RSS doesn't need analytics. If you want analytics, put them on the links in the feed. If you want to know that people are reading the link at all, either put in an invisible pixel, or just include a paragraph with a [more...] link.
RSS feeds that provide a paragraph (or less) and a "more..." link make me unsubscribe immediately. I'm most often reading my feeds when offline or on the go, and not having the full article makes it worthless.