Description Components Note for S-plus Author(s) References See Also
nordpred
uses the power5 and poisson Age-Period-Cohort (APC) models to
calculate prediction of cancer incidence and mortality
This class of objects is returned by the nordpred.estimate class of functions
to represent a fit of power5 and poisson Age-Period-Cohort models for
prediction of cancer incidence.
Objects of this class have methods print.nordpred
,
summary.nordpred
and plot.nordpred
.
A data.frame
with forecasted number of cases
A data.frame
with observed and forecasted person years
Numer of period predicted
Number of periods used in estimate
P-value for goodness of fit
Indicator for project of avarage trend or use the slope
for the last ten years? If recdent = FALSE
, avarage trend for the whole
observation period have been used, and if recent = TRUE
the slope from
the last ten years have been used
P-value for use of recent trend based on a significance test for departure from linear trend
Degree of trend cut in predictions
Youngest age group which uses regression model as basis for predicted rates
Youngest age group which have been included in the regression model. Predictions for age groups below this limit it based on average rates from the last 10 years.
Fitted glm
-object
The object will also contain the following (see lm
):
formula
, terms
, assign
and call
.
Powerlink is made via a special modification in S-PLUS. This works fine for the point estimates, but the variance estimates found via the glm-objects are wrong. For variance estimates, we would rather recommend using R.
Harald Fekjaer and Bjorn Moller (Cancer Registry of Norway)
A website for nordpred is available at: http://www.kreftregisteret.no/software/nordpred/
Background for the methods can be found in: Moller B., Fekjaer H., Hakulinen T., Sigvaldason H, Storm H. H., Talback M. and Haldorsen T 'Prediction of cancer incidence in the Nordic countries: Empirical comparison of different approaches' Statistics in Medicine 2003; 22:2751-2766
An application of the function, using all the default settings, can be found in: Moller B, Fekjaer H, Hakulinen T, Tryggvadottir L, Storm HH, Talback M, Haldorsen T. Prediction of cancer incidence in the Nordic countries up to the year 2020. Eur J Cancer Prev Suppl 2002; 11: S1-S96
Other nordpred: is.nordpred.estimate
,
nordpred.estimate
;
is.nordpred
, nordpred
;
nordpred.estimate.object
;
nordpred.getpred
;
nordpred.prediction
;
plot.nordpred
;
print.nordpred.estimate
;
print.nordpred
;
summary.nordpred
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