At the start of the study, in February 2008, it was assumed that sufficient organisations (anticoagulation clinics and health care institutions) would participate at the end of the same year to stop the inclusion of new organisations. However, as time passed it appeared that there was a long period between the moment that the interest of an anticoagulation clinic was aroused and the actual agreement with a health care institution to introduce Near-Patient Testing. This resulted in several extensions of the inclusion period, until the final date in July 2009. As the collection of the data took seven months, the last process data were collected in December 2009.

Keywords: Near-Patient Testing