A/HRC/33/53 Other reasons 25. The following countries cited domestic violence: Finland, Germany and Hungary. 26. The following countries cited the recruitment of child soldiers: Austria, Finland and Germany. 27. The following countries cited forced marriage: Austria, Germany and Norway. Special reasons 28. The following countries cited reunification with family members: Austria, Belgium, Czech Republic, France, Germany, Hungary, Ireland, Luxembourg, Netherlands, Poland, Portugal, Slovakia and Slovenia. 29. The following countries cited joining the diaspora or a migrant community: Austria, Belgium, Luxembourg, Poland and Slovenia. 30. The following countries cited education, economic and aspirational reasons: Austria, Belgium, Cyprus, Czech Republic, Finland, France, Germany, Greece, Hungary, Ireland, Luxembourg, Malta, Netherlands, Poland, Portugal, Slovenia, Slovakia, Spain, Sweden and Norway. 31. Although there are different causes and categories of migrant children, the Committee on the Rights of Child recommends being cautious when trying to put migrant children into boxes. The complexity of the migration dynamics could make many children fall into several categories and the excessive categorization could prevent the carrying out of a comprehensive analysis of their human rights situation. III. Situation of unaccompanied migrant children and adolescents 32. In the responses to the questionnaires, most States did not provide accurate data about the living, reception and transit conditions of unaccompanied migrant children. Important information has been provided instead by NGOs. 33. Migratory policies based on detention and deportation have failed to discourage irregular migration. Usually, transit migrants use less guarded and riskier areas. An increasing number of migrant families hoping to make the journey abroad contact traffickers, which may lead to the separation of children from their families, leaving most children without any protection. Migrant children usually choose to go through country roads and thus are not very visible to the local population, the organizations offering services and the immigration authorities. 34. Unaccompanied migrant children separated from their families are the most vulnerable group among all migrants; the lack of information about their situation is one of the most important barriers faced by institutions and States seeking to effectively protect their rights. 35. Across the European Union, age determination procedures are frequently intrusive and unreliable and unaccompanied children are often subjected to the same violations as undocumented adults. If apprehended and, in particular, if not recognized as children, 7