Table 1.

Structure of the study population

Characteristics	N (%)
Number of participants	38 (100)
Independent implementation of first-trimester screening	38 (100)
Certified by FMF UK	16 (42.1)
Certified by FMF Germany	22 (57.9)
Not specified	2 (5.3)
Certified by FMF UK and FMF Germany	3 (7.8)
Risk calculation process
Independent risk calculation	22 (57.9)
Risk calculation by laboratory	10 (26.3)
Not specified	6 (15.8)
Sex
Female examiners	24 (63.2)
Age group
25–40 years of age	1 (2.6)
41–50 years of age	9 (23.7)
51–60 years of age	22 (57.9)
61–70 years of age	6 (15.8)
Professional experience
0–10 years	0 (0)
11–20 years	11 (28.9)
21–30 years	17 (44.7)
> 30 years	10
Certified by DEGUM level
Not certified by DEGUM	10 (26.3)
Level 1	9 (23.7)
Level 2	19 (50)
Level 2 Kursleiter	0 (0)
Level 3	0 (0)
Number of first-trimester screenings performed per month
0–10	12 (31.6)
11–20	15 (39.5)
21–30	4 (10.5)
31–40	5 (13.2)
> 40	2 (5.3)
Digital documentation of the first-trimester screening
Viewpoint	17 (44.7)
Astralia	6 (15.8)
FMF UK software	3 (7.9)
FMF Germany software	11 (28.9)
No digital documentation	6 (15.8)
Existing standard operating procedure for first-trimester screening	24 (63.2)