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Table 1 Characteristics of VA VASQIP patients receiving TKA or THA by OA or RA diagnosis

From: Rheumatoid arthritis patients are not at increased risk for 30-day cardiovascular events, infections, or mortality after total joint arthroplasty

  OA (n = 33,685) RA (n = 839) P-value
  Missing Mean SD Missing Mean SD  
Demographics and comorbidity        
Age (years) 0 64.49 10.72 0 62.19 10.55 <0.001
Male sex (%) 0 95.73   0 93.09   <0.001
Caucasian (%) 2,236 72.73   49 76.08   0.037
Alcohol consumption (%) 348 7.66   6 4.08   <0.001
Current smoker (%) 204 24.23   3 22.85   0.356
Diabetes mellitus (%) 204 16.88   3 12.20   <0.001
COPD (%) 1 9.67   1 10.74   0.301
Operation time (hours) 1 2.26 0.76 0 2.29 0.77 0.248
Low-dose aspirin (%) 0 38.09   0 27.89   <0.001
Poor functional health (%) 0 5.28   0 9.06   <0.001
Short of breath, dyspnea ≥2 (%) 274 11.17   8 9.63   0.162
General anesthesia (%) 0 69.39   0 70.92   0.343
Bleeding disorders (%) 206 1.34   4 1.44   0.812
Chemotherapy <30 days pre-op (%) 206 0.22   5 3.60   <0.001
CHF <30 days pre-op (%) 3 0.77   1 0.84   0.820
TIA history (%) 211 2.18   4 2.04   0.773
CVA/Stroke with neurologic deficit (%) 209 2.02   4 1.44   0.234
CVA/Stroke without neurologic deficit (%) 209 2.29   4 2.75   0.375
GCS use before surgery        
≤30 days 0 5.70   0 49.94   <0.001
≤0.5 year 0 11.68   0 62.22   <0.001
≤1 year 0 16.03   0 67.70   <0.001
At surgery interview (VASQIP) 0 1.16   0 41.12   <0.001
VASQIP or ≤1 year 0 16.42   0 69.25   <0.001
VASQIP and ≤1 year 0 0.77   0 39.45   <0.001
Abnormal pre-op laboratory        
Hematocrit ≤38% (%) 693 15.43   13 30.51   <0.001
White blood cells >11,000/μl (%) 890 3.85   16 10.45   <0.001
Platelets ≤150,000/μl (%) 1,175 5.71   20 3.30   0.003
Creatinine >1.2 mg/dl (%) 1,533 31.33   34 23.85   <0.001
Serum sodium ≤135 mM (%) 1,905 7.24   43 8.54   0.163
Serum sodium >145 mM (%) 1,905 1.63   43 1.01   0.165
Blood urea nitrogen >40 mg/dl (%) 2,990 0.93   80 0.79   0.689