COVID-19 must catalyse key global natural experiments.

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

Who cites it

5 citing papers in PubMed.

1. Preterm birth and stillbirth rates associated with socioeconomic disparities during COVID-19 pandemic: a population-based cross-sectional study.BMJ paediatrics open · 2023
   Article
2. Natural experiments: A Nobel Prize awarded research design for strengthening causal inference on global health challenges.Journal of global health · 2022
   Article
3. Changes in fetal growth restriction and retinopathy of prematurity during the coronavirus disease 2019 pandemic: A cross-sectional study.PloS one · 2022
   Article
4. Adverse pregnancy outcomes during the COVID-19 lockdown. A descriptive study.BMC pregnancy and childbirth · 2021
   Article
5. Impact of COVID-19 mitigation measures on the incidence of preterm birth: a national quasi-experimental study.The Lancet. Public health · 2020
   Article

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

Authors and funding

2 authors.

Funding

No grant is acknowledged in the PubMed record.

Abstract

PubMed holds no abstract for this paper.

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