Study Moller (2007a): study ZA 2002
- Public
 - Adults, general public, South Africa, 2002
 - Sample
 - Respondents
 - N = 26000
 - Non Response
 - Assessment
 - 
        Interview: face-to-face                    
Interviews in language of choice of respondent 
