Parental chest computerized tomography examination before IVF/ICSI has no impact on pregnancy and neonatal outcomes: a cohort study of 2680 fresh transfer cycles

Table 4 Perinatal outcomes before and after matching

	Before propensity Score Matching			After propensity Score Matching
	CT group	Control group	P-value	CT group	Control group	P-value
Number of cycles	731	1949		670	670
Still birth, n‰	0 (0)	1 (1.13)	0.579	0 (0)	0 (0)
Gestational age (weeks)	37.87 ± 2.23	38.34 ± 1.74	0.001	37.86 ± 2.24	38.49 ± 1.46	0.173
Gender ^a			0.109			0.084
male, n(%)	154 (56.62)	452 (51.02)		144 (56.69)	122 (49.00)
female, n(%)	118 (43.38)	433 (48.87)		110 (43.31)	127 (51.00)
Weight (g) ^b	3273.24 ± 1701.92	3229.60 ± 503.22	0.267	3276.02 ± 1752.75	3241.89 ± 429.292	0.589
Maternal obstetric complications ^c, n(%)	26 (9.89)	72 (8.52)	0.496	24 (9.80)	16 (6.69)	0.215
Neonatal birth defect ^d, n(%)	2 (0.74)	7 (0.79)	0.927	2 (0.79)	2 (0.80)	0.984

^a The gender datum of one baby in the control group is missing
^b The birth weight datum of one baby in the control group is missing
^c The main maternal obstetric complication included placenta previa, premature rupture of amniotic fluid, gestational hypertension, gestational diabetes, hyperthyroidism, hypothyroidism, and so on
^d The neonatal birth defect included pyloric stenosis (1 case), cardiac malformation (4 cases), cheiloschisis (1 case), auricle deformity (2 cases), and hemangioma of the finger (1 case)

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