Abstract：Objective To investigate the characteristics of volunteer blood donors with regular apheresis platelets in Zhoushan City, Zhejiang Province, so as to provide insights into recruitment of regular blood donors. Methods Gender, age, occupation, educational level, and volume and times of blood donation were collected from volunteer blood donors with apheresis platelets in Zhoushan Central Blood Station during the period from 2019 to 2021 through the Zhejiang Provincial Blood Management Information System BIS version 3.0, and the willingness of blood donation, routes for acquiring blood donation knowledge and cause of blood donation were collected from volunteer blood donors with regular apheresis platelets using questionnaire surveys. The factors affecting regular apheresis platelets were identified among volunteer blood donors using a multivariable logistic regression model. Results Totally 236 volunteer blood donors participated in regular apheresis platelets in Zhoushan City from 2019 to 2021, accounting for 51.08% of all volunteer blood donors with regular apheresis platelets, and there were 1 488 blood donations, accounting for 71.23% of all volunteer blood donations with apheresis platelets. A total of 2 086.00 U platelets were donated, accounting for 71.82% of all volumes of volunteer blood donations with apheresis platelets. The volunteer blood donors included 160 men (67.80%) and 76 women (32.20%) and had an age of 35 (17) years. There were 63 employees (26.69%) and 111 with a bachelor degree and above (47.03%). Multivariable logistic regression analysis showed a high proportion of regular blood donations among participants at ages of 31 to 60 years (OR:1.767-3.257, 95%CI: 1.010-6.250), university students (OR=2.598, 95%CI: 1.238-5.450) and civil servants (OR=2.733, 95%CI: 1.193-6.263). There were 228 participants with willingness to continue to participate in volunteer blood donation with regular apheresis platelets (96.61%), and 215 participants with a history of participating in volunteer blood donation surveys (91.10%). Internet was the predominant route for acquiring knowledge about apheresis platelet donation (41.10%), and “think that blood donation is a meaningful thing” was the predominant cause of participating in volunteer apheresis platelet donation (33.05%). Conclusions There is a high proportion of regular blood donation among civil servants and university students.
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