First published online: 23 July 2021, Int J Epidemiol 2021; doi: 10.1093/ije/dyab110

In the originally published version of this manuscript, there was an error in the final sentence of the results section.

The passage should read: “…and was lower in smokers compared with non-smokers [OR = 0.71 (95% CI: 0.57, 0.89)]” instead of “…and was lower in smokers compared with non-smokers [OR = 0.71 (95% CI: 0.57, 0.49)].”

This error has been corrected online and in print.

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