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Table 1 Distribution of job years worked for cases and controls according to ISCO-88 in levels of the Overall Job Index (OJI)

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

Description of jobs (ISCO88-2 digits) Cases% Controls%
High 36.0 19.8
  Bricklayers, plumbers, carpenters, miners, building constructors, roofers (71) 15.1 8.4
  Mechanics, metal and machinery workers (72) 7.7 5.1
  Printing-, plastic-, wood-, textile-, chemical-products machine operators (82) 4.8 1.9
  Agricultural and earth-moving plant operators (83) 3.5 0.8
  Forestry workers (61) 1.8 1.9
  Fire fighters, cooks and waiters (51) 1.2 0.9
  Others a 1.9 0.8
Upper middle 45.7 36.8
  Mining, chemical- processing plant operators, well drillers and borers, paper-pulp and chemical-heat treating plant operators (81) 9.1 5.1
  Mechanical, metal products assemblers (82) 5.9 3.2
  Agricultural or industrial machinery mechanics and fitters, electrical and electronic equipment mechanics and fitters (72) 5.5 5.4
  Heavy-truck drivers (83) 4.7 4.3
  Building electricians (71) 3.2 2.1
  Printing engravers and etchers, glass and ceramic decorators (73) 2.5 1.4
  Cabinet makers (74) 2.6 3.6
  Market gardeners (61) 2.0 1.5
  Mail and sorting clerks (41) 1.8 3.7
  Shop salespersons and demonstrators (52) 1.6 1.6
  Police officers (51) 1.4 0.8
  Agricultural and fishery workers (92) 1.3 0.4
  General managers in wholesales, restaurants and hotels (13) 1.0 1.5
  Others a 3.1 2.2
Lower middle 12.4 28.5
  Directors, production and operations department managers (12) 3.1 6.6
  Buyers, trade brokers, business services agents and trade brokers, athletes, sportspersons, police inspectors and detectives, decorators and commercial designers (34) 2.3 6.1
  Chemical, physical science, civil, electronics and telecommunications engineering, mechanical technicians, computer assistants (31) 1.3 4.2
  Car, taxi and van drivers (83) 1.3 0.7
  Computer system designers, civil engineers, architects (21) 1.1 2.3
  Authors, journalists and other writers (24) 0.9 0.5
  Teachers (23) 0.4 2.8
  Others a 2.0 5.3
Low 6.1 14.9
  Accounting and book-keeping clerks (41) 2.8 5.1
  Bookkeepers, administrative secretaries (34) 2.0 3.8
  Mechanical, electrical, electronics and telecommunications engineers, mathematicians (21) 0.9 0.6
  Business professionals, judges, interpreters, psychologists, religious professionals (24) 0.4 1.9
  Others a 0.0 3.5
  1. ajob categories with a frequency of less than 1%.
  2. Total percentage of job years for each category of OJI are presented in bold.