Merck / Merck/forestly

A lot of if-else in `format_ae_listing()`

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@fukuhiro2023 is already working on this.

Since Sep 16, 2026.

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Description

We have a lot of `if` statements in the `format_ae_listing()` function handling various tasks (see https://github.com/Merck/forestly/blob/main/R/ae_listing.R#L336-L508), including simple ones like converting to title case or relabeling columns. It also includes some calculations, as seen in lines [465-506](https://github.com/Merck/forestly/blob/main/R/ae_listing.R#L465-L506).

I am wondering if these if-else statements are redundant, considering:
- Variable names might differ from one study to another.
- They may slow down execution time.
- Should we just display exactly what is already in the dataset?

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