I'm confused about how to correctly punctuate these two. Can someone elaborate?
Here's an example:
She said that the pain was 100/10 – i.e. above the top of the scale.
She said that the pain was 100/10 – i.e., above the top of the scale.
She said that the pain was 100/10 – i.e. above the top of the scale.
She said that the pain was 100/10 – i.e., above the top of the scale.
I think that the first example is correct, but is it?!