This preprint observes a citation advantage of papers reusing more than one dataset, based on publications reusing ICPSR datasets:
http://arxiv.org/abs/2402.05024

"Papers that used more than one dataset garnered 22%, 15%, and 15% more citations over 3, 5, and 10 years relative to papers that used a single dataset." The effect is higher for datasets that are rarely used in combination.

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