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. 2015 Jun 3;30(8):1896–1906. doi: 10.1093/humrep/dev120

Table II.

Motivations to co-parent by gender and sexual orientation.

Male
Female
Total
Heterosexual
Gay/bisexual
Heterosexual
Lesbian/bisexual
Median (interquartile range) n Median (interquartile range) n Median (interquartile range) n Median (interquartile range) n Median (interquartile range) n
I would like my child to know both their ‘biological’ parents 4.5 (1.75) 20 5 (1) 41 5 (1) 18 5 (1) 19 5 (1) 98
I want to know the person who provides the sperm/egg to create my child 4 (2) 16 5 (1) 40 5 (1) 17 5 (1) 18 5 (1) 91
Co-parenting is an ideal situation for bringing up a child 4 (2) 19 4 (1) 40 3 (1) 18 4 (1.25) 18 4 (2) 95
I want the person who provides the sperm/egg to be involved in my child's upbringing 4 (2) 17 5 (2) 41 5 (1) 17 4 (2) 19 4 (2) 94
I do not want to parent alone 4 (1.5) 17 4 (3) 39 4 (1.5) 17 3 (1.5) 18 4 (2) 91
I am getting older 4 (2) 16 4 (2) 35 5 (1) 18 4 (2) 19 4 (2) 88
I am single 4 (1.75) 16 3 (1) 32 5 (1) 16 4 (2) 13 4 (2) 77
To pass on my genes 3 (1.5) 17 4 (2) 37 3.5 (1.25) 14 3 (2.75) 16 4 (1.75) 84
To share the financial cost of parenting 3 (1) 16 3 (1) 38 4 (1) 17 4 (3.75) 16 3 (1) 87
No other option available 3 (1) 16 3 (1.75) 32 4 (2) 17 3 (2) 11 3 (1) 76
No reason not to 3 (0.25) 10 3 (2) 33 3.5 (1.75) 14 3 (1) 14 3 (1) 71
My partner does not want a child 3 (0.25) 10 3 (1) 19 4 (0.75) 4 3 (3.25) 6 3 (1) 39
Family/friends have used sperm/egg donation 3 (0) 11 2 (2.75) 20 1 (2.5) 8 3 (1) 11 3 (3) 50
I do not wish to have a child within a relationship 3 (2) 16 3 (2) 27 2 (3) 10 2 (2) 16 2 (2) 69

Scale ranged from 1‘not at all important’ to 5 ‘very important’.

As not all participants ranked each of the motivations, the sample size comprises those who answered the question.