Meta-analysis

The meta-analysis excluded 831 studies from being considered.

The findings are based on a meta-analysis of 10 earlier studies involving 18,000 people in the United States, Canada, Australia and Europe, which looked at the health effects of eating meats that contain nitrates as preservatives.

She began asking the question, “Were you friends with your partner before you became romantically involved?” in her other research and conducted a meta-analysis for this paper.