cohorts {aod} | R Documentation |
Number of prostate cancer deaths and midperiod population for nonwhites in the USA by age and period. The cohort index k is related to age and period indices (i and j, respectively) by k = j + I - i, where I = max(i) (Holford, 1983, Table 2).
data(cohorts)
A data frame with 49 observations on the following 4 variables.
1935-
, 1940-
, ..., 1965-
.50-
, 55-
, ..., 80-
.Holford, T.R., 1983. The estimation of age, period and cohort effects for vital rates. Biometrics 39, 311-324.