Table 2.

Pregnancy outcomes (proportion of adverse outcomes to the number of exposed pregnancies) of included studies.

Outcomes group	Preterm delivery				Low birth weight				Spontaneous abortion				Congenital abnormalities
	A	B	C	D	A	B	C	D	A	B	C	D	A	B	C	D
Kammerlander et al. (17)	7/90			1/30	4/90			1/30
Zelinkova et al. (18)									3/25			1/25	4/25			0/25
Lichtenstein et al. (19)	4/78			1/40					13/78			3/40	2/78			0/40
Wils et al. (20)	5/60	5/21	4/27	2/50	4/60	5/21	2/27	2/50	3/60	3/21	3/27	4/50	1/60	2/21	1/27	1/50
Katz et al. (21)									11/82			2/82
Schnitzler et al. (22)	10/72	9/41	10/48	3/52	6/72	8/41	2/48	2/52	9/72	12/41	5/48	4/52	2/72	4/41	1/48	1/52
Weber-Schoendorfer et al. (23)	20/85	19/27	8/30	6/80	3/85	6/27	6/30	4/80	13/85			6/80	3/85			1/80
Clowse et al. (24)	5/98	6/53	3/47	4/198	2/98	3/53	2/47	4/198	10/98	9/53	4/47	10/198	3/98	5/53	1/47	2/198
Moens et al. (25)	14/136	10/40	4/24	10/86	16/136	12/40	4/24	7/86	18/136	6/40	4/24	9/86	4/136	3/40	1/24	2/86
Casanova et al. (26)	1/15			1/15	1/15			1/15	2/15			1/15	1/15			0/15
de Lima et al. (27)	5/63			2/55	6/63			2/55					2/63			1/55

A, exposed to anti-TNF; B, exposed to anti-integrins; C, exposed to anti-interleukins; D, without biologics.