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Table 2 Age and gender of cases and controls (Medicare)

From: Chiropractic care and the risk of vertebrobasilar stroke: results of a case–control study in U.S. commercial and Medicare Advantage populations

Variable Cases (n = 670) Controls (n = 2680)
Age: mean (median) 76.1 (76.2) 76.1 (76.2)
Males: n (%) 393 (58.6) 1572 (58.6)