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Table 3 Bivariate meta-analyses of false positive and negative rates

From: High-throughput, non-invasive prenatal testing for fetal rhesus D status in RhD-negative women: a systematic review and meta-analysis

Analysis case Number of studies False negative rate (at risk of sensitisation) False positive rate (unnecessary anti-D)
Estimate (%) 95% CI Estimate (%) 95% CI
Inconclusive tests treated as test positive 8 0.34 0.15–0.76 3.86 2.54–5.82
Excluding all women with inconclusive test results 8 0.35 0.15–0.82 1.26 0.87–1.83
Studies conducted in Bristol only 3 0.21 0.09–0.48 5.73 4.58–7.16
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