The questionnaire used in this research constitutes of a preamble and 02 parts the preamble had an as objective to define the theme of research, it equally constituted of some personal information of the respondents such as: age, gender, present occupation in the enterprise.
Social class stratification was based on the Oyedeji classification which is derived from the level of education and present occupation [ 13].
Articles were coded for the following criteria: number of authors, present occupation of author(s), countries of author(s), funding, research design, research subject, and research topic (in the case of empirical research).
While all those in employment had a social class based on their present occupation, many of the economically inactive were not assigned a social class independent of their present employment status (being coded as long term unemployed, never worked, or not known for other reason).
In the present study, occupation data were obtained from highly valid prospective registry data, thus, we consider recall bias on this factor not to be a problem.
There were positive associations between high compared to low mobile phone use and current stress, sleep disturbances, and symptoms of depression (two items) for both the men and the women, after adjusting for relationship status, educational level, and present occupation (Table 3).
Demographic data: origin (country and ethnic community), age, gender, educational level, religion, marital status, number of children, people in the household, length of stay in Europe (years of immigration), present occupation, employment situation (legal/illegal), grade of comprehension and use of the official languages of Catalonia (Catalan/Spanish).
At the risk of giving a personally biased account, in this series of articles my intention is to explain the how's and why's of my present occupation and how I successfully got there.
