Table 5

Distribution of deaths and person years at risk, 1947–98

Variable with levelsDeaths (n)Person-years-at-risk
Lung cancer*Chronic obstructive pulmonary disease†All causes
*Any mention of ICD-8 162 or ICD-9 162 on death certificate.
†Any mention of ICD-8 490-493 or ICD-9 490–496 on death certificate.
Cumulative exposure to cadmium (μg/m3/y)
<40011181279416.7
400–159919151036655.3
1600–4799910996860.7
⩾4800816934484.5
Age
14–19000170.4
20–24000636.7
25–290021539.8
30–341142214.2
35–390032688.5
40–4400103126.0
45–4921133472.1
50–5415363516.0
55–5967463139.7
60–6489512658.7
65–69513732020.0
70–741111771295.7
75–7910364676.0
80–843943263.6
Time period
1947–550021090.5
1956–602071753.7
1961–6544242315.5
1966–70410363116.7
1971–7564423550.2
1976–80610503818.0
1981–8534683560.1
1986–901012723145.4
1991–9598642720.2
1996–200037572346.9
Year of hire
1947–5117171085428.1
1952–5613161256577.5
1957–6613211319824.1
1967–7545585587.5
Employment status
Still employed68468375.8
Left employment415137619041.4
Total475942227417.2