Additionally to the main study sample (see cervical),
validation data are available that give information on how likely physicians
from different countries are to identify and correctly report a true cervical
cancer death. In that study, a sample of physicians in each country completed
a death certificate for one specific patient who had died of cervical cancer
and the number of correct death certificates in each country was recorded.
Validation data are therefore available on country level but provide no
information on the reporting probability specific for age.
data(cervical_validation)A data frame with 4 rows and 6 variables:
vnumber of correct death certificates in each country in the validation sample
msize of validation sample in each country
countryfactor variable of European countries
W.1, W.2, W.3predictor variables for country effects using dummy coding (i.e. England, France, Italy)