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Erratum to: Do personalised e-mail invitations increase the response rates of breast cancer survivors invited to participate in a web-based behaviour change intervention? A quasi-randomised 2-arm controlled trial

The original article was published in BMC Medical Research Methodology 2015 15:66

Erratum

Since the publication of this article [1], we have been made aware of two errors in the manuscript.

First, it was reported that 344 participants were allocated to one of two groups. This was a typo consistent throughout the article, and should have been 334 (168 intervention, 166 control – which was reported correctly).

Secondly, the RR calculation was based on the transposed table, which produced the correct p value and OR, but incorrect RR (1.38 instead of 1.51). As such, it was reported that: “those sent the personalised email were 1.5 times (95 % CI = 1.18–1.93) more likely to respond than those sent the generic email.” This should have read: “those sent the personalised email were 1.4 times (95 % CI = 1.15–1.66) more likely to respond than those sent the generic email.”

References

  1. 1.

    Short CE, Rebar AL, Vandelanotte C. Do personalised e-mail invitations increase the response rates of breast cancer survivors invited to participate in a web-based behaviour change intervention? A quasi-randomised 2-arm controlled trial. BMC Med Res Methodol. 2015;15:66. doi:10.1186/s12874-015-0063-5.

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Author information

Correspondence to Camille E. Short.

Additional information

The online version of the original article can be found under doi:10.1186/s12874-015-0063-5.

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