Physicians' brain drain - a gravity model of migration flows.

Global Health · 2020 · PMC6961279 · PMID 31937356

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highly significantno p-value reported

The effect is highly significant, particularly for pairs that are both Schengen members.

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an increasing trendno p-value reported

This confirms previous empirical results, indicating that a higher employment rate is directly associated with an increasing trend in the volume highly-skilled migrants [ 24 , 37 ].

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.