dr.eva-maria merz sanquinresearch ...kongre.kanver.org/files/12.pdf · dr.eva-maria merz...
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P-
D R . E VA - M A R I A M E R Z
S A N Q U I N R E S E A R C H & V R I J E U N I V E R S I T E I T A M S T E R D A M , T H E N E T H E R L A N D S
A N TA LYA 3 N O V E M B E R 2 0 1 9
14/11/2019 DONORS 1
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“Final donation for man whose blood saved 2.4M babies”
14/11/2019 DONORS 2
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Research on (Blood) Donor Behaviour
•Identify determinants of onset, continuation and cessation of donating
•Influence donor behaviour via targeted marketing, recruitment and retention strategies
14/11/2019 BACKGROUND STUDY 3
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Donors of Substances of Human Origin
•Help strangers repeatedly
•Personal costs
•Different motivations
•High degree of free-riding
•(Anonymous)
14/11/2019 DONORS 4
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Donors in Europe and The Netherlands
14/11/2019 DONORS 5
Huis in ‘t Veld, De Kort, Merz (2019), Transfusion
•~330.000 VNRD (2018)
•~3.5% age eligible Dutch population
•80% whole blood donors
•
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Reasons for Withdrawal•Medical (e.g. repeated low Hemoglobin levels)
•Reaching the upper age limit
•Inactivation donor’s own request (personal reasons, without reasons)
•Lapse due to non-response to repeated invitations
Social cognitions and personality have been linked to a wide variety of illness behaviours including voluntary non-compliance.
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14/11/2019 BACKGROUND STUDY 6
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Method•Donor Motivation: Dutch first time WB donor cohort study
•N = 2,964 (response rate 61%)
•Donor data base (eProgesa) for stop/continue data
METHOD 7
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14/11/2019
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Method
Cox regression analysis
METHOD
Reached age limit
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Donor Characteristics (N = 2,964)
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RESULTS14/11/2019
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Donor Characteristics (N = 1,081)
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RESULTS14/11/2019
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Hazard Ratios for Single Predictors
14/11/2019 RESULTS 11
Adjusted for age, gender,
blood group, # invitations,
# previous donations
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Adjusted Hazard Ratios
14/11/2019 RESULTS 12
Adjusted for age, gender,
blood group, # invitations,
# previous donations
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Conclusions
•Certain social cognitions more likely to stop donating on own request (before medical check and 1st donation)
•Lapse is not the opposite of return!
•Especially is high predictor intervention?
• is repeatedly shown to asscoiate with donor behaviour (i.e. no show and withdrawal)
•Personalize recruitment, intervention and retention
14/11/2019 CONCLUSION 13
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Acknowledgement
- !
Wim de Kort
Anne van Dongen
Eamonn Ferguson
14/11/2019 ACKNOWLEDGEMENT 14