| Number | Concept | Description |
|---|---|---|
| 1 | Data description | Economically active population of the cities and areas object of observation consists of employed and unemployed persons aged 15 and over. The definitions used are in accordance with the Urban Audit project methodological requirements. Data is based on the Labour Force survey results. Due to the small LFS sample size at lower territorial levels data for the Urban Audit purposes is estimated. |
| 2 | Classification used | Unified Classification of Administrative-Territorial and Territorial Units (UCATTU) |
| 3 | Coverage | Persons aged 15 and over in private households. Estimates of data for the Urban Audit purposes are based on LFS data aggregated for the respective cities and areas. Additional recalculations of the weights are done for the units belonging to the respective cities and areas through adjusting data with the demographic data for the previous year by age and sex. Data is rounded to the nearest hundred. |
| 4 | Unit of measure | Number |
| 5 | Reference period | Year |
| 6 | Time coverage | 2010-2018 |
| 7 | Release policy | Information is published according to the Release Calendar presenting the results of the statistical surveys carried out by the National Statistical Institute. |
| 8 | Dissemination format | • www.nsi.bg |
| 9 | Methodological documents | Methodological Manual on City Statistics. Compilation of variable definitions - Eurostat. |
| 10 | Source data | Data are collected by the NSI. Data source is the Labour Force Survey (LFS). http://www.nsi.bg/bg/node/3990 |
| 11 | Frequency of data collection | Quarterly. Annual results are averages of the 4 quarters of the year. |
| 12 | Data collection method | Paper questionnaire. Persons aged 15 and over living in the surveyed households are interviewed. |
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