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Table 5 Chiropractic and PCP visits prior the index date (Medicare)

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

Exposures Cases (n = 670) Controls (n = 2680)
Most recent DC Visit
0-1 day: n (%) * 4 (0.1)
0-3 days: n (%) * 8 (0.3)
0-7 days: n (%) * 9 (0.3)
0-14 days: n (%) 1 (0.1) 15 (0.6)
0-30 days: n (%) 2 (0.3) 24 (0.9)
Most recent PCP Visit
1-1 day: n (%) 16(2.4) 18 (0.7)
1-3 days: n (%) 30 (4.5) 36 (1.3)
1-7 days: n (%) 55 (8.2) 97 (3.6)
1-14 days: n (%) 90 (13.4) 183 (6.8)
1-30 days: n (%) 143 (21.3) 346 (12.9)
  1. *Insufficient data to compute an estimate.