About Donor InSight
In the Netherlands the blood supply is dependent on voluntary non-remunerated donors. Sanquin Blood Supply, by law the only blood bank in the Netherlands, has an extremely loyal donor population of about 2.5% of the Dutch population that make approximately 800.000 donations per year. Donor InSight (DIS) is a cohort study among this donor population.
Two questionnaire rounds, DIS-I in 2007-2009 (n=31,338) and DIS-II in 2012-2013 (n=34,823, of whom 22,132 also participated in DIS-I), were completed to gain more insight into characteristics of donors, their motivations and health. The questionnaires consist of questions regarding demographics, donation, lifestyle, family composition, health and disease. DIS data can (routinely) be linked to the donor database, with details on all donations, containing donor screening results including the donor health questionnaire answers, blood pressure and haemoglobin measurements.
A second follow-up round on a subset of the DIS population (DIS-III, n=3,000) is planned for 2014-2015. This round will include DNA sequencing, analyses of markers of iron metabolism and additional questions on iron-deficiency related symptoms.
Knowledge of donor behaviour, health effects of donation and donor characteristics is needed to enhance strategies to recruit new donors, reduce the number of deferred donors and keep donors healthy. Apart from that, DIS provides a unique opportunity to study questions in the fields of blood transfusion, public health, social sciences, epidemiology, (bio) statistics and haematology.
Donor InSight was performed by the Department of Donor Studies and the Unit Donor Services with financial support of Sanquin Blood Supply Foundation.