Abásolo Ignacio, Tsuchiya Aki
Departamento de Economía de las Instituciones, Estadística Económica y Econometría, Facultad de Ciencias Económicas y Empresariales, Universidad de La Laguna, Campus de Guajara, 38071, La Laguna, Tenerife, Spain,
Eur J Health Econ. 2014 Apr;15(3):313-21. doi: 10.1007/s10198-013-0496-x. Epub 2013 Jun 25.
A voluntary blood donation system can be seen as a public good. People can take advantage without contributing and have a free ride. We empirically analyse the extent of free riding and its determinants. Interviews of the general public in Spain (n = 1,211) were used to ask whether respondents were (or have been) regular blood donors and, if not, the reason. Free riders are defined as those who are medically capable to donate blood but do not. In addition, we distinguish four different types of free riding depending on the reason given for not donating. Binomial and multinomial logit models estimate the effect of individual characteristics on the propensity to free ride and the likelihood of the free rider types. Amongst those who are able to donate, there is a 67 % probability of being a free rider. The most likely free rider is female, single, with low/no education and abstained from voting in a recent national election. Gender, age, religious practice, political participation and regional income explain the type of free rider.
自愿献血系统可被视为一种公共物品。人们可以不做贡献却从中受益，即搭便车。我们对搭便车的程度及其决定因素进行了实证分析。通过对西班牙公众（n = 1211）进行访谈，询问受访者是否是（或曾经是）定期献血者，若不是，则询问原因。搭便车者被定义为那些有医学能力献血但却不献血的人。此外，我们根据不献血的原因区分了四种不同类型的搭便车行为。二项式和多项逻辑回归模型估计了个体特征对搭便车倾向以及不同类型搭便车者可能性的影响。在有能力献血的人群中，成为搭便车者的概率为67%。最有可能成为搭便车者的是女性、单身、受教育程度低/未受过教育且在近期全国选举中未投票的人。性别、年龄、宗教活动、政治参与和地区收入解释了搭便车者的类型。
