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. 2020 Jul 20;20:1143. doi: 10.1186/s12889-020-09253-9

Table 2.

Independent Variables: a definition

Variable Description
Demographic
 Male 1 if male; 0 otherwise
 Age1 Age in years at the time of the survey interview - 15/34 years, 0 otherwise
 Age2 Age in years at the time of the survey interview - 35/54 years, 0 otherwise
 Age3 Age in years at the time of the survey interview - 55/74 years, 0 otherwise
 Age4

Age in years at the time of the survey interview - 75/89 years, 0 otherwise

(reference group)

 Has a spouse or a partner 1 if she/he has a spouse or a partner, 0 otherwise
 Has a child 1 if she/he has at least one child and 0 otherwise
 Low level of education

1 if highest level of education is primary education, 0 otherwise

(reference group)

 Middle level of education 1 if highest level of education is secondary education, 0 otherwise
 High level of education 1 if highest level of education is tertiary education, 0 otherwise
 Ends meet How the interviewee household total monthly income is able to make ends meet (from 1 very easily to 6 with great difficulty)
Job characteristics
 Permanent job 1 if the employment contract has an unlimited duration, 0 otherwise
 Part time job 1 if she/he works part time, 0 otherwise
 How many hours1

N. of hours the interviewee usually works per week - 1/20 h, 0 otherwise

(reference group)

 How many hours2 N. of hours the interviewee usually works per week - 21/40 h, 0 otherwise
 How many hours3 N. of hours the interviewee usually works per week - 41/50 h, 0 otherwise
 How many hours4 N. of hours the interviewee usually works per week - 51/105 h, 0 otherwise
 Health risk 1 if the worker thinks that her/his health or safety is at risk because of her/his work, 0 otherwise
 Work affects health1 1 if her/his work affects health mainly positively, 0 otherwise
 Work affects health2 1 if her/his work affects health mainly negatively, 0 otherwise
 Work affects health3 1 if her/his work does not affect health, 0 otherwise (reference group)
 External Contacts 1 if her/his work involves visiting customers, patients, clients or working at their premises or in their home, 0 otherwise
 Work and Family 1 if her/his working hours fits in with her/his family or social commitments outside work, 0 otherwise
 Trade Union 1 if within her/his company or organisation there is trade union, 0 otherwise
 Job satisfaction 1 if she/he is satisfied with working conditions, 0 otherwise
Relationships on the job
 Colleagues Support1 1 if her/his colleagues help and support her/him (always, most of the time), 0 otherwise
 Colleagues Support2 1 if her/his colleagues help and support her/him (sometimes), 0 otherwise
 Colleagues Support3

1 if her/his colleagues help and support her/him (rarely, never), 0 otherwise

(reference group)

 Manager Support1 1 if her/his manager helps and supports her/him (always, most of the time), 0 otherwise
 Manager Support2 1 if her/his manager helps and supports her/him (sometimes), 0 otherwise
 Manager Support3

1 if her/his manager helps and supports her/him (rarely, never), 0 otherwise

(reference group)

 Colleagues Cooperation If there is good cooperation between she/he and her/his colleagues (from 1 strongly agree to 6 strongly disagree)
 Get on well Colleagues If generally she/he gets on well with her/his work colleagues (from 1 strongly agree to 6 strongly disagree)
Relationships outside the job
 Volunteering 1 if she/he performs volunteer activities, 0 otherwise
 Recreational activities 1 if she/he performs sporting, cultural or leisure activity outside her/his home, 0 otherwise
Job sector
 Private 1 if the interviewee works in the private sector, 0 otherwise
 Public 1 if the interviewee works in the public sector, 0 otherwise
 Other 1 if the interviewee works in a joint private-public organisation or company or the not-for-profit sector or an NGO or other, 0 otherwise (reference group)
Kind of occupation
 Armed forces

1 if the worker perform an armed forces occupation, 0 otherwise

(reference group)

 Managers 1 if the worker is a manager, 0 otherwise
 Professionals 1 if the worker is a professional, 0 otherwise
 Technicians 1 if the worker is a technician, 0 otherwise
 Clerical 1 if the worker is a clerical support worker, 0 otherwise
 Service sales 1 if the worker is a service and sales worker, 0 otherwise
 Skilled agricultural forestry fish 1 if the worker is a skilled agricultural, forestry and fish worker, 0 otherwise
 Craft trades 1 if the worker is craft and related trades worker, 0 otherwise
 Plant machine 1 if the worker is a plant and machine operators, and assemblers, 0 otherwise
 Elementary occupation 1 if the worker perform an elementary occupation, 0 otherwise