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Table 5 Trends in venous thromboembolism prophylaxis

From: Use of venous thromboprophylaxis and adherence to guideline recommendations: a cross-sectional study

  Preintervention period Postintervention period
  1990 1992a 1997a 1999
Number of patients 615 187 194 397
Mean age (SD) 60 (15.5) 60 (17) 61 (17) 60 (17)
Mean number risk factors (SD) 2.3 (1) 2.6 (1) 2.5 (1) 2.6 (1)
Contrain-dications to heparins n (%) 70 (11) 33 (18) 56 (29) 42 (11)
Prophylaxis in all patients n (%) 82 (13) 73 (39) 103 (53) 231 (58)
Prophylaxis in patients with ≥2 risk factors n/N (%) 79/444 (22) 63/116 (54) 85/110 (77) 201/302 (67)
Prophylaxis in surgical patients n/N (%) 39/183 (21) 49/89 (55) 65/73 (89) 109/155 (70)
  1. a Patients of Internal Medicine and General Surgery Wards.