Recoding gender variable

tidyverse
3

Plus, forcats::fct_recode() is also useful in recoding categorical variables, except that it keeps unmentioned levels as is. So the second solution is

gndr_all %>% 
  forcats::fct_explicit_na(na_level = "missing") %>% 
  forcats::fct_recode(female="1",
                      male="2",
                      other = "missing",
                      other = "4",
                      other = "5"
)