The index measures the monthly evolution of the volume of industrial production (excluding construction). With effect from January 2018 the indices are calculated with reference to the base year 2015 using the Ateco 2007 classification (Italian edition of Nace Rev. 2).
In April 2020 the seasonally adjusted industrial production index decreased by 19.1% compared with the previous month. The change of the average of the last three months with respect to the previous three months was -23.2%.
The calendar adjusted industrial production index decreased by 42.5% compared with April 2019 (calendar working days being 21 versus 20 days in April 2019).
The unadjusted industrial production index decreased by 40.7% compared with April 2019.
The pandemic emergency impacted on the data collection of the survey and a moderate loss in the responses rate was registered. Strategies implemented to deal with the missing responses allowed to calculate and release accurate indices for April 2020 (for further details see Methodological note, page 9).