Data source(s) used: Trips and holidays survey: The survey, in accordance with the European Regulation 692/2011 (repealing from 1 January 2012 the European Directive 95/57/EC), satisfies the national needs by collecting regularly data on 'tourism demand' and ensuring, together with supply data, the availability of an integrated system of statistical information in the field of tourism at national level. Moreover, complying with the Regulation, the survey guaranties a set of harmonized statistical information across all member states of the European Union. The aim is to quantify and analyze the flows of tourists resident in Italy, both within the country and abroad, as well as to give information on the characteristics of the trips and on the socio-demographic characteristics of tourists and non-tourists. The reference periods are the all months of the year. In each period, for each household member, information about trips ended in the referring month is collected. Tourism flows are distinguished into trips for personal reasons and business trips, the first ones differentiated between short holiday (1-3 overnight stays) and long holiday trips (4 or more overnight stays). The survey provides a wide set of information on tourist trips, such as destination of the trip, main purpose, type of organization of travel, main type of accommodation and main mean of transport, duration and period of the year for each trips made, etc. From 1997 to 2013, Istat carried out the quarterly survey with CATI tecnique (Computer Assisted Telephone Interview) on a sample of about 14,000 households per year (approximately 3,500 per quarter and 32,000 individuals per year). Since 2014 the survey has been included into another process, Household budget survey, becoming a focus into the initial and ending interview. It is conducted monthly with CAPI technique (Computer Assisted Personal Interview), over a theory sample of 28.000 households (7.000 households per quarter). Comparability of the series of the main data has been guaranteed over time at national level. In fact, the principal macrodata have been re-built by applaying a tecnique of time series re-building.
Other data characteristics: The time comparison between the estimates published since 2014 and the estimates published previously is feasible using only the data in the cube "Trips and overnight stays – Statistical back recalculation 1997-2013". In fact, the transition to the new Trips and Holidays Survey, integrated into the new Household and Budget Survey, has entailed a major innovation of the entire production process. In particular, changes were made in the data-collection technique (from telephone interviews to face-to-face interviews aided by a personal computer), in the reference period of the questions on trips and same-day visits (month instead of quarter) and in the sample size. In addition, methodological improvements included the representation of the population by the sample extract (the extraction of the sample households is from the municipal registry lists instead of the lists of subscribers to fixed telephony, as did the previous survey). An inevitable consequence of these changes was the interruption in the continuity of the time series of the main aggregates relating to trips and overnight stays. However, the old and the new survey were carried on simultaneously from the third quarter of 2012 and throughout 2013. So, it was possible to carry out the recalculation of the main series, through the study of the relationship between the data of the two surveys and the application of reconstruction techniques of time series already consolidated in our Institute. The reconstruction also includes the recalculation due to the availability of the new data on population, following the results of the Census of 2011 (which led to a revision of the estimates registries).