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. 2021 Jun 16;6(2):3–18. doi: 10.25646/8325

Annex Table 3.

Proportion of positive screening tests by testing method used, reporting year and age of women at birth (n=1,948,847)

Source: External inpatient quality assurance for obstetrics at IQTIG, own calculations

Pre-test only1 Diagnostic test only2 Pre- and diagnostic test2
2016 2017 2018* 2016 2017 2018* 2016 2017 2018*
Age group in percent
  <20 years
  20–24 years
  25–29 years
  30–34 years
  35–39 years
  40–44 years
  ≥45 years		 2.1
2.5
2.6
2.8
3.4
4.2
4.4		 2.0
2.7
2.6
2.9
3.5
4.4
6.1		 2.2
2.3
2.6
2.8
3.3
4.7
6.7		 7.9
10.4
11.7
13.6
17.2
21.7
26.0		 11.4
13.5
14.9
16.5
19.8
24.1
25.8		 9.9
13.8
15.8
16.6
20.5
25.6
26.5		 14.7
19.3
22.6
25.4
31.0
36.9
44.4		 21.7
26.9
30.3
33.7
40.0
46.7
51.7		 23.4
30.0
33.6
36.9
43.1
50.0
56.6
Total 2.9 2.9 2.8 13.9 17.1 17.6 25.7 34.3 37.6

1 Test result refers to pre-test with 50g glucose (glucose challenge test, GCT)

2 Test result refers to diagnostic test with 75g glucose (oral glucose tolerance test, oGTT)

* In the reporting year 2018, 15,372 women with hospital births (2.0%) were excluded due to missing values (missings)