Study Bartram (2013b): study ZZ Europe 2002
- Public
 - 15+ aged general public, Europe, 2002-2011
 - Survey name
 - EU-ESS 1-5: 2002-2012
 - Sample
 - Respondents
 - N = 56395
 - Non Response
 - Assessment
 - Interview: face-to-face
 
Correlate
- Authors's Label
 - Education
 - Our Classification
 - 
            
 - 
                        
 - Distribution
 - 1: 12%, 2: 19%, 3: 37%, 4: 3%, 5: 28%
 - Operationalization
 - Self report on single question:
What is the highest level of education you have achieved?
1) Primary only
2) Lower Secondary
3) Upper Secondary
4) Vocational
5) Tertiary 
Observed Relation with Happiness
B controlled for:
- Income
- Age
- Age^2/100
- Gender
- Religiosity
- Partner
- Unemployed
- Retired
- Friends
- Health
- Immigrant status
- Survey round