View source: R/respiratory-condition.R
COPD_Emph_der_fun2 | R Documentation |
This is one of 2 functions used to create a derived variable (COPD_Emph_der) that determines if a respondents has either COPD or Emphysema. 2 different functions have been created to account for the fact that different respiratory variables are used across CCHS cycles. This function is for CCHS cycles (2001-2003, 2009-2014) that use COPD and Emphysema as a combined variable.
COPD_Emph_der_fun2(DHHGAGE_cont, CCC_091)
DHHGAGE_cont |
continuous age variable. |
CCC_091 |
variable indicating if respondent has either COPD or Emphysema |
a categorical variable (COPD_Emph_der) with 3 levels:
respondent is over the age of 35 and has a respiratory condition
respondent is under the age of 35 and has a respiratory condition
respondent does not have a respiratory condition
COPD_Emph_der_fun2
# COPD_Emph_der_fun2() to create values across CCHS cycles # (2001-2003, 2009-2014) COPD_Emph_der_fun2() is specified in # variable_details.csv along with the CCHS variables and cycles included. # To transform COPD_Emph_der, use rec_with_table() for each CCHS cycle # and specify COPD_Emph_der, along with the various respiratory # variables. Then by using merge_rec_data() you can combine COPD_Emph_der # across cycles. library(cchsflow) COPD2001 <- suppressWarnings(rec_with_table( cchs2001_p, c( "DHHGAGE_cont", "CCC_091", "COPD_Emph_der" ) )) head(COPD2001) COPD2014 <- suppressWarnings(rec_with_table( cchs2007_2008_p, c( "DHHGAGE_cont", "CCC_091", "COPD_Emph_der" ) )) tail(COPD2014) combined_COPD <- suppressWarnings(merge_rec_data(COPD2001, COPD2014)) head(combined_COPD) tail(combined_COPD)
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