Table 4

Proportion of socioeconomic status (education and occupation) explained by tobacco smoking and alcohol consumption in head and neck cancer (1017 cases and 951 controls)

Socioeconomic statusProportion*
Education
 >8 yearsReference
 4 to 8 years100%
 <4 years54%
Occupation
 Non-manual (I, II, IIIN)Reference
 Manual (IIIM, IV, V)45%
  • * Proportion of differences explained by the differential exposure to tobacco smoking and alcohol consumption across socioeconomic strata.15

  • Classified according to the British Registrar.10