Table 1

Demographic characteristics of all patients and PSM patients stratified by EXIT

	Before PSM			After PSM
	EXIT (n=30)	Non-EXIT (n=86)	P value	EXIT (n=29)	Non-EXIT (n=29)	P value
Outcome
Survival	24 (80%)	51 (59.3%)	0.041	24 (82.8%)	14 (48.3%)	0.006
Death	6 (20%)	35 (40.7%)	0.041	5 (17.2%)	15 (51.7%)	0.006
Gender
Male	18 (60%)	50 (58.1%)	0.859	17 (58.6%)	14 (48.3%)	0.629
Female	12 (40%)	36 (41.9%)	0.859	12 (41.4%)	15 (51.7%)	0.629
Gestational age at diagnosis (week)	24.0 (23.75–30.0)	28.0 (23.0–36.0)	0.098	24.0 (23.5–30.0)	24.0 (22.0–30.5)	0.899
Birth weight (kg)	3.05 (2.60–3.31)	2.96 (2.58–3.32)	0.588	3.09 (2.59–3.31)	3.04 (2.50–3.34)	0.948
Gestational age at birth (week)	37.3 (37.0–37.6)	38.0 (36.0–39.0)	0.066	37.3 (37.0–37.6)	38.0 (35.7–39.0)	0.699
Length of hospital stay (days)	28.5 (18.75–38.25)	11.5 (1.0–19.5)	<0.001*	30.0 (19.00–38.5)	6.00 (1.0–18.5)	<0.001*
Method of delivery (cesarean section)	28 (93.3%)	60 (69.8%)	0.012	27 (93.1%)	20 (69.0%)	0.039
Site
Left	22 (73.3%)	74 (86.0%)	0.112	21 (72.4%)	22 (75.9%)	1
Right	8 (26.7%)	12 (14.0%)	0.112	8 (27.6%)	7 (24.1%)	1
Any portion of liver in chest n=97
Yes	11 (37.9%)	17 (25%)	0.198	11 (37.9%)	11 (37.9%)	1
No	18 (62.1%)	51 (75%)	0.198	18 (62.1%)	18 (62.1%)	1
Surgical repair
Yes	29 (96.7%)	70 (81.4%)	0.082	29 (100%)	25 (86.2%)	0.125
Brindle
Low	9 (30%)	38 (44.2%)	0.151	9 (31.0%)	11 (37.9%)	0.674
Medium	19 (63.3%)	45 (52.3%)		18 (62.1%)	16 (55.2%)
High	2 (6.7%)	3 (3.5%)		2 (6.9%)	2 (6.9%)
Recurrence
Yes	2 (6.7%)	2 (2.3%)	0.275	2 (6.9%)	0 (0%）	0.491

Dichotomous data are presented as number (percentage), continuous data are presented as median (IQR).
*P<0.05 was considered statistically significant.
EXIT, ex utero intrapartum therapy; PSM, propensity score matching.