Miscarriage variable to factor — miscarriage_to

Transform a miscarriage variable to a factor variable By default, all other values are transformed to NA and considered as FALSE. Space and case are ignored.

Usage

miscarriage_to_factor(miscarriage)

Arguments

miscarriage

A character, factor or numeric vector corresponding to the miscarriage status of the individuals. This will be transformed to a factor with the following levels: TOP, SAB, ECT, FALSE The following values are recognized:

"SAB" : "spontaneous", "spontaenous abortion"
"TOP" : "termination", "terminated", "termination of pregnancy"
"ECT" : "ectopic", "ectopic pregnancy"
FALSE : 0, FALSE, "no", NA

Value

an factor vector containing the transformed variable "SAB", "TOP", "ECT", "FALSE"

Examples

miscarriage_to_factor(c(
   "spontaneous", "spontaenous abortion",
  "termination", "terminated", "termination of pregnancy",
  "ectopic", "ectopic pregnancy",
  "0", "false", "no", "NA"
))
#>  [1] SAB   SAB   TOP   TOP   TOP   ECT   ECT   FALSE FALSE FALSE FALSE
#> Levels: SAB TOP ECT FALSE