I have a series of paired bar charts that show the most recent administration of a survey immediately adjacent to the next most recent administration for a given client. The two time points are two different colors. In the legend, I want a clear way to express the concept of the latest administration as distinct from the time before that, so it is clearly understood what is being compared.
Options that have occurred to me:
- Most recent vs. next most recent
- Most recent vs. penultimate
- Most recent vs. previous-to-most-recent
Each of these is awkward to read and say, and in the case of "penultimate" the word is possibly unknown to audience members. Are there any other suggestions out there that I've overlooked?