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The data consist of monthly counts of poliomyelitis cases in the USA from the year 1970 to 1983.
data(Yt)
A data frame with 168 observations on the following 8 variables.
The covariates are the deterministic trend centered at 73 and divided by 1000, annual and semiannual cosine and annual and semiannual sine.
Zeger, S.L. (1988). A regression model for time series of counts. Biometrika 75, 621-29.
# NOT RUN { data(Yt) # }
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