nickel.expand | R Documentation |
The data concern a cohort of nickel smelting workers in South Wales,
with information on exposure, follow-up period, and cause of death, as
in the nickel
data.
This version has follow-up times split according to age groups and is
merged with the mortality rates in ewrates
.
nickel.expand
A data frame with 3724 observations on the following 12 variables:
agr
age class: 10: 10–14, 15: 15–19, ....
ygr
calendar period, 1931: 1931–35, 1936: 1936–40, ... .
id
subject identifier (numeric).
icd
ICD cause of death if dead, 0 otherwise (numeric).
exposure
exposure index for workplace (numeric).
dob
date of birth (numeric).
age1st
age at first exposure (numeric).
agein
age at start of follow-up (numeric).
ageout
age at end of follow-up (numeric).
lung
lung cancer mortality rate per 1 million person-years.
nasal
nasal cancer mortality rate per 1 million person-years.
other
all cause mortality rate per 1 million person-years.
Computed from nickel
and ewrates
data sets.
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