Abstracts normally have four parts: Intro, Methods, Results, Discussion. The intro gives a background statement to why the research is significant and also provides the hypothesis tested (if it's a good article). The methods section provides what is being measured (exposures and outcomes), what is the sample, and how was the data is analyzed. The results is... the results. If I were you, and already have trouble understanding research articles, I would skip this section and go straight to the discussion. The discussion puts the results in 'normal terms'. Go here to find the most significant information.
Here's a source that is pretty easy to read [
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