Adult Education Survey| Contact |
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| Contact organisation | National Statistical Institute of Bulgaria |
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| Contact organisation unit | Education and Culture Statistics Department |
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| Contact name | Elena Tsankova |
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| Contact person function | State expert |
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| Contact mail address | 2, P. Volov Str.; 1038 Sofia, Bulgaria |
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| Contact email address | ETsankova@nsi.bg |
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| Contact phone number | +359 2 9857 511 |
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| Contact fax number | |
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| Metadata update |
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| Metadata last certified | 25 January 2024 |
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| Metadata last posted | 25 January 2024 |
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| Metadata last update | 25 January 2024 |
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| Statistical presentation |
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| Data description | The Adult Education Survey (AES) covers adults’ participation in education and training (formal - FED, non-formal - NFE and informal learning - INF). The reference period for the participation in education and training is the twelve months prior to the interview. The survey was conducted in all EU member states according to a common methodology which ensures international comparability of the data. Information available from the AES is grouped around the following topics: - Participation in formal education, non-formal education and training and informal learning
- Volume of instruction hours
- Characteristics of the learning activities
- Reasons for participating
- Obstacles to participation
- Access to information on learning possibilities and guidance
- Employer financing and costs of learning
- Self-reported language skills
The AES focuses on people aged: - AES 2007 – 25-64
- AES 2011 – 18-64
- AES 2016 и 2022 – 18-69
For further information see the 2022 AES legislation (http://ec.europa.eu/eurostat/web/education-and-training/legislation) and the 2022 AES implementation manual (http://ec.europa.eu/eurostat/web/education-and-training/methodology). Additional module to the Adult Education Survey: Cultural participation Participation in cultural events refers to going to the cinema, live performances, visiting cultural sites, wherever these events take place and whether these activities are performed by professionals or amateurs. Individuals are also observed by the number of books and newspapers read. Data from the module are published on the NSI’s website, Culture section. |
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| Classification system | - Classification of Learning Activities (CLA, 2016 edition);
- International Standard Classification of Education 1997 (ISCED 1997) - AES 2007 and AES 2011;
- International Standard Classification of Education 2011 (ISCED 2011) - AES 2016 and AES 2022;
- Classification of Occupations 2008 (ISCO 08);
- Classification of economic activities Rev. 2 (NACE Rev. 2).
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| Sector coverage | The survey is conducted on the whole territory of Bulgaria, with data collected for a period of twelve months prior to the interview. |
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| Statistical concepts and definitions | Definitions as well as the list of variables covered are available in the 2022 AES implementation manual (http://ec.europa.eu/eurostat/web/education-and-training/methodology). Additional module to the Adult Education Survey: - Participation in cultural events refers to going to the cinema, live performances, visiting cultural sites, wherever these events take place and whether these activities are performed by professionals or amateurs. Individuals are also observed by the number of books and newspapers read.
- Live-performances could refer to plays, concerts, operas, ballet, dance and show performances. Visits of live sports events are excluded.
- Cultural sites could refer to museums, art galleries, ethnographic complexes, historic or archaeological sites of all kind, monuments, nature reserves and others.
- Reading of books and newspapers: From the number of books read are excluded textbooks, leaflets or magazines. Newspapers also include online editions of newspapers.
