junco (version 0.1.2)

find_missing_chg_after_avisit: Helper for Finding AVISIT after which CHG are all Missing

Description

Helper for Finding AVISIT after which CHG are all Missing.

Usage

find_missing_chg_after_avisit(df)

Value

A string with either the factor level after which AVISIT is all missing, or NA.

Arguments

df

(data.frame)
with CHG and AVISIT variables.

Examples

df <- data.frame(
  AVISIT = factor(c(1, 2, 3, 4, 5)),
  CHG = c(5, NA, NA, NA, 3)
)
find_missing_chg_after_avisit(df)

df2 <- data.frame(
  AVISIT = factor(c(1, 2, 3, 4, 5)),
  CHG = c(5, NA, 3, NA, NA)
)
find_missing_chg_after_avisit(df2)

df3 <- data.frame(
  AVISIT = factor(c(1, 2, 3, 4, 5)),
  CHG = c(NA, NA, NA, NA, NA)
)
find_missing_chg_after_avisit(df3)