Definition of determinants
In addition to participation in the respective examination (yes/no), additional determinants from the basic data of the AOK Nordost are used to investigate factors influencing the detection of a diagnosis and the initiation of treatment. The basic data contain information on annual gross income, school-leaving qualification and vocational qualification for the employed population as well as information on insurance and occupational status, nationality and region of residence. Some of the basic data are available only for the directly insured person (normally father or mother), since the children or adolescents are co-insured through them, and some data are available for the children or adolescents directly.In terms of school-leaving qualifications of the directly insured person, three categories are formed: (1) no school-leaving qualification and a low-level qualification equivalent to 9 years of schooling were defended as low, (2) an intermediate qualification equivalent to 10 years of schooling corresponded to middle and (3) a qualification in the form of a school graduation certificate or technical diploma equivalent to 12 or 13 years of schooling equalled high. In terms of vocational qualifications of the directly insured person, the following groups are formed: (1) no qualification, (2) completed vocational training and (3) higher degrees from universities and other higher education establishments. In Germany, it is mandatory to be insured in the statutory health insurance, but above a certain income threshold it is possible to be insured in the private health insurance scheme or to be voluntarily insured in the statutory health insurance. Therefore, the insurance/occupational status has been divided into compulsorily insured and voluntarily insured, and there are also the categories of unemployed and other. The latter includes pensioners, rehabilitants and family members. In terms of income of the directly insured person, the insured are divided into three groups: low (less than 70% of median income), medium (70–150% of median income) and high (over 150% of median income) [