Table 2.

Pregnancy outcome in studies with various therapeutic regimens

					Successful continuation of pregnancy
First author	Design	N	Sonography at presentation	Intervention	Intervention group	Controls	P value
Mollerw11	Randomised controlled trial	260	No	Medroxyprogesterone (three regimens)	60/123	71/137	0.62
Tognoniw12	Randomised controlled trial	145	No	Hydroxyprogesterone caproate	49/74	50/71	0.58
Berlew13	Randomised controlled trial	300	No	Hydroxyprogesterone caproate	96/154	100/146	0.26
Gerhardw14	Randomised controlled trial	52	Yes	Progesterone	23/26	21/26	0.44
Soltanw16	Randomised controlled trial	35	Yes	Buphenine	19/23	4/12	<0.01
Harrison22	Randomised controlled trial	61	Yes	hCG	14/20	11/21	0.24
Harrison22	Randomised controlled trial	61	Yes	Bed rest	5/20	11/21	0.07
Giobbe23	Retrospective	226	Yes	Bed rest	123/146	64/80	0.41
Ben-Haroush24	Prospective observational	230	Yes	Bed rest	180/200	23/30	0.03