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Table 2 Distribution of job years worked for cases and controls according to ISCO-88 in levels of the Carcinogenic Agent Index (CAI)

From: Occupation and educational inequalities in laryngeal cancer: the use of a job index

Description of jobs (ISCO88-2 digits) Cases % Controls %
High 55.6 33.9
  Building electricians, bricklayers and miners, roofers (71) 18.3 10.5
  Metal and machinery workers (72) 10.6 5.2
  Chemical- and wood- processing and power- production plant operators (81) 10.4 5.1
  Printing-, plastic-, wood-, rubber-, cement-, textile- and chemical- products machine operators (82) 7.1 3.0
  Agricultural and earth-moving plant operators (83) 2.9 0.4
  Bakers, cabinet makers (74) 2.5 3.3
  Forestry workers (61) 1.8 1.8
  Others a 2.0 4.6
Upper middle 27.0 29.7
  Heavy-truck, car, taxi, van, bus, tram drivers (83) 6.2 5.3
  Mechanical machine assemblers (82) 3.6 2.0
  Machine-tools, electrical equipment setters and fitters (72) 2.8 4.0
  Compositors, typesetters, printing engravers and etchers (73) 2.3 1.2
  Market gardeners, crop- and tree growers, dairy and livestock producers (61) 2.1 1.5
  Cooks and police officers (51) 1.9 1.5
  Shops sales persons and demonstrators (52) 1.6 1.6
  Physical science, mechanical, physical, electrical and electronics engineering technicians, quality inspectors (31) 1.3 4.6
  Street vendors, building caretakers (91) 1.2 0.7
  Agricultural, fishery and related workers (92) 1.0 0.2
  General managers in wholesales, restaurants and hotels (13) 1.0 1.6
  Others a 2.0 5.5
Lower middle 12.0 22.9
  Data entry, stock, transport, mail and sorting clerks (41) 3.3 4.5
  Directors, production and operations department managers (12) 2.6 4.2
  Customs, tax professionals, technical and commercial sales representatives, social work associate professionals (34) 1.9 4.3
  Draughts persons, civil engineering technicians, broadcasting and telecommunications equipment operators (31) 1.3 1.4
  Civil engineers, architects (21) 0.4 4.2
  Others a 2.5 4.3
Low 5.5 13.6
  Insurance representative, estate agents, buyers, bookkeepers (34) 2.4 5.5
  Business professionals, judges, interpreters, psychologists, religious professionals, legal professionals, writers, journalists, economists (24) 1.4 2.3
  General department managers (12) 0.4 1.2
  College, university and higher education teachers (23) 0.0 0.9
  Others a 1.3 3.7
  1. ajob categories with a frequency of less than 1%.
  2. Total percentage of job years for each category of CAI are presented in bold.