A/RES/69/194 United Nations Model Strategies and Practical Measures on the Elimination of Violence against Children in the Field of Crime Prevention and Criminal Justice treated in a manner that is fully compatible with their best interests, that they are separated from adults when necessary to protect them and, when applicable, to sever relationships with smugglers and traffickers, and that a legally appointed representative is available from the moment an unaccompanied child is detected by the authorities; (b) To conduct regular analyses of the nature of the threats faced by these children and to assess their needs for assistance and protection; (c) To uphold the principle of burden-sharing and solidarity with the host country and to enhance international cooperation. III. Promoting research and data collection, analysis and dissemination 18. Member States, the institutes of the United Nations crime prevention and criminal justice programme network, relevant entities of the United Nations system, other relevant international organizations, research institutes, non-governmental organizations and professional associations are urged, as appropriate: (a) To set up and strengthen mechanisms for the systematic and coordinated collection of data on violence against children, including on violence against children in contact with the justice system; (b) To monitor and publish periodic reports on cases of violence against children reported to the police and other criminal justice agencies, including the number of cases, apprehension or arrest and clearance rates, prosecution and case disposition with regard to the alleged offenders and the prevalence of violence against children and, in so doing, to make use of data derived from population-based surveys. The reports should disaggregate data by type of violence and include, for example, information on the age and sex of the alleged offender and his or her relationship to the victim; (c) To develop a multilevel system of reporting, starting from the most basic unit of government to the national level and to allow, in accordance with national legislation, the exchange of relevant information, statistics and data among all relevant institutions to help to ensure comprehensive data gathering for policy and programme development that will promote child protection; (d) To develop population-based surveys and child-sensitive methodologies aimed at collecting data regarding children, including crime and victimization surveys, to allow for assessment of the nature and extent of violence against children; (e) To develop and implement indicators relating to the performance of the justice system in preventing and responding to violence against children; (f) To develop and monitor indicators relating to the prevalence of violence against children in contact with the justice system; (g) To evaluate the efficiency and effectiveness of the justice system in meeting the needs of child victims of violence and preventing such violence, including with regard to the way in which the justice system treats child victims of violence, the use it makes of different intervention models and the degree to which it cooperates with other agencies responsible for the protection of children, and also to evaluate and assess the impact of current legislation, rules and procedures relating to violence against children; (h) To collect, analyse and disseminate data on independent inspections of places of detention, access to complaint mechanisms by children in detention and outcomes of complaints and investigations in accordance with the obligations of States under international human rights law; 12/29