Individual and occupational risk factors for knee osteoarthritis: results of a case-control study in Germany.

Arthritis Res Ther · 2010 · PMC2911872 · PMID 20470400

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a significant trendno p-value reported

In the study by D'Souza and colleagues mentioned above, a significant trend in heavy lifting and severe symptomatic knee OA was detected in both genders [ 19 ].

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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.