Table 3.

Comparison of Post-Transplant Pregnancy Outcomes on Pregnancies Lasting Longer Than 20 Weeks Gestation to Pretransplant Pregnancies at Increasing Intervals from Time of Transplant

	Post-transplant	Pretransplant						General U.S. population rates
		0–5 Years prior		5–15 Years prior		>15 Years prior
	N = 30	N = 21	p a	N = 66	p a	N = 54	p a
Age at delivery (years)	32.7 (4.0)	28.2 (5.0)	0.007	27.1 (4.1)	<0.0001	20.9 (8.0)	<0.0001
Planned pregnancy (yes)	26 (86.7%)	10 (47.6%)	<0.0001	37 (56.1%)	<0.0001	18 (33.3%)	<0.0001
Stillbirth	0 (0%)	1 (4.8%)	0.41	1 (1.5%)	1.0	2 (3.7%)	0.54	0.59%b
Weeks at delivery	35.7 (2.3)	35.3 (4.7)	0.71	37.8 (2.4)	0.001	38.8 (4.2)	<0.0001
Preterm delivery	21 (70%)	13 (65%)	0.76	18 (27.2%)	<0.0001	12 (22.2%)	<0.0001	10.23%c
Baby weight (g)	2502 (521)	2245 (859)	0.23	2952 (897)	0.003	3311 (816)	<0.0001
Delivery type (% vaginal)	11 (36.7%)	10 (47.6%)	0.56	42 (65.6%)	0.008	35 (64.8%)	0.02	68.3%c
Hypertension	17 (56.7%)	14 (66.7%)	0.56	28 (42.4%)	0.27	23 (42.6%)	0.26
Preeclampsia	15 (50%)	7 (33.3%)	0.27	18 (27.3%)	0.04	12 (22.2%)	0.01
Gestational diabetes	1 (3.3%)	1 (4.8%)	1.0	1 (1.5%)	0.53	4 (7.4%)	0.65

All data presented as n (%).

^a Fisher's exact test for categorical variables and Student's t-test for continuous variables. All in comparison to post-transplant pregnancies.

^b Data from National Vital Statistics Report 2020 on Fetal Death.²⁴

^c Data from National Vital Statistics Report 2019 on Births.²⁵