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Table 1 Leukaemia incidence by age among males in the Town of Union, Broome County, NY: 1981–90.

From: Leukaemia incidence among workers in the shoe and boot manufacturing industry: a case-control study

Age Group

Number of cases

SIR

95% C. I.a

 

Observed

Expectedb

 

Lower CI

Upper CI

0–44

6

7.5

0.80

0.29

1.75

45–64

7

10.0

0.70

0.28

1.44

65–74

21

10.1

2.09

1.29

3.19

75+

20

12.7

1.57

0.96

2.42

Total

54

40.4

1.34

1.01

1.75

  1. a Exact 95% confidence intervals calculated for the Poisson distribution30.
  2. b Expected numbers based on the NYSDOH Bureau of Cancer Epidemiology Cancer Incidence Standard: 1983–1987, which includes age and sex specific cancer rates for population density Quintile III (suburban). Population of the study area based on 1986 estimated population of the Town of Union based on linear interpolation between 1980 and 1990 Census population estimates.
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Environmental Health

ISSN: 1476-069X