In August 2007, an international study EUROČARE-4 published for the čzech Republic decreased probability of 5-year survival in comparison with average value of the other involved European countries. These findings were refused as strongly biased by leaders of the čzech Oncology Society. The bias however cannot be attributed to the EUROČARE study itself, it was due to erroneous and not representative export of the čzech data. Data of the čzech NČR can guarantee representative monitoring of mortality with 100% population coverage. Instead of it, the EUROČARE-4 study obtained only partial export of regionally based data with only 8% coverage. The situation inevitably resulted in strongly biased outcome that cannot be generalized for the whole population. Here we present audit of more than 1.3 million of records accessible in the NČR since 1977. Based on reference period 1995 - 2003, we estimated 5-year relative survival in the way that methodically corresponds to the EUROČARE-4 study. The results clearly document that survival outcomes reached by current čzech oncology are comparable to those reported in the EUROČARE-4 study.

        Key words: population cancer registry, overall survival, reference benchmarking of survival