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Karla Hemming, Senior Editor

Karla is a Professor of Biostatistics at the Institute of Applied Health Research, University of Birmingham, UK. Karla’s research interests include how to design cluster and stepped-wedge trials so as to maximise their statistical efficiency and minimise their risk of bias; how to model time and treatment effect heterogeneity in longitudinal cluster trials; and the ethical issues surrounding these pragmatic trial designs, such as ethical oversight and consent. Karla has recently led the CONSORT extension for the stepped-wedge cluster randomised trial.

Annual Journal Metrics

  • 2022 Citation Impact
    2.5 - 2-year Impact Factor
    2.5 - 5-year Impact Factor
    0.827 - SNIP (Source Normalized Impact per Paper)
    0.814 - SJR (SCImago Journal Rank)

    2022 Speed
    50 days submission to first editorial decision for all manuscripts (Median)
    188 days submission to accept (Median)

    2022 Usage 
    6,130,958 downloads
    28,089 Altmetric mentions