The NS-SEC classification is based on employment status of the household reference person at the time of the interview.
The 8-point NS-SEC classification was dichotomised into 'high' (managerial, professional & intermediate occupations) and 'low' (routine & manual occupations) socio-economic status.
The CTVB categorisation appears to be at least as strongly associated with the health outcomes in this study as the NS-SEC classification, and also offers a measure that can be used to assess non-response bias to population surveys.
Each NS-SEC classification contained absolute non-consumers of whole grain with 9 % absolute non-consumers in class 1 (high managerial and professional occupations) increasing up to 26 and 20%% in those in routine occupations and never worked, respectively.
Considering foods with ≥ 51%% whole grain, the trend across NS-SEC classifications was less varied between high managerial/professional, low managerial/professional, intermediate, small employers, lower supervisory/technical and semi-routine occupations.
Furthermore, the unavailability of certain information on the fathers' occupation such as the level of autonomy and working conditions, made it impossible to have used the more recent NS-SEC occupational classification of SES, which is more salient than the Registrar Generals classification.
For social status the short version of NS-SEC 3 category classification was used managerial/professional, intermediate and routine/manual.
The Team Sky rider gained two minutes on his nearest rival Alejandro Valverde and leads the Spaniard by three minutes 25 secs in the general classification.
Currently in UK a National Statistics Socio-economic classification (NS-SEC) is used to calculate a measure for socio-economic status based on one's job and employment relations.
The RII for the Japanese Socioeconomic Classification [J-SEC] was reduced, not significantly, by 22%95%5% CI −6.3, 100.0) in men in the corresponding model, while J-SEC was not associated with self-rated health in women.
