Adult Education Survey - Participation of population aged 25 - 64 in cultural activities and events
National Statistical Institute
|Contact organisation unit|
"Education and Culture Statistics" Department
|Contact person function|
Head of department
|Contact mail address|
2, P. Volov Str.; 1038 Sofia, Bulgaria
|Contact email address|
|Contact phone number|
+359 2 9857 469
|Contact fax number|
Adult Education Survey (individuals 25-64 years old) was conducted in all EU member states according to common methodology which ensured international comparable data. Main subject of the survey is participation in different types of learning activities.
· International Standard Classification of Education, 1997 (ISCED 1997) for AES 2007 and AES 2011;
· International Standard Classification of Education, 2011 (ISCED 2011) for AES 2016;
· Classification of the fields of education and training (COO-2008) for AES 2007 and AES 2011;
Classification of the fields of education and training (COO-2015) for AES 2016;
· National Classification of Occupations and Duties
· Classification of Economic Activities (CEA-2008, for international use NACE.BG 2008).
Sample survey covering individuals aged 25-64, permanent residents in Bulgaria.
|Statistical concepts and definitions|
Participation in cultural events: cinema visits, live-performances (without distinction for professional or amateur performances), cultural sites.
Live-performances: plays, concerts, operas, ballet, dance and show performances. Visits of the sport events are excluded.
Cultural sites: museums, art galleries, ethnographic complexes archeological sites, historical landmarks, monuments, nature preserves and etc.
The reference population is defined as people living in private households. The target population is restricted to people aged 25 to 64.
2007, 2011, 2016
Individuals aged 25-64 in private households selected in the sample.
|Frequency of data collection|
Every 5 years.
Face-to-face interviews (PAPI).
Data validation is done by the National Statistical Institute and quality tests are carried out by the Eurostat.
A set of quality criteria have been set up within the Commission Regulation No 1175/2014.
The national quality report provides users with basic information on quality at national level.
The data has been used by Ministry of Culture, municipality administrations and non-profit organizations.
|Data completeness - rate|
|Accuracy and reliability|
Two-stage stratified random sample.
All calculations of the standard errors were performed by SPSS software, Complex Sample Analysis Module.
|Sampling errors - indicators|
|Participation rate in non-formal education||AES 2007||AES 2011||AES 2016|
|Standard error ||95% confidence interval||Standard error||95% confidence interval||Standard error ||95% confidence interval|
|Persons 25-34 years old||1.95||(37.35;45.02)||1.42||(23.03;28.62)||1.80||(20.09;27.16)|
|Persons 35-49 years old||1.38||(37.70;43.11)||1.29||(26.57;31.64)||1.33||(24.0;29.23)|
|Persons 50-64 years old||1.07||(24.23;28.45)||1.03||(17.32;21.36)||1.09||(15.27;19.55)|
|Persons 35-54 years old||1.18||(36.94;41.56)||1.17||(26.27;30.85)||1.14||(23.45;27.45)|
|Persons 55-64 years old||1.18||(17.97;22.61)||1.00||(13.06;17.00)||1.07||(12.54;14.67)|
|Participation rate in non-formal education and training, age 25-64, low educational attainment (ISCED 0-2) - %||1.22||(12.57;17.37)||1.15||(9.62;14.15)||1.17||(14.09;17.95)|
|Participation rate in non-formal education and training, age 25-64, medium educational attainment (ISCED 3-4) - %||1.24||(35.75;40.61)||1.05||(21.30;5.43)||1.04||(52.63;56.88)|
|Participation rate in non-formal education and training, age 25-64, high educational attainment (ISCED 5-8) - %||1.88||(46.30;53.66)||1.70||(33.91;40.60)||1.70||(27.46;30.89)|
For survey 2007 response rate is 81.5%.
For survey 2016 response rate is 87.9%.
For survey 2016 response rate is 77.2%.
The sampling frame is based on the 2011 Population Census System. Shortcomings:
- Although the population frame was updated with demographic events (births and deaths), the migration processes could not be tracked and recorded;
- Time lag between frame update and the moment of the interview.
|Over-coverage - rate|
AES 2007 13.1% - households.
AES 2011 6.3% - households.
AES 2016 - 11.0% - households.
|Common units - proportion|
AES 2007: 86.9% households.
AES 2011: 93.6% households.
AES 2016: 89.0% households.
Survei vehicle: stand alone
Survey type: Face-to-face interview (PAPI)
Proxy answers not allowed.
