Objective To evaluate the current cornea donation awareness of tissue donors in the city of Nanjing, China Methods Altogether 2000 registered tissue donors in the Red Cross Eye Bank of Nanjing by the end of 2010 and ...Objective To evaluate the current cornea donation awareness of tissue donors in the city of Nanjing, China Methods Altogether 2000 registered tissue donors in the Red Cross Eye Bank of Nanjing by the end of 2010 and 2000 control residents of Nanjing in February to June 2011 were randomly selected to par- ticipate in our field questionnaire survey. The questionnaire consisted of questions regarding the understand- ing of cornea donation, the attitude toward cornea donation, and attitude toward legislation and free dona- tion. The awareness of cornea donation between the registered tissue donors and residents was compared. Related factors of the willingness to donate corneas and to become a tissue donor were evaluated with uni- variate and multiple logistic regression analysis. Results A total of 1867 （response rate： 93.4%） tissue donors and 1796 （response rate： 89.8%; ef- fective questionnaires： 1697） residents participated in this survey. For the questions about the knowledge of cornea donation, 90.3% tissue donors （residents： 78.9%） knew that donated corneas could be used for transplantations; 71.2% tissue donors （residents： 47.6%） knew that the appearance would not be destroyed after cornea donation; 70.7% tissue donors （residents： 20.0%） knew the formalities to become a cornea do- nor. For attitude toward cornea donation, 82.2% tissue donors （residents： 45.1%） were willing to donate corneas or eyeballs after death; 84.0% tissue donors （residents： 30.2%） had discussed with their families about donation; 85.1% tissue donors （residents： 24.8%） supported their families＇ or friends＇ cornea donation For attitude toward legislation and free donation, 88.3% tissue donors （residents： 61.3%） approved of legis- lation to regular cornea donation; 72.2% tissue donors （residents： 38.8%） thought that cornea or organ do- nation should be gratis. The difference between two groups was significant （P〈0.001）. However, some tissue donors did not know cornea donation well, some even opposed the legislation of cornea donation and free donation protocol. For the factors influencing the willingness to donate corneas, population was the mostrelevant factor （P〈0.O01）, since tissue donors were more willing to donate corneas than residents. Other significantly related factor were age, gender, occupation, and education level （P〈0.001 ）, while political status or religion were not significant. For the factors related to becoming a tissue donor, older age, male, white-collars （including white-collar, civil servant, teacher, soldier, lawyer, salesman, healthcare provider）, higher education level, party members （including the Chinese Communist Party members, democratic party members, and the CommunistYouth League members） （P〈0.05）. Conclusions The registered tissue donors have better understanding and more positive attitude to- wards cornea donation than control residents do. They approve of the legislation of cornea donation and free donation protocol. It may be more effective to target the population of over 58 years old, male, white-collars, well-educated people, and party members in the promotion of cornea donation.展开更多
Having a large number of timely donations during the early stages of a COVID-19 breakout would normally be considered rare. Donation is a special public goods game with zero yield for donors, and it has the characteri...Having a large number of timely donations during the early stages of a COVID-19 breakout would normally be considered rare. Donation is a special public goods game with zero yield for donors, and it has the characteristics of the prisoners’ dilemma. This paper discusses why timely donations in the early stages of COVID-19 occurred. Based on the idea that donation is a strategy adopted by players during interconnection on account of their understanding of the environment, donation-related populations are placed on social networks and the inter-correlation structures in the population are described by scale-free networks. Players in donation-related populations are of four types: donors, illegal beneficiaries,legal beneficiaries, and inactive people. We model the evolutionary game of donation on a scale-free network. Donors,illegal beneficiaries and inactive people learn and update strategies under the Fermi update rule, whereas the conversion between legal beneficiaries and the other three types is determined by the environment surrounding the players. We study the evolution of cooperative action when the agglomeration coefficient, the parameters of the utility function, the noise intensity, the utility coefficient, the donation coefficient and the initial states of the population on the scale-free network change. For population sizes of 50, 100, 150, and 200, we give the utility functions and the agglomeration coefficients for promoting cooperation and study the corresponding steady states and structural characteristics of the population. We identify the best ranges of the noise intensity K, the donation coefficient α and the utility coefficient β for promoting cooperation at different population sizes. Furthermore, with the increase of the population size, the donor traps are found.At the same time, it is discovered that the initial states of the population have a great impact on the steady states;thus the upper and lower triangle phenomena are proposed. We also find that the population size itself is also an important factor for promoting donation, pointing out the direction of efforts to further promote donation and achieve better social homeostasis under the donation model.展开更多
