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["REFERENCE METADATA FOR THE SEASONAL ADJUSTMENT 2025"]
[]
["SERIES: ","TOTAL EMPLOYMENT, TOTAL UNEMPLOYMENT"]
["Frequency: ","QUARTERLY"]
[]
[]
[null,"TOTAL EMPLOYMENT","TOTAL UNEMPLOYMENT"]
[]
["1.1 Published series"]
["Original series","YES","YES"]
["Series adjusted only for calendar effects ","NO","NO"]
["Seasonally adjusted series: series adjusted for seasonal effects and for calendar effects ","NO","NO"]
["Other: Variation rates of seasonally adjusted series","YES","YES"]
[]
["1.2 Method used","Method based on Reg-ARIMA models","Method based on Reg-ARIMA models"]
[]
["1.3 Software used"]
["Software","Manual analysis: Gretl                                      Automatic calculations: JDemetra+","Manual analysis: Gretl                                      Automatic calculations: JDemetra+"]
["Version","Gretl 1.9.14                                                                           JDemetra+ v2.2.2","Gretl 1.9.14                                                                                         JDemetra+ v2.2.2"]
[]
["1.4 Adjustment for calendar effects"]
["Type of adjustment (direct/indirect)","Direct","Direct"]
["Working days","NO","NO"]
["Mobile public holidays: Easter holidays/Easter working days","NO / NO","NO / NO"]
["Leap year","NO","NO"]
["Others","NO","NO"]
["Used calendar","Calendar published in the Official State Gazette","Calendar published in the Official State Gazette"]
[]
["1.5 Outliers"]
["Type of intervention","Level shifts: Q1-2009,                                Additive outliers: Q2-2011                       Transitory change: Q2-2020","Level shifts: Q4-2008, Q1-2009,                                                      Transitory change: Q3-2020, Q4/2021"]
[]
[]
["2. Adjustment for Seasonal Effects"]
[]
["2.1 Model"]
["Selection (manual/automatic)","Manual","Manual"]
["Model adjusted","ARIMA (1,1,0)x(0,1,1)4","ARIMA (1,1,0)x(0,1,0)4"]
["Mean","NO","NO"]
["Type of decomposition of the seasonal adjustment","Log-additive","Additive"]
["Number of roots of the regular AR polynomial in the transitory component","None","None"]
["SMOD","0.5","0.5"]
[]
["2.2 Aggregation"]
["Type of adjustment (direct/indirect)","Direct","Direct"]
[]
[]
["3. Revisions"]
["Type of revision","Partially continuous","Partially continuous"]
["Re-identification of the model, filters, outliers and calendar effect regressors ","Once a year, as of the end of January, when the data from the last quarter of the previous year is available (1)","Once a year, as of the end of January, when the data from the last quarter of the previous year is available (1)"]
["Re-estimation of parameters and re-calculation of components","Quarterly","Quarterly"]
["Horizon for the data review","Complete series","Complete series"]
[]
[]
["4. Quality indicators"]
["Quality measures used to assess the seasonal adjustment","- Graphic analysis of the residuals and their ACF and PACF                                                                       - Q of Ljung-Box and normality contrasts over the residuals carried out with Gretl                                                                                    - Verification of the appropriateness of the modelling by means of TRAMO/SEATS diagnosis elements implemented in JDemetra                                                                                                                                                                                    - Study of the seasonal pattern                                              - Analysis of the periodograms of the seasonally adjusted series and its rates, to check the absence of residual seasonality and calendar effects                                                                                 ","- Graphic analysis of the residuals and their ACF and PACF                                                                       - Q of Ljung-Box and normality contrasts over the residuals carried out with Gretl                                                                                    - Verification of the appropriateness of the modelling by means of TRAMO/SEATS diagnosis elements implemented in JDemetra                                                                                                                                - Study of the seasonal pattern                                              - Analysis of the periodograms of the seasonally adjusted series and its rates, to check the absence of residual seasonality and calendar effects                                                                                 "]
[]
[]
["5. Structural metadata available"]
["Link to the methodological note","http://www.ine.es/en/inebaseDYN/epa30308/docs/epa_meto_tasas_desestacionalizadas_en.pdf","http://www.ine.es/en/inebaseDYN/epa30308/docs/epa_meto_tasas_desestacionalizadas_en.pdf"]
["Availability of detailed information that allows users to replicate the process","YES","YES"]
[]
[]
["(1) Exceptionally, SEATS may automatically change the model in some period due to not finding it to be admissible "]