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Table 3 Hypothetical scenarios with variable baseline risks of recurrent VTE and estimates of LMWH effectiveness

From: Evaluating patient values and preferences for thromboprophylaxis decision making during pregnancy: a study protocol

  Risk of recurrence
  Low risk Medium risk High risk
Without LMWH 4 in 100 10 in 100 16 in 100
(96 in 100 will not) (10 in 100 will not) (84 in 100 will not)
With LMWH 1 in 100 3 in 100 5 in 100
(99 in 100 will not) (97 in 100 will not) (95 in 100 will not)