Figure 1.

Proportion of extremely premature and very premature births (permille of all births in the time period) during the lockdown period (12 March–14 April 2020) compared with aggregated birth data for the previous 5 years during the same date range (12 March–14 April 2015–2019). Inset graph: a comparison of extremely premature and very premature births born between 20 January and 22 February 2020 and an aggregate from that date range for the previous 5 years (20 January–22 February 2015–2019). Extremely premature (before 28⁺⁰ weeks’ gestation) and very premature (28⁺⁰–31⁺⁶ weeks’ gestation). Error bars represent 95% CIs.