The goal of this study was to propose a systematic classification of relevant personal factors for describing the background of an individual's life and way of living. The German Society of Social Medicine and Prevention constituted an ICF working group consisting of members from Medical Advisory Boards of Statutory Health Insurances (n = 6) and other institutions (n = 12) in 2009. A two-tier consensus building approach was utilised to construct and document the personal factors, with an initial team of experts compiling the personal factors and a second group of experts, who had not participated in developing the initial proposal, validating the process. The consensus process resulted in personal factors classified into 72 categories and arranged in six chapters as follows: general factors normally unchangeable (chapter 1); a person's inherent physical and mental constitution (chapters 2 and 3); more modifiable factors, such as attitudes, basic skills and behaviour patterns (chapter 4); life situation and socioeconomic/sociocultural factors (chapter 5); and other health factors e.g., prior interventions (chapter 6). We believe the personal factors from this effort to be a good basis for a wider global dialogue on their operationalisation.
Keywords: ICF, contextual factors, personal factors, attributes, German Society forSocial Medicine and Prevention (DGSMP) The International Classification of Functioning, Disability, and Health, ICF (World Health Organization, 2001) is gaining more and more ground in terms of interest, recognition, and use in Germany, especially in the fields of social medicine, medical and vocational rehabilitation (Rentsch & Bucher, 2005;Ewert, Freudenstein, & Stucki, 2008). When the ICF was endorsed by the World Health Organization (WHO) in 2001, there was great support for the idea of expanding the model for classifying impairment, disability, and handicap. Since that time, classification efforts have expanded beyond the sequelae of diseases. Additionally, they have also addressed the potential influence of external environmental factors, as well as the internal contexts that are integral to the individual. Contextual factors are extremely important in working with the ICF (Fries & Fischer, 2008). Personal factors play an essential part in effecting health problems and the impact of disability on inclusion. WHO describes personal factors as internal factors, which 'may include gender, age, coping styles, social background, education, profession, past and current experience, overall behaviour pattern, character and other factors that influence how disability is experienced by the individual' (WHO, 2001, p. 11). We define personal factors as the particular background of an individual's life and living, including features of the individual that are not part of a health condition or health states, and which can impact functioning positively or negatively. Nevertheless, personal factors are not yet classified in the ICF; 'Their assessment is left to the user, if needed' (WHO, 2001, p. 19). ...