These include the policyholder's claims history, postcode, age of driver and car, occupation, class of usage, type of cover, modifications to the car and convictions.
For each respondent we collected demographic information, such as gender, age, family size, education, occupation class, location of residence, and income (see Supplementary Methods for details on the social survey).
Each record has a photograph attached of the student, name, class year, birth date, college attended, degree awarded, parent's name and occupation, class standing, final grades, as well as grades in subjects such as anatomy, biochemistry and neurology.
Second, using multilevel analysis, we assessed the micro relationship between individuals' social position (education level, occupation class, employment sector and household registration) and their income.
Specifically, questions arise as to how social structures, such as differences in education level, occupation class and employment sector, are influenced by privatisation processes and how this in turn results in differences in individuals' income levels.
We also found significant effect modification by educational attainment and occupation class.
10 11 Participants reported their occupation, enabling occupational class to be ascertained based on the registrar general's classification of occupations.
Prospective policies addressing preventive actions and increased awareness focusing on low-income communities are highly recommended and to consider age, gender, ethnic backgrounds, and occupation classes.
For analytic purposes, the social class data were collapsed into four categories: all non-manual occupations (class I, II and IIINM), skilled manual (class IIIM), semi-skilled and unskilled manual (class IV and V) and missing.
The biggest percentage difference between the genders (18.3%), and the only value to reach statistical significance (due to insufficient numbers in the other two strata), was found in the routine and manual occupations class.
And there were all these people from different parts of the community – different races, occupations, classes, ages – all coming together".
