0	0	0	0	1 (0.6)
Septic shock	0	0	0	0	1 (0.6)