[Risk of deaths from cardiovascular diseases in Polish urban population associated with changes in maximal daily temperature]. 
The paper presents results of analysis of short-term effect of changes in maximal daily temperature on daily mortality from cardiovascular diseases in warm season in years 1999-2006.  Analysis was carried out in six large Polish cities--Katowice, Kraków, Łódź, Poznań, Warszawa and Wrocław.  Generalized additive models were used in the analysis.  Potential confounding factors--long term changes of mortality, day of week and other meteorological factors (atmospheric pressure, humidity, mean wind speed) were taken into account during model building process.  Analysis was done for two age groups--0-69 and 70 years and older.  Significant, positive association between daily maximal temperature and risk of death from cardiovascular diseases was found only in older age group.