CRC/GC/2005/6 page 27 100. Data collected within such a system should ideally include but not be limited to: basic biographical data on each child (including age, sex, country of origin and nationality, ethnic group); total number of unaccompanied and separated children attempting to enter the country and the number that have been refused entry; number of requests for asylum; number of legal representatives and guardians assigned to such children; legal and immigration status (i.e. asylum-seeker, refugee, temporary resident permit); living arrangements (i.e. in institutions, with families or living independently); enrolment in school or vocational training; family reunifications; and, numbers returned to their country of origin. In addition, States parties should consider collecting qualitative data that would allow them to analyse issues that remain insufficiently addressed, such as for instance, disappearances of unaccompanied and separated children and the impact of trafficking. Notes 1 These Guiding Principles are jointly endorsed by the International Committee of the Red Cross, the International Rescue Committee, Save the Children/UK, UNICEF, UNHCR, and World Vision International. They are intended to guide the work of all members of the Inter-Agency Standing Committee with respect to unaccompanied and separated children. 2 Vienna Declaration and Programme of Action (A/CONF.157/23) adopted by the World Conference on Human Rights, held in Vienna, 14-25 June 1993. 3 On child-specific forms and manifestations of persecution more generally, see section VI (d) below “Child sensitive assessment of protection needs, taking into account persecution of a child-specific nature”. -----