data.Japanese.breast.cancer {apc} | R Documentation |
Function that organises Japanese breast data in apc.data.list
format.
The data set is taken from table I of Clayton and Schifflers (1987b), which contains age-specific mortality rates (per 100,000 person-years observation) of breast cancer in Japan, during the period 1955-1979. Reported in 5 year age groups and 5 year period groups. Numbers of cases on which rates are based are also available. The original source was WHO mortality data base.
The data set is in "AP"-format.
data.Japanese.breast.cancer()
The value is a list in apc.data.list
format.
rates |
matrix of mortality rates. This is not needed for the |
response |
matrix of cases |
dose |
matrix of cases/rates |
data.format |
logical equal to "AP". Data organised with age-groups in rows and period-groups in columns. |
age1 |
numeric equal to 25. This is the label for the first age group covering ages 25-29. |
per1 |
numeric equal to 1955. This is the label for the first period group covering period 1955-1959. |
coh1 |
NULL. Not needed when data.format="AP" |
unit |
numeric equal to 5. This is the width of the age and period groups. |
per.zero |
NULL. Not needed when data.format="AP" |
per.max |
NULL. Not needed when data.format="AP" |
time.adjust |
0. Thus age=25 in period=1955 corresponds to cohort=1955-25+0=1930, and indeed the centers of the age and period groups, that is age=27 and period=1957 translate into cohort=1957-27+0=1930. |
label |
character. "Japanese breast cancer". |
Bent Nielsen <bent.nielsen@nuffield.ox.ac.uk> 8 Sep 2015 (24 Oct 2013)
Table I of Clayton and Schifflers (1987b)
Clayton, D. and Schifflers, E. (1987b) Models for temperoral variation in cancer rates. II: age-period-cohort models. Statistics in Medicine 6, 469-481.
General description of apc.data.list
format.
######################### ## It is convient to construct a data variable data <- data.Japanese.breast.cancer() ## To see the content of the data data