Table 1.
Respondents’ characteristics.
| n (%) | |
|---|---|
| Maternal age (missing 4) | |
| ≤30 | 290 (38.8) |
| 31–35 | 317 (42.4) |
| ≥36 | 140 (18.7) |
| Education level (missing 4)a | |
| Low | 38 (5.1) |
| Intermediate | 226 (30.3) |
| High | 483 (64.7) |
| Ethnicity (missing 4)b | |
| Dutch | 633 (84.7) |
| Other western | 61 (8.2) |
| Non-western | 53 (7.1) |
| Religious affiliation (missing 10)c | |
| Not religious | 496 (66.9) |
| Religious | 245 (33.1) |
| Health literacy (missing 9)d | |
| Adequate | 643 (86.7) |
| Not adequate | 99 (13.3) |
| Gestational age (missing 5) | |
| ≤10 | 285 (38.2) |
| 11–14 | 425 (57.0) |
| ≥15 | 36 (4.8) |
| Parity (missing 4) | |
| Nulliparous | 372 (49.7) |
| Multiparous | 376 (50.3) |
| Method of conception (missing 6)e | |
| Natural | 671 (90.9) |
| Assisted | 74 (9.9) |
| Screening intention | |
| NIPT | 587 (78.2) |
| FCT | 15 (2.0) |
| No test | 129 (17.2) |
| Not sure | 20 (2.7) |
FCT first-trimester combined test, NIPT non-invasive prenatal test.
aEducation levels categorized as low: elementary school, low level secondary school, or lower vocational training; intermediate: high-level secondary school or intermediate vocational training; high: high vocational training or university.
bEthnicity categorized as Dutch: both parents were born in the Netherlands; other Western: one or both parents were born in Europe (excluding Turkey), North America, Oceania, Indonesia or Japan; non-Western: one or both parents were born in Africa, Latin-America, Asia (excluding Indonesia or Japan) or Turkey. Maternal country of birth was leading if both parents were born abroad.
cReligious affiliation was measured by the question “which denomination or ideology do you consider yourself as?” Answers were dichotomized: having no religious affiliation if answered “none” or having a religious affiliation if an affiliation was selected.
dHealth literacy classified as inadequate if answered anything other than “never” or “occasionally” on one or more questions.
eMethod of conception considered assisted: intrauterine insemination (n = 28), ovulation-induction (n = 21), in vitro fertilization (n = 11), intra-cytoplasmic sperm injection (n = 10) or preimplantation genetic diagnosis (n = 6).