Table 1. Characteristics of 1,003 pregnant women recruited to answer a questionnaire about prenatal examinations.
| Participant characteristics (n = 1,003) | |
|---|---|
| Place of recruitment, n (%) | |
| Stockholm city center (2 districts) | 437 (43.6%) |
| suburban areas (7 districts) | 566 (56.4%) |
| Age, years | |
| mean ± SD | 31.6 ± 5 |
| median | 32 |
| [range] | [16–52] |
| missing values | 6 |
| Gestational age, weeks | |
| mean ± SD | 25.9 ± 9.8 |
| median | 28 |
| [range] | [6–42] |
| missing values | 16 |
| Number of born children, n (%) | |
| 0 | 435 (44.3%) |
| 1–2 | 511 (52.0%) |
| 3–4 | 31 (3.1%) |
| ≥5 | 5 (0.5%) |
| missing values | 21 |
| Number of miscarriages, n (%) | |
| 0 | 655 (66.7%) |
| 1–2 | 239 (24.3%) |
| 3–4 | 33 (3.4%) |
| ≥5 | 4 (0.4%) |
| missing values | 72 |
| Mother tongue, n (%) | |
| Swedish | 763 (78.5%) |
| Arabic | 25 (2.5%) |
| Spanish | 17 (1.6%) |
| Polish | 14 (1.4%) |
| other (60 languages represented) | 153 (15.7%) |
| missing values | 31 |
| Education, n (%) | |
| university, ≥2 years | 680 (67.8%) |
| high-school | 264 (26.3%) |
| elementary school | 36 (3.6%) |
| other | 22 (2.2%) |
| missing values | 1 |
| Performed fetal examinations, n (%) | |
| YES | 844 (84.1%) |
| ultrasound | 662 (78.4%) |
| FCT | 557 (66%) |
| amniocentesis | 21 (2.5%) |
| CVS | 39 (4.6%) |
| other | 29 (3.4%) |
| - NIPT | 9 (1%) |
| missing values | 0 |
FCT = first trimester combined test, CVS = chorionic villus sampling, NIPT = non-invasive prenatal testing.