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. 2023 Oct 10;38(12):2478–2488. doi: 10.1093/humrep/dead200

Table 1.

Participant demographics.

Number (n) %
Age
<18 2 0.04
18–25 932 17.0
26–30 1936 35.3
31–35 1740 31.7
36–40 599 10.9
41–45 135 2.5
46–50 46 0.8
Not answered 92 1.7
Ethnicity
White 4760 86.9
Asian 382 7.0
Black 68 1.2
Mixed 193 3.5
Would rather not say 4 0.1
Other 73 1.3
Not answered 2 0.04
Relationship status
Single 1264 23.1
In a relationship 960 17.5
Cohabiting with a partner 1709 31.2
Married 1494 27.3
Separated 22 0.4
Divorced 28 0.5
Widowed 4 0.07
Not answered 1 0.02
Sexual orientation
Heterosexual 5076 92.6
Lesbian 46 0.8
Bisexual 295 5.4
Other 41 0.8
Prefer not to say 21 0.4
Not answered 3 0.05
Education
No formal qualifications 6 0.1
GCSEs 80 1.5
A Levels 299 5.5
Diploma 211 3.9
Professional qualification 322 5.9
Undergraduate Degree 2668 48.7
Postgraduate Degree 1710 31.2
Doctorate 185 3.4
Not answered 1 0.02
Employment
Employed (full time) 3953 72.1
Employed (part time) 514 9.4
Self-employed 299 5.5
Homemaker 113 2.1
Student 505 9.2
Retired 1 0.02
Unemployed 97 1.8
Not answered 0 0