View source: R/respiratory-condition.R
COPD_Emph_der_fun1 | 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 (2005-2008) that use COPD and Emphysema as a combined variable.
COPD_Emph_der_fun1(DHHGAGE_cont, CCC_91E, CCC_91F)
DHHGAGE_cont |
continuous age variable. |
CCC_91E |
variable indicating if respondent has Emphysema |
CCC_91F |
variable indicating if respondent has COPD |
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_fun1() to create values across CCHS cycles # (2005-2008) COPD_Emph_der_fun1() 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) COPD2005 <- suppressWarnings(rec_with_table( cchs2005_p, c( "DHHGAGE_cont", "CCC_91E", "CCC_91F", "COPD_Emph_der" ) )) head(COPD2005) COPD2007_2008 <- suppressWarnings(rec_with_table( cchs2007_2008_p, c( "DHHGAGE_cont", "CCC_91E", "CCC_91F", "COPD_Emph_der" ) )) tail(COPD2007_2008) combined_COPD <- suppressWarnings(merge_rec_data(COPD2005, COPD2007_2008)) head(combined_COPD) tail(combined_COPD)
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