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Table 3 Number of studies for potential factors

From: Risk factors for venous thromboembolism of total hip arthroplasty and total knee arthroplasty: a systematic review of evidences in ten years

Endpoint VTE*
Total of the endpoint 54
Risk factors N (%)
Demographic factors
Age 12 (22%)
Gender 13 (24%)
BMI 6 (11%)
Race 1 (2%)
ASA physical status 3 (6%)
Clinical factors
Underlying diagnosis 3 (6%)
Comorbidity (Charlson index) 3 (6%)
Cardiovascular disease 10 (19%)
Respiratory disease 2 (4%)
Neurological disease 1 (2%)
Liver and kidney disease 2 (4%)
Metabolic disease 7 (13%)
Hematological disease 2 (4%)
Endocrine disease 2 (4%)
Malignancy 4 (8%)
Medication (hormone replacement/herbal) 3 (6%)
Laboratory indexes
Preoperative laboratory index 2 (4%)
Postoperative laboratory index 2 (4%)
Health care provider- related factors
Surgery type 12 (22%)
Surgical technic 5 (9%)
Operating time 4 (8%)
Anesthesia 5 (9%)
Bleeding 1 (2%)
Hospital volume 2 (4%)
Insurance type 1 (2%)
Thromboprophylaxes
Chemoprophylaxis 28 (52%)
Initiating and lasting of the prophylaxis 4 (8%)
Mechanical and physical prophylaxis 5 (9%)
  1. *VTE = venous thromboenbolism,which includes DVT(deep vein thrombosis) and PE (pulmonary embolism).
  2. Column percentages,not mutually exclusive.