Targeted school-based interventions for improving reading and mathematics for students with, or at risk of, academic difficulties in Grades 7-12: A systematic review.

Campbell Syst Rev · 2020 · PMC8356291 · PMID 37131416

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an increasing trendno p-value reported

There is an increasing trend, only six included studies were published before the year 2000 and about half the studies have been published since 2010.

also in 63,971 other papers

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.