Table 3 Perception of information given and odds (OR) for decision making regarding early prenatal NT* screening or the combined test** for foetal anomalies at week 11–14. Percentages, absolute figures within brackets, odds ratios (OR) and 95% confidence intervals (95% CI)
|  | Number | % | Combined prenatal screening test at week 11–14 | |||
|---|---|---|---|---|---|---|
% | OR | 95% CI | p-value | |||
Information about availability of first trimester ultrasound scan | ||||||
 Enough or too much | 906 | 84.2 (906/1076) | 79.2 (718/906) | 1 | Ref. |  |
 Not enough | 52 | 4.8 (52/1076) | 75.0 (39/52) | 0.79 | 0.41–1.50 | .465 |
 No information | 118 | 11.0 (118/1076) | 72.0 (85/118) | 0.67 | 0.44–1.04 | .075 |
Information about availability of early prenatal screening in week 11–14 | ||||||
 Enough or too much | 938 | 86.8 (938/1081) | 79.6 (747/938) | 1 | Ref. |  |
 Not enough | 69 | 6.4 (69/1081) | 66.7 (46/69) | 0.51 | 0.30–0.87 | .012 |
 None | 74 | 6.8 (74/1081) | 73.0 (54/74) | 0.69 | 0.40–1.18 | .176 |
Information about the potential risk of early prenatal screening in week 11–14 | ||||||
 Enough or too much | 521 | 48.3 (521/1078) | 76.6 (399/521) | 1 | Ref. |  |
 Not enough | 145 | 13.5 (145/1078) | 80.7 (117/145) | 1.28 | 0.81–2.02 | .296 |
 No information | 412 | 38.2 (412/1078) | 80.3 (331/412) | 1.25 | 0.91–1.72 | .168 |
Information about the potential risk associated with foetal prenatal diagnosis | ||||||
 Enough or too much | 509 | 47.2 (509/1079) | 78.0 (397/509) | 1 | Ref. |  |
 Not enough | 153 | 14.2 (153/1079) | 81.7 (125/153) | 1.26 | 0.80–2.00 | .326 |
 No information | 417 | 38.6 (417/1079) | 78.2 (326/417) | 1.01 | 0.74–1.38 | .947 |
Information about upcoming/routine ultrasound scan in week 19–20 | ||||||
 Enough or too much | 815 | 75.5 (815/1080) | 75.7 (617/815) | 1 | Ref. |  |
 Not enough | 152 | 14.1 (152/1080) | 85.5 (130/152) | 1.90 | 1.17–3.06 | .009 |
 No information | 113 | 10.5 (113/1080) | 91.2 (103/113) | 3.31 | 1.69–6.45 | <.001 |