# create the hemoglobin with PCBs only
hemoglobin.data <- read.csv("hemoglobin_data.csv",
header = T,
stringsAsFactors = T)
# remove all the PCB_LC
hemoglobin.PCB <- hemoglobin.data[,!grepl("^PCB.+LC$", colnames(hemoglobin.data))]
# export to the package
devtools::use_data(hemoglobin.PCB)
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