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| Statistical unit | Individuals, learning activities. |
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| Statistical population | Individuals living in private households: AES 2007 – aged 25-64 AES 2011 – aged 18-64 AES 2016 and AES 2022 – aged 18-69 |
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| Reference area | The whole territory of the country. |
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| Time coverage | AES 2007 - fieldwork period: 01.11.2007 - 30.12.2007 AES 2011 - fieldwork period: 16.11.2011 - 15.01.2012 AES 2016 - fieldwork period: 15.11.2016 - 20.01.2017 AES 2022 - fieldwork period: 12.12.2022 - 17.03.2023 |
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| Base period | Not applicable. |
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| Unit of measure |
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Number, BGN/EUR. |
| Reference period |
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The reference period for the participation in education and training is the twelve months prior to the interview. Fieldwork periods: AES 2007 - 01.11.2007 - 30.12.2007 AES 2011 - 16.11.2011 - 15.01.2012 AES 2016 - 15.11.2016 - 20.01.2017 AES 2022 - 12.12.2022 - 17.03.2023 |
| Institutional mandate |
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| Legal acts and other agreements | |
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| Data sharing | Not applicable. |
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| Confidentiality |
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| Confidentiality - policy | According to the Law on Statistics (Articles 25 and 26). |
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| Confidentiality - data treatment | According to the Law on Statistics (Articles 25 and 26). |
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| Release policy |
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| Release calendar | Release Calendar presenting the results of the statistical surveys carried out by the National Statistical Institute is published on the NSI’s website. |
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| Release calendar access | https://nsi.bg/en/node/44/ |
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| User access | In accordance to the Rules for Dissemination of Statistical Products and Services - https://www.nsi.bg/en/node/564/. |
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| Frequency of dissemination |
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Every 6 years. |
| Accessibility and clarity |
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| News release | Press releases were published at the NSI’s website: AES 2016: www.nsi.bg/en/node/15477/ AES 2022: www.nsi.bg/en/node/20763/ |
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| Publications | AES 2007: https://nsi.bg/en/node/3385/ |
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| On-line database | Information System INFOSTAT of the National Statistical Institute: https://infostat.nsi.bg/infostat/pages/module.jsf?x_2=168 |
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| Micro-data access | In accordance with the internal (for the NSI) Rules for Provision of Anonymised Individual Data for Scientific and Research Purposes (http://www.nsi.bg/en/node/12152/). |
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| Other | Not available. |
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| Documentation on methodology | Metadata and methodological notes were published on the NSI’s website: http://www.nsi.bg/en/node/4936/ and the 2022 AES implementation manual (http://ec.europa.eu/eurostat/web/education-and-training/methodology). |
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| Quality documentation | The national quality report was published at the NSI’s website: http://www.nsi.bg/en/node/15103/ |
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| Quality management |
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| Quality assurance | A set of quality criteria have been set up according to the regulations. |
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| Quality assessment | The quality report presents basic information on the quality at national level. |
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| Relevance |
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| User needs | Main users: European Commission (DGs, Secretariat General), Council; Ministry of Education and Science, Ministry of Labour and Social Policy, National Agency for Vocational Education and Training; OECD, UN, CEDEFOP. |
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| User satisfaction | Not available. |
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| Completeness | Not available. |
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| Accuracy and reliability |
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| Overall accuracy | The overall accuracy is considered as good. |
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| Sampling error | Sampling errors for 2022 AES key statistics are presented in the quality report. |
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| Non-sampling error | Response rate: AES 2007 - 81.5% AES 2011 - 87.9% AES 2016 - 77.2% AES 2022 - 73.3% |
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| Timeliness and punctuality |
