Created
November 18, 2025 10:08
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| library( tidyverse ) | |
| library( haven ) | |
| left_join( | |
| read_xpt("~/Downloads/DEMO_J.xpt"), | |
| read_xpt("~/Downloads/BMX_J.xpt"), | |
| by="SEQN", relationship="one-to-one" ) %>% | |
| select( subjectId=SEQN, gender_code=RIAGENDR, | |
| age=RIDAGEYR, ethnicity_code=RIDRETH3, height=BMXHT ) -> nhanes0 | |
| tibble( | |
| code = c( 1, 2 ), | |
| gender = c( "male", "female" ) | |
| ) -> gender_codes | |
| tibble( | |
| code = c( 1, 2, 3, 4, 6, 7 ), | |
| ethnicity = c( "Mexican", "Hispanic", "NH_White", | |
| "NH_Black", "NH_Asian", "Other/Multi") | |
| ) -> ethnicity_codes | |
| nhanes0 %>% | |
| left_join( ethnicity_codes, by=c("ethnicity_code"="code"), | |
| relationship="many-to-one") %>% | |
| left_join( gender_codes, by=c("gender_code"="code"), | |
| relationship="many-to-one") %>% | |
| select( -gender_code, -ethnicity_code ) -> nhanes | |
| nhanes |
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