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Table 1 Baseline characteristics of RA and OA patients

From: Reduced induction of anti-PF4/heparin antibody in RA patients after total knee arthroplasty

  Total subjects RA patients OA patients  
  (n = 124) (n = 26) (n = 98) p value
Gender (male/female) 20/104 2/24 18/80 0.188
Age (years)
 Mean ± SD 73.4 ± 6.9 69.8 ± 8.5 74.3 ± 6.1 0.021
 Range 54–85 54–80 54–85  
BMI (kg/m2)
 Mean ± SD 26.7 ± 4.2 25.7 ± 4.7 26.9 ± 4.0 0.150
History of venous thrombosis, n (%) 7 (5.7 %) 3 (11.5 %) 4 (4.1 %) 0.143
Comorbidities
 Hypertension 86 (69.4 %) 20 (76.9 %) 66 (67.4 %) 0.346
 Ischemic heart disease 6 (4.8 %) 0 6 (6.1 %) 0.196
 Diabetes 29 (23.4 %) 7 (26.9 %) 22 (22.4 %) 0.632
 Cerebrovascular disease 10 (8.1 %) 2 (7.7 %) 8 (8.2 %) 0.938
Operation time (min)
 Mean ± SD 93.7 ± 23.0 93.8 ± 21.1 93.6 ± 23.5 0.711
General anesthesia, n (%) 124 (100 %) 26 (100 %) 98 (100 %)  
Use of elastic stocking, n (%) 124 (100 %) 26 (100 %) 98 (100 %)  
Use of tourniquet, n (%) 124 (100 %) 26 (100 %) 98 (100 %)  
Use of cement, n (%) 124 (100 %) 26 (100 %) 98 (100 %)  
Prophylaxis
 Edoxaban (mg/day) 21.2 ± 7.4 21.3 ± 7.6 21.1 ± 7.4 0.891
 (duration) (11.4 ± 1.8 days) (12.0 ± 0.6 days) (11.3 ± 2.0 days) 0.155
  1. BMI body mass index, OA osteoarthritis, RA rheumatoid arthritis