It was created in 1994 to assess households’ eligibility for the subsidised health care system. In 2010, 8 institutions and 31 social programmes were using the Sisben score as eligibility criteria (including Familias en Action and SENA). Sisben aims at assessing households’ quality of life, based on interviews (29 million people are covered) with questions along 5 main dimensions (health status, education, housing and access to public services, individual vulnerability (mainly age and disability), and social vulnerability (environmental and public health risks, security conditions). On the basis of their answers, households are grouped into one of the six Sisben levels - level 1 is the most deprived group, levels 1 and 2 are entitled to the subsidised health system.