Table 1.

Frequency of pregnancy-related bleeding in women with factor XI deficiency as documented in observational trials.

Reference	Patients (#SD)/Pregnancies	Antenatal bleeding	Abortion-related bleeding	Postpartum bleeding
Kadir et al. [29]	11 (4 SD)/28	4	1 of 3	4
Myers et al. [28]	33 (3 SD)/105	n/a	2 of 29	9
Chi et al. [26]	30 (2 SD)/61	3	4 of 14	10 (5 primary)
Singh et al. [32]	13 (4 SD)/13	n/a	n/a	2
Verghese et al. [30]	25 (4 SD)/67	2	0 of 16	11 (10 primary)
Gerber et al. [35]	28 (8 SD)/64	3	2 of 11	9 (5 PD/4 SD)

SD, severe deficiency.