Table 1. Family Sociodemographic and Fertility Treatment Characteristics by Family Type.

	Egg donation (N = 85)		IVF (N = 65)		Independent samples t test
	M	SD	M	SD	t	p	d
Mother’s age (years)	42.45	4.27	36.95	4.20	7.87	< .001	1.30
Father’s age (years)	43.26	6.23	40.35	6.02	2.87	.01	0.47
Child’s age (months)	11.34	2.15	9.68	1.97	4.88	< .001	0.80
Relationship (years)	12.06	5.25	11.89	4.70	0.21	.83	0.03
					Chi-square
	N (%)		N (%)		χ2	df	p
Sex of child
Female	40 (47)		27 (42)		0.45	1	.50
Male	45 (53)		38 (58)
Multiple rate
Singleton	73 (86)		56 (86)		0.01	1	.94
Twin pair	12 (14)		9 (14)
No. of siblings
0	60 (71)		21 (32)		21.73	1	< .001
1 or more	25 (29)		44 (68)
Mother’s education
School education	20 (27)		20 (32)		0.43	1	.51
Higher education	55 (73)		43 (68)
Father’s education
School education	27 (36)		21 (33)		0.15	1	.70
Higher education	47 (64)		42 (67)
					Mann–Whitney U test
	M	SD	M	SD	U	p	d
Fertility treatment
Decision to have child (years)	6.41	2.97	4.15	2.64	1,433.00	< .001	0.90
No. IVF cycles to conceive child	3.32	2.22	1.78	1.15	1,558.00	< .001	0.80

Note. IVF = in vitro fertilization.