OP 35 Incidence of pre-eclampsia in the UK in 2016–17

Research output: Contribution to journalMeeting abstractpeer-review


Introduction: Accurate contemporaneous data on the incidence of pre-eclampsia in high-income settings are sparse and often limited by coding inaccuracies. Recent work has reported the incidence of pre-eclampsia in the US (1980–2010) to be 3.4% (Ananth et al., BMJ 2013).

Objectives: To obtain data on the incidence of pre-eclampsia.

Materials and methods: An audit was undertaken in 16 NHS sites around England and Wales, participating in the PHOENIX study (www.isrctn.com/ISRCTN01879376). Data collection was designed to capture the incidence and duration of care for women diagnosed with pre-eclampsia across the gestational ranges. Data were expressed as a percentage of deliveries for that unit for the time period of data collection.

Results: The incidence of pre-eclampsia is shown in Fig. 1 below. The mean diagnosis to delivery interval was 11.6 (range 0.0–36.3) days in women presenting prior to 34 weeks gestation, 7.6 (1.3–32.7) days in women between 34 and 37 weeks gestation and 2.6 days (0.0–10.7) in those after 37 weeks gestation.

Conclusion: The overall incidence of preeclampsia was found to be 1.92% of deliveries, lower than previously described; the reasons behind the lower incidence are unclear. These data have important implications for planning future research studies.
Original languageEnglish
Pages (from-to)25
Number of pages1
JournalPregnancy Hypertension
Publication statusE-pub ahead of print - 12 Aug 2017


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