Problem – Age in months

Hello, Can anyone help me to show the age from the third column as the age in months?

Thanks

# Purpose : ECD analysis
# Author: Jelena Brcanski
# Date: 10.4.2024.

# Loading packages------------------------------------


pacman::p_load(
  rio, # for importing data
  here, # for relative file paths
  skimr, # for reviewing the data
  janitor, # for cleaning data
  gtsummary, # creating tables  
  scales, # percentage in tables  
  flextable, # for making pretty tables
  epikit,  # for creating age categories
  ggExtra, # additional plotting functions
  gghighlight, # highlight portions of the plots
  tidyverse, # for data management and visualization
  reprex,
  datapasta
)

# Import data-----------------------------------------

ECD_clean <- data.frame(
  stringsAsFactors = FALSE,
  date_of_birth = c("02.11.2023.",
                    "16.03.2017.","05.09.2022.","18.11.2023.",
                    "27.09.2023."),
  date_of_examination = c("10.04.2024.",
                          "10.04.2024.","10.04.2024.","10.04.2024.",
                          "10.04.2024.")
)  %>%               

#clean data

mutate(date_of_birth = dmy( date_of_birth)) %>%
mutate(date_of_examination = dmy(date_of_examination))%>%

# new variable, age in months

mutate(age=as.period(interval(start = date_of_birth, end = date_of_examination))) 

Created on 2024-05-09 with reprex v2.1.0

1 Like

Hello,

Here is how I would approach this:

# loading packages
library(tidyverse)

# generating fake data

ECD_raw <- data.frame(
    stringsAsFactors = FALSE,
    date_of_birth = c(
        "02.11.2023.",
        "16.03.2017.",
        "05.09.2022.",
        "18.11.2023.",
        "27.09.2023."
    ),
    date_of_examination = c(
        "10.04.2024.",
        "10.04.2024.",
        "10.04.2024.",
        "10.04.2024.",
        "10.04.2024."
    )
)
    
# cleaning data
ECD_clean <- ECD_raw |>
    mutate(
        date_of_birth = dmy(date_of_birth),
        date_of_examination = dmy(date_of_examination),
        age_months = time_length(
            interval(start = date_of_birth, end = date_of_examination),
            "months"
        )
    )

Created on 2024-05-09 with reprex v2.1.0

Session info
sessioninfo::session_info()
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#>  language (EN)
#>  collate  en_US.UTF-8
#>  ctype    en_US.UTF-8
#>  tz       America/Toronto
#>  date     2024-05-09
#>  pandoc   3.1.11 @ /Applications/RStudio.app/Contents/Resources/app/quarto/bin/tools/x86_64/ (via rmarkdown)
#> 
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#> ──────────────────────────────────────────────────────────────────────────────

All the best,

Tim

1 Like

Thank you!

2 Likes