基金Supported by the Key Medical Science and Technology Development Projects of Nanjing City (ZKX08009)
文摘Objective To evaluate the current cornea donation awareness of tissue donors in the city of Nanjing, China Methods Altogether 2000 registered tissue donors in the Red Cross Eye Bank of Nanjing by the end of 2010 and 2000 control residents of Nanjing in February to June 2011 were randomly selected to par- ticipate in our field questionnaire survey. The questionnaire consisted of questions regarding the understand- ing of cornea donation, the attitude toward cornea donation, and attitude toward legislation and free dona- tion. The awareness of cornea donation between the registered tissue donors and residents was compared. Related factors of the willingness to donate corneas and to become a tissue donor were evaluated with uni- variate and multiple logistic regression analysis. Results A total of 1867 （response rate： 93.4%） tissue donors and 1796 （response rate： 89.8%; ef- fective questionnaires： 1697） residents participated in this survey. For the questions about the knowledge of cornea donation, 90.3% tissue donors （residents： 78.9%） knew that donated corneas could be used for transplantations; 71.2% tissue donors （residents： 47.6%） knew that the appearance would not be destroyed after cornea donation; 70.7% tissue donors （residents： 20.0%） knew the formalities to become a cornea do- nor. For attitude toward cornea donation, 82.2% tissue donors （residents： 45.1%） were willing to donate corneas or eyeballs after death; 84.0% tissue donors （residents： 30.2%） had discussed with their families about donation; 85.1% tissue donors （residents： 24.8%） supported their families＇ or friends＇ cornea donation For attitude toward legislation and free donation, 88.3% tissue donors （residents： 61.3%） approved of legis- lation to regular cornea donation; 72.2% tissue donors （residents： 38.8%） thought that cornea or organ do- nation should be gratis. The difference between two groups was significant （P〈0.001）. However, some tissue donors did not know cornea donation well, some even opposed the legislation of cornea donation and free donation protocol. For the factors influencing the willingness to donate corneas, population was the mostrelevant factor （P〈0.O01）, since tissue donors were more willing to donate corneas than residents. Other significantly related factor were age, gender, occupation, and education level （P〈0.001 ）, while political status or religion were not significant. For the factors related to becoming a tissue donor, older age, male, white-collars （including white-collar, civil servant, teacher, soldier, lawyer, salesman, healthcare provider）, higher education level, party members （including the Chinese Communist Party members, democratic party members, and the CommunistYouth League members） （P〈0.05）. Conclusions The registered tissue donors have better understanding and more positive attitude to- wards cornea donation than control residents do. They approve of the legislation of cornea donation and free donation protocol. It may be more effective to target the population of over 58 years old, male, white-collars, well-educated people, and party members in the promotion of cornea donation.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.72031009 and 71871171)the National Social Science Foundation of China(Grant No.20&ZD058)。
文摘Having a large number of timely donations during the early stages of a COVID-19 breakout would normally be considered rare. Donation is a special public goods game with zero yield for donors, and it has the characteristics of the prisoners’ dilemma. This paper discusses why timely donations in the early stages of COVID-19 occurred. Based on the idea that donation is a strategy adopted by players during interconnection on account of their understanding of the environment, donation-related populations are placed on social networks and the inter-correlation structures in the population are described by scale-free networks. Players in donation-related populations are of four types: donors, illegal beneficiaries,legal beneficiaries, and inactive people. We model the evolutionary game of donation on a scale-free network. Donors,illegal beneficiaries and inactive people learn and update strategies under the Fermi update rule, whereas the conversion between legal beneficiaries and the other three types is determined by the environment surrounding the players. We study the evolution of cooperative action when the agglomeration coefficient, the parameters of the utility function, the noise intensity, the utility coefficient, the donation coefficient and the initial states of the population on the scale-free network change. For population sizes of 50, 100, 150, and 200, we give the utility functions and the agglomeration coefficients for promoting cooperation and study the corresponding steady states and structural characteristics of the population. We identify the best ranges of the noise intensity K, the donation coefficient α and the utility coefficient β for promoting cooperation at different population sizes. Furthermore, with the increase of the population size, the donor traps are found.At the same time, it is discovered that the initial states of the population have a great impact on the steady states;thus the upper and lower triangle phenomena are proposed. We also find that the population size itself is also an important factor for promoting donation, pointing out the direction of efforts to further promote donation and achieve better social homeostasis under the donation model.
