Correction: Impact of sampling and data collection methods on maternity survey response: a randomised controlled trial of paper and push‑to‑web surveys and a concurrent social media survey.

The original article can be found online at https://doi.org/10.1186/s12874-023-01833-8.Correction: BMC Med Res Methodol 23, 10 (2023)https://doi.org/10.1186/s12874-023-01833-8Following publication of the original article [[1]], the authors reported an error in the Fig. 4: the colours in the pie charts in Fig. 4 do not all correspond with the legend. See the Fig. 4 corrected.Graph: Fig. 4 Breakdown of total costs across the surveysThe original article [[1]] has been updated.By Siân Harrison; Fiona Alderdice and Maria A. QuigleyReported by Author; Author; Author [Extracted from the article]