Table 1

Characteristics of study population of rubber workers (n=36 442)

Characteristicn (%)Person-years
Age in 1967 (at study start) (years)
 35–4411 595 (31.8)387 592
 45–5413 220 (36.3)315 067
 55–6410 852 (29.8)170 706
 65+775 (2.1)8822
Decade of employment start
 <19301801 (4.9)29 533
 1930–19393570 (9.8)76 074
 1940–19497798 (21.4)180 841
 1950–195912 439 (31.1)314 239
 1960–196610 834 (29.7)281 500
Industry sector
 Tyre14 906 (40.9)362 093
 Non-tyre21 536 (59.1)520 094
Departments
 Job groups
Crude materials
 Storeman178 (0.5)3767
 Compounding/pre-processing3574 (9.8)83 431
 Latex mixing424 (1.2)9586
 Extruding and calendaring3461 (9.5)82 664
 Component building4037 (11.1)101 068
Curing/vulcanising
 Moulding4710 (12.9)118 909
Finishing
 Inspection1954 (5.4)46 239
 Finished goods2375 (6.5)52 914
 Site workers2056 (5.6)42 105
 Engineering6137 (16.8)144 483
 Canteens30 (0.1)606
 Factory operations5728 (15.7)146 273
 Commercial staff485 (1.3)13 381
 Engineering staff378 (1.0)10 490
 Technical staff915 (2.5)26 272
Vital status
 Alive*2125 (5.8%)99 110
 Dead34 181 (93.8%)781 001
  Dead, no cause of death1939 (5.3%)38 976
  Embarked/registration cancelled136 (0.4%)2075
 Total 36 442 (100)882 187
  • *Includes 125 deaths where date of death >31 December 2015.

  • †Excludes 4425 untraced individuals from the original study (n=40 867).