Barriers to completing oral glucose tolerance testing in women at risk of gestational diabetes

Aim Complications of gestational diabetes (GDM) can be mitigated if the diagnosis is recognized. However, some at‐risk women do not complete antenatal diagnostic oral glucose tolerance testing (OGTT). We aimed to understand reasons contributing to non‐completion, particularly to identify modifiable factors. Methods Some 1906 women attending a tertiary UK obstetrics centre (2018–2019) were invited for OGTT based on risk‐factor assessment. Demographic information, test results and reasons for non‐completion were collected from the medical record. Logistic regression was used to analyse factors associated with non‐completion. Results Some 242 women (12.3%) did not complete at least one OGTT, of whom 32.2% (n = 78) never completed testing. In adjusted analysis, any non‐completion was associated with younger maternal age [≤ 30 years; odds ratio (OR) 2.3, 95% confidence interval (CI) 1.6–3.4; P