Hello...
The abstract guidance for a conf I'm submitting to states "Prepare a 600-word abstract for each presentation that describes the material to be presented (introduction, hypotheses, study population, methods, results)."
Does this mean that I do not need to bother with a discussion / conclusions? Seems so odd!

Is that not what they mean by results?

Probably! I put a sentence at the end of the results. Normally my results sections don't contain any interpretation, just stats.