Global cargo gravitation model: airports matter for forecasts.

Int Econ Econ Policy · 2022 · PMC8627155 · PMID 40477511

Europe PMC DOI

hedged sentence

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closest p

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boldest claim

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highly significantno p-value reported

We can observe that this might be a sample selection problem, as we in fact find a negative and highly significant sign if only considering large airports (top 15 %).

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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.