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- Published on: 25 March 2015
- Published on: 29 December 2014
- Published on: 25 March 2015Re:Comment on: An epidemiological appraisal of the association between heart rate variability and particulate air pollution: a meta-analysisShow More
We thank Buteau and colleague (Buteau et al. 2014) for their interest in our meta-analysis on Heart Rate Variability (HRV) and air pollution (Pieters et al. 2012). Their concern about combining studies from different types of regression models ignores the strength of our meta -analysis to combine all the available evidence on HRV and air pollution published before February 2012. Combining the available evidence is criti...
Conflict of Interest:
None declared. - Published on: 29 December 2014Comment on: An epidemiological appraisal of the association between heart rate variability and particulate air pollution: a meta-analysisShow More
We believe that we have identified a methodological issue related to the procedure that Pieters et al. [1] used to combine studies using different types of regression models. In some studies heart rate variability parameters were modeled as a linear model but in others they were modeled as log-linear (i.e., where the outcome was log-transformed). To combine effect estimates from these two types of models, the authors co...
Conflict of Interest:
None declared.