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| Timeliness | The reference period for 2022 AES is the 12 months prior to the interview, with exception for the background variables and language module (the moment of interview). |
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| Punctuality | Project phases - dates | 2022 AES | Start date | End date | | Preparation of the survey | 1.1.2022 | 30.10.2022 | | Fieldwork | 12.12.2022 | 17.3.2023 | | Processing (quality control, editing etc.) | 3.4.2023 | 22.9.2023 | | Transmission of dataset to Eurostat | 29.9.2023 | 2.10.2023 |
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| Coherence and comparability |
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| Comparability - geographical | Full comparability with all EU member states. |
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| Comparability - over time | Partial comparability between the different waves of the survey due to differences in the overall methodology. 2011 AES collected INF differently and is therefore not comparable with the other waves. |
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| Coherence - cross domain | | Population according to 2022 AES (thousand) | ISCED 0-2 | ISCED 3-4 | ISCED 5-8 | ISCED total | | 2022 AES | Age 18-24, total sex | 59.9 | 293.4 | 34.2 | 387.5 | | Age 18-24, women | 24.7 | 147.6 | 16.2 | 188.5 | | Age 18-24, men | 35.2 | 145.7 | 18.1 | 199.0 | | Age 25-69, total sex | 611.0 | 2154.5 | 1134.0 | 3899.5 | | Age 25-69, women | 310.9 | 941.5 | 708.7 | 1961.1 | | Age 25-69, men | 300.1 | 1213.0 | 425.3 | 1938.4 | | Age 25-34, total sex | 84.1 | 328.6 | 249.7 | 662.4 | | Age 35-54, total sex | 291.1 | 1040.0 | 552.8 | 1884.0 | | Age 55-69, total sex | 235.7 | 785.9 | 331.4 | 1353.1 |
Population according to EU-LFS (thousand)
Reference period: Q1 2023 | ISCED 0-2 | ISCED 3-4 | ISCED 5-8 | ISCED total | | EU-LFS | Age 18-24, total sex | 76.9 | 287.3 | 21.1 | 385.3 | | Age 18-24, women | 37.5 | 139.0 | 11.1 | 187.6 | | Age 18-24, men | 39.4 | 148.3 | 10.0 | 197.7 | | Age 25-69, total sex | 585.2 | 2164.2 | 1135.3 | 3884.8 | | Age 25-69, women | 285.3 | 985.9 | 685.7 | 1956.9 | | Age 25-69, men | 299.9 | 1178.4 | 449.6 | 1927.9 | | Age 25-34, total sex | 86.3 | 333.2 | 238.8 | 658.3 | | Age 35-54, total sex | 272.6 | 1016.3 | 589.2 | 1878.1 | | Age 55-69, total sex | 226.4 | 814.8 | 307.2 | 1348.4 |
| Difference between 2022 AES and EU-LFS (%) | ISCED 0-2 | ISCED 3-4 | ISCED 5-8 | ISCED total | | (EU-LFS - 2022 AES) / EU-LFS *100 | Age 18-24, total sex | 22.1 | -2.1 | -62.4 | -0.6 | | Age 18-24, women | 34.2 | -6.2 | -45.9 | -0.5 | | Age 18-24, men | 10.7 | 1.7 | -80.7 | -0.7 | | Age 25-69, total sex | -4.4 | 0.4 | 0.1 | -0.4 | | Age 25-69, women | -9.0 | 4.5 | -3.3 | -0.2 | | Age 25-69, men | 0.0 | -2.9 | 5.4 | -0.5 | | Age 25-34, total sex | 2.5 | 1.4 | -4.6 | -0.6 | | Age 35-54, total sex | -6.8 | -2.3 | 6.2 | -0.3 | | Age 55-69, total sex | -4.1 | 3.5 | -7.9 | -0.3 |
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| Coherence - internal | AES results for a given data collection round are based on the same microdata and results are calculated using the same estimation methods, therefore the data are internally coherent. |
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| Cost and burden |
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Staff involved in conducting the survey (AES 2022): 5 experts from the NSI's Education and Culture Statistics Department - responsible for survey organization, implementation of methodology, preparation of the national questionnaire and interviewers manual, sampling, training of regional coordinators, data processing, preparation of EU dataset and quality report, data dissemination; 3 experts from the NSI's Information Systems and Application Software Department - responsible for preparation of the interviewing application; 28 regional coordinators from the Regional Statistical Offices - responsible for organization of the fieldwork, training of the interviewers and supervision of the fieldwork. |
| Data revision |
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| Data revision - policy | Not applicable. |
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| Data revision - practice | Not applicable. |
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| Statistical processing |
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| Source data | BG: Изследване на образованието и обучението на възрастни EN: Adult Education Survey (AES). Participation in the survey was voluntary. |
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| Frequency of data collection | Every 6 years. |
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| Data collection | AES was a stand-alone survey. Survey type was Face-to-face. Proxy answers are not allowed at all. AES 2007, 2011, 2016 - Paper And Pencil Interview (PAPI). AES 2022 - Computer Assisted Interview (CAPI). Simple random sampling of two NFE activities was performed by the electronic application during the interview. |
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| Data validation | Validation was performed by the National Statistical Institute. Eurostat performed additional tests for quality assurance. |
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| Data compilation | Not applicable. |
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| Adjustment | Not applicable. |
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| Comment |
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