Correction: BMC Public Health 22, 2071 (2022)

https://doi.org/10.1186/s12889-022-14546-2

The original publication of this article [1] contained an error in an equation in the “Evaluation index” section. The incorrect and correct equation are shown below.

Incorrect

  • Cr=(C α + Cs)/3

Correct

  • Cr=(C α + Cs)/2

This does not affect the conclusions/results of the article. The original article has been updated.