The following socio-demographic variables were assessed for all patients: Age, gender, nationality, native language, emergency versus elective hospital admission, length of hospital stay, individual department where patients received their main treatment and hospital readmissions within the same study period.
To develop a sociodemographic risk profile, the following data were assembled: date of birth, gender, profession (scholars, employees, non-employed persons, pensioners), place of residence [village/small town (<50000), metropolis (>50000)], kind of habitation (apartment sharing, single), nationality (native, foreign).
The population register contains information on all registered persons living in the Netherlands, including date of birth, gender, current address, postal code, nationality, native country (both of registered person and his/her parents), date of death and date of emigration.
Standardized questionnaires were used to obtain demographic variables (native country and nationality of the parents and children, first language, school duration, graduation and working position of the parents, number of family members).
Immigrant status was defined in terms of nationality or native language.
18 The PR contains information on all legally residing citizens in the Netherlands, including date of birth, gender, current address, postal code, nationality and native country.
Stalin's nationality policy promoted native cadres and cultures, but this changed in the late 1920s.
As the pieds-noirs grew in number and status, the native Algerians, who had no nationality under French law, did not officially exist.
In all three countries virtually everyone among the titular nationalities speaks the native tongue as their first language, which is remarkable in light of the massive Russian immigration to the Baltic states during the second half of the 20th century.
