polio {astsa}R Documentation

Poliomyelitis cases in US


Monthly time series of poliomyelitis cases reported to the U.S. Centers for Disease Control for the years 1970 to 1983, 168 observations.


The format is: Time-Series [1:168] from 1970 to 1984: 0 1 0 0 1 3 9 2 3 5 ...


The data were originally modelled by Zeger (1988) “A Regression Model for Time Series of Counts,” Biometrika, 75, 822-835.


Data taken from the gamlss.data package; see https://www.gamlss.com/.


You can find demonstrations of astsa capabilities at FUN WITH ASTSA.

The most recent version of the package can be found at https://github.com/nickpoison/astsa/.

In addition, the News and ChangeLog files are at https://github.com/nickpoison/astsa/blob/master/NEWS.md.

The webpages for the texts are https://www.stat.pitt.edu/stoffer/tsa4/ and https://www.stat.pitt.edu/stoffer/tsda/.


tsplot(polio, type='s')

[Package astsa version 1.14 Index]