Table 2.
Absolute and relative proportion of women who gave birth in hospitals and screening for gestational diabetes by test method, test result and reporting year (n=1,948,847)
Source: External inpatient quality assurance for obstetrics at IQTIG, own calculations
| Screening GDM | 2016 | 2017 | 20181 | |||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| Pre-test only2 | 403,086 | 476,489 | 479,277 | |||
| Positive | 11,556 | 2.9 | 14,004 | 2.9 | 13,629 | 2.8 |
| Negative | 391,530 | 97.1 | 462,485 | 97.1 | 465,648 | 97.2 |
| Diagnostic test only3 | 53,369 | 46,449 | 49,280 | |||
| Positive | 7,443 | 13.9 | 7,926 | 17.1 | 8,694 | 17.6 |
| Negative | 45,926 | 86.1 | 38,523 | 82.9 | 40,586 | 82.4 |
| Pre-test plus diagnostic test3 | 170,812 | 135,570 | 134,515 | |||
| Positive | 43,955 | 25.7 | 46,488 | 34.3 | 50,535 | 37.6 |
| Negative | 126,857 | 74.3 | 89,082 | 65.7 | 83,980 | 62.4 |
GDM = Gestational diabetes
1 In the reporting year 2018, 15,372 women with hospital births (2.0%) were excluded due to missing values (missings)
2 Test result refers to pre-test with 50g glucose (glucose challenge test)
3 Test result refers to diagnostic test with 75g glucose (oral glucose tolerance test, oGTT)