Erratum to: Ozone and childhood respiratory disease in three US cities: evaluation of effect measure modification by neighborhood socioeconomic status using a Bayesian hierarchical approach

Abstract

ErratumThis article [1] has been updated to include an R code and example dataset as Additional files 2 and 3. The R code and example dataset are also shown below.In addition, the following text has been removed from page 4 of the article:"To demonstrate the methods we used to fit the combined meta-regression, the online supplement includes example R code with an example dataset (example data are not real but are similar in magnitude and structure to the output from the case-crossover analyses in Stage 1".) Finally, the following text is shown in the methods section:To demonstrate the methods we used to fit the combined meta-regression, we have included an R code and example dataset as Additional files 2 and 3 (example data are not real but are similar in magnitude and structure to the output from the case-crossover analyses in Stage 1″.) Additional filesAdditional file 2: Offers example R code that requires the use of the simulated data in Additional file 3 (log odds ratios, standard errors, and area-level indicators of poverty) to demonstrate how to fit combined Bayesian hierarchical meta-regressions similar to the ones specified in Stage 2 models in O' Lenick et al., 2017 [1].The R code also demonstrates how to make graphs similar to the ones presented in Figure Competing interestsThe authors declare that they have no competing interests. Author details