Given the time frame, discounting was not required. Costs but few quantities were provided. The costs measured were pharmaceutical costs, diagnosis of VTE tests, the cost of the hospital room and the cost of complications. Quantities, including the average duration of hospital stay for patients with VTE (5 days) and the average duration of hospital stay for patients with major bleeds (8 days), were reported, but the source was not. Unit costs were based on actual data. The cost data were obtained from the clinical cost manager of the institution. Fiscal year 1994 price data were used. The perspective of the study was stated as the health care system.