Does the use of Doppler ultrasound reduce fetal mortality? A population study of all deliveries in Norway 1990-2014.

Int J Epidemiol · 2022 · PMC8743111 · PMID 34999866

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a clear trendno p-value reported

For pre-term deliveries, the graphs in Figures 1 and 2 show a clear trend of a negative relationship between the timing of the introduction of Doppler ultrasound and the decline in fetal deaths.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.