Full pilot testing for AES 2007, partial pilot testing for AES 2011 and AES 2016.
|Non response error|
Unit non-response AES 2007: 642 households.
Unit non-response AES 2011: 436 households.
Unit non-response AES 2016: 987 households.
|Unit non-response - rate|
| ||AES 2007||AES 2011||AES 2016|
|Non response rate (%)||18.52||12.11||22.76|
|Inability to respond (%)||-||-||0.18|
|Rejected interviews (%)||-||-||0.02|
|Other reasons (%)||0.06||0.78||0.14|
|Item non-response - rate|
AES 2007: - no response rate under 90%.
AES 2011: FEDPAYVAL (10.98%) and NFEPAIDVAL1 (15.26%)
AES 2016: NFEPAIDVAL2 (15.8%) and NFEPAUDVAL1 (11.7%).
The coding, initial data checking and data entry were carried out at the Regional Statistical Offices (RSO). In predominant number of RSO (smaller ones), the interviewers conducted coding and data entry by themselves under supervision of the responsible expert. In other RSO there were detached experts for coding and/or data entry. The RSO were free to choose the most beneficial way of doing required work. The data tools framework (programme for data entry) was designed with additional controls and filters. There were added also extra checking rules by comparing the entered information between different related questions in order to confront possible inconsistent answers. During the data entry experts from RSOs, who met difficulties or problems contacted experts in Head Office for solutions. Some general decisions or emerged special features were spread to all RSOs as extensions of the methodology. After finishing the work at regional level, the data was checked and validated again in the Head Office. Some mistakes emerged mainly at coding, and were corrected at the database. Additional verifications were made at record level.
|Imputation - rate|
|Model assumption error|
Not applicable (annual data).
|Data revision - policy|
In accordance to the Rules for Dissemination of Statistical Products and Services.
|Data revision - practice|
In accordance to the Rules for Dissemination of Statistical Products and Services.
|Data revision - average size|
Not applicable (preliminary data not published).
|Timeliness and punctuality|
|Year||Fieldwork||Data processing||Data delivery to Eurostat|
|2016||11/2016-01/2017||03/2017 - 07/2017||08/2017|
|Time lag - first results|
|Time lag - final results|
Not applicable (only final results published).
All deliverables were sent in time.
|Punctuality - delivery and publication|
Not applicable (data published on exact date).
|Coherence and comparability|
|Comparability - geographical|
Fully comparable with all EU member states.
|Asymmetry for mirror flows statistics - coefficient|
Not applicable (no flows).
|Comparability - over time|
Fully comparable for both reference periods.
|Length of comparable time series|
|Coherence - cross domain|
Results are directly comparable with similar surveys.
|Coherence - sub annual and annual statistics|
Not applicable (annual survey).
|Coherence - National Accounts|
|Coherence - internal|
Carried out quality tests, mainly on the coherency of the gathered information.
|Accessibility and clarity|
Press release in the internet site.
Data on participation of population aged 25 - 64 in cultural activities and events are available to all users of the NSI website under the heading Culture: http://www.nsi.bg/en/node/4669
|Data tables - consultations|
In accordance to the Rules on Provision of the Anonymised Individual Data for Scientific and Research purposes.
Information services by order in accordance to the Rules for Dissemination of Statistical Products and Services.
|Metadata - consultations|
|Documentation on methodology|
Methodological documents of Eurostat.
|Metadata completeness – rate|
Quality report in accordance to the Commission Regulation No № 823/2010.
Quality report in accordance to the Commission Regulation No № 1175/2014.
|Cost and burden|
Staff involved in administering survey:
4 experts from Department "Education and Culture Statistics" - for survey organization, implementation of methology, preparation of the national questionnarie and interviewrs manual, sampling, training of regional coordinators, data procesing, preparation of EU datase and quality report, data dissemination.
1 expert from Department "Information System and Application Software" - responsible for preparation of the data entry tool;
28 regional coordinators from Regional Statistical offices - responsible for organization of the fieldwork, training of interwiwers and supervision of the filedwork, post-coding and initial data entry.
The average time for answering the questionnaire: 23.4 minutes
|Confidentiality - policy|
· Law on Statistics;
· Regulation (EC) No 223/2009 on European statistics (recital 24 and Article 20(4)) of 11 March 2009 (OJ L 87, p. 164), stipulates the need to establish common principles and guidelines ensuring the confidentiality of data used for the production of European statistics and the access to those confidential data with due account for technical developments and the requirements of users in a democratic society.
|Confidentiality – data treatment|
In compliance to the Law on Statistics (Articles 25 and 26).