Table 4

Study of United Kingdom electricity generation and transmission workers: distribution of deaths and person-years at risk for study subjects with work histories (n=79 972), 1973–97

Chronic lymphatic leukaemia (CLL)4-150 Other leukaemia4-151 All leukaemia4-152 All other causes4-153 Person-years at risk
Estimated cumulative exposure to magnetic fields (μT.y):
 0–2.42139606090930589
 2.5–4.9315181581164656
 5.0–9.9515202570220076
 10.0–19.9710172246174386
 ⩾20.036970173404
Age:
 15–190002215176
 20–240002854700
 25–290114398219
 30–3402281140873
 35–39022153167227
 40–44088229177060
 45–49066457182771
 50–54189860186126
 55–59312151534181532
 60–64610162365156070
 65–691217292894112349
 70–74101222249262212
 75–796511147823429
 80–841235525367
Sex:
 Male3775112125361363200
 Female21012652199911
Calendar period:
 1973–793581264277664
 1980–84517222223375844
 1985–89729363121366254
 1990–972434586580543349
Year of starting employment:
 <194633674031667
 1946–641933526394458199
 1965–72929384116486891
 ⩾1973820281938586354
Period from first employment (y):
 0–9156752351041
 10–19829372961568945
 20–291126374392398686
 ⩾301925445083244439
Employment status4-154:
 Still employed219212174674132
 Left employment376610311014888979
Negotiating body (pay and conditions):
 NJM10113310960
 NJB516211820354839
 NJC612181200252053
 NJIC2655819808929972
 NJ(B+C)E12321013725
 Not known000171562
Total3985124131881563111

  • ↵4-150 Any part of death certificate coded to ICD-9 204.1.

  • ↵4-151 Any part of death certificate coded to ICD-9 204–208, excluding ICD-9 204.1.

  • ↵4-152 Any part of death certificate coded to ICD-9 204–208.

  • ↵4-153 No part of death certificate coded to ICD-9 204–208.

  • ↵4-154 Subjects enter person-years at risk for left employment category 3 months after date of leaving.