R Codes

Mortality displacement as a type of selection bias in study designs for health effects of environmental exposures and effect modifications: consequences and causal perspectives

Honghyok Kim, Jong-Tae Lee, Roger D. Peng, Kelvin C. Fong & Michelle L. Bell (under review)


Air pollution and COVID-19 mortality in New York City

Honghyok Kim & Michelle L. Bell @ American Journal of Respiratory and Critical Care Medicine (In press, open soon)


Temporal transition of racial/ethnic disparities in COVID-19 outcomes in 3108 counties of the United States: Three phases from January to December 2020

Honghyok Kim, Antonella Zanobetti & Michelle L. Bell @ Science of the Total Environment (2021)


Alternative adjustment for seasonality and long-term time-trend in time-series analysis for long-term environmental exposures and disease counts

Honghyok Kim, Jong-Tae Lee, Kelvin C. Fong & Michelle L. Bell. @ BMC Medical Research Methodology (2021)