Abstract
The theme of seasonality is not very common in the Czech demographic literature, but it could be very attractive for public as well as scientist readers. This article briefly introduces some methods of analysis of seasonality in demography.
For analysis of seasonal mortality by causes of deaths were used time-series decomposition and method called X-12. Time-series decomposition is supported by main results obtained for three European countries.
Three states have been chosen with respect to different geographic location and demographic development, namely the Czech Republic, Norway and Spain. The Czech Republic dataset has been also used for finding out relation between weather deviation and random component variation.
Seasonal indexes of time-series have been applied for country comparison. Method X-12 was used on Czech data only.
The possibility of usage the SAS software is presented in the final part.