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Table 1 Demographics and comorbidities for patients undergoing primary total hip arthroplasty

From: Does dehydration prior to primary total joint arthroplasty increase risk of perioperative complications?

Demographics and Comorbidities Hydration Status Pa
Non-Dehydrated Dehydrated
n = 101,292 n = 87,337
Age (years) mean ± SD 63.9 ± 11.0 67.7 ± 10.2  < 0.001
Gender     < 0.001
 Female 45,210 44.6% 58,657 67.2%  
BMI (kg/m2)     < 0.001
  < 18 333 0.3% 492 0.6%  
 18–25 16,522 16.3% 17,773 20.4%  
 25–30 34,058 33.6% 28,490 32.6%  
 30–35 28,208 27.9% 21,806 25.0%  
 35–40 14,546 14.4% 12,053 13.8%  
  > 40 7625 7.5% 6723 7.7%  
Functional status prior to surgery     < 0.001
 Independent 99,871 98.6% 85.864 98.3%  
 Dependent 1421 1.4% 1473 1.7%  
ASA     < 0.001
 1 3775 3.7% 2822 3.2%  
 2 53,429 52.8% 46,766 53.6%  
 3 42,353 41.8% 36,260 41.5%  
  ≥ 4 1735 1.7% 1489 1.7%  
Diabetes mellitus     < 0.001
 No diabetes mellitus 89,009 87.8% 76,018 87.0%  
 Non-insulin-dependent diabetes mellitus 9488 9.4% 8758 10.0%  
 Insulin-dependent diabetes mellitus 2795 2.8% 2561 3.0%  
Smoker     < 0.001
 No 86,850 85.7% 79,577 91.1%  
 Yes 14,442 14.3% 7760 8.9%  
Congestive heart failure    0.007
 No 100,996 99.7% 87,020 99.6%  
 Yes 296 0.3% 317 0.4%  
  1. Bold fonts indicate statistical significance
  2. aStatistical significance set at P < 0.05