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. Author manuscript; available in PMC: 2014 Dec 17.
Published in final edited form as: Arthritis Care Res (Hoboken). 2014 Jun;66(6):907–915. doi: 10.1002/acr.22240

Table 3.

Patient Characteristics Associated with Early Revision THA (7,945 revisions among 207,256 patients).

Septic Revision (n=889) Aseptic Revision (n=7,056)

Hazard Ratio 95% CI p-value Hazard Ratio 95% CI p-value
Age
50–75 v. <50 0.78 (0.64,0.95) 0.015 0.84 (0.78,0.90) <0.001
>75 v. <50 0.51 (0.39,0.66) <0.001 0.63 (0.58,0.69) <0.001
Female 0.71 (0.62,0.82) <0.001 0.98 (0.93,1.03) 0.414
Race
Black v. White 1.08 (0.83,1.40) 0.570 1.08 (0.98,1.20) 0.140
Other v. White 0.85 (0.63,1.15) 0.300 0.79 (0.70,0.89) <0.001
Unknown v. White 0.59 (0.39,0.89) 0.012 0.82 (0.71,0.93) 0.003
Insurance
Medicare v. Private 1.24 (1.05,1.47) 0.011 1.07 (1.01,1.13) 0.022
Medicaid v. Private 1.91 (1.45,2.51) <0.001 1.12 (0.10,1.27) 0.068
Self-Pay v. Private 2.19 (1.15,4.12) 0.015 0.88 (0.62,1.25) 0.494
Other v. Private 1.54 (1.10,2.16) 0.012 1.14 (1.00,1.31) 0.049
Surgical indication
IA v. OA 1.59 (1.20,2.08) 0.001 1.23 (1.11,1.37) 0.001
AVN v. OA 1.26 (1.01,1.57) 0.045 1.21 (1.11,1.31) <0.001
Congenital v. OA 0.64 (0.35,1.17) 0.150 1.17 (1.01,1.36) 0.041
Acute Fracture v. OA 1.85 (1.48,2.31) <0.001 1.15 (1.05,1.27) 0.003
Neoplasm v. OA 1.79 (1.01,3.17) 0.046 1.13 (0.88,1.45) 0.359
Other v. OA 2.93 (1.72,5.00) <0.001 1.88 (1.49,2.38) <0.001
Elixhauser Comorbidities
Congestive heart failure 0.98 (0.67,1.44) 0.919 0.89 (0.76,1.04) 0.140
Valvular disease 0.84 (0.57,1.22) 0.355 0.93 (0.81,1.06) 0.270
Peripheral vascular disease 0.97 (0.58,1.62) 0.893 0.84 (0.68,1.03) 0.097
Other neurological disorders 0.96 (0.63,1.46) 0.836 1.01 (0.86,1.19) 0.870
Chronic pulmonary disease 1.30 (1.07,1.56) 0.007 1.08 (1.00,1.16) 0.052
Diabetes 1.44 (1.18,1.76) 0.001 0.92 (0.84,1.01) 0.066
Hypothyroidism 1.33 (1.06,1.66) 0.013 1.09 (1.01,1.19) 0.032
Coagulopathy 1.56 (0.96,2.53) 0.072 0.94 (0.74,1.19) 0.606
Obesity 1.68 (1.34,2.10) <0.001 0.91 (0.82,1.01) 0.073
Fluid and electrolyte disorders 1.34 (1.04,1.72) 0.025 0.97 (0.87,1.08) 0.536
Depression 1.50 (1.14,1.98) 0.004 1.41 (1.27,1.57) <0.001
Hypertension 1.09 (0.94,1.25) 0.255 1.01 (0.96,1.06) 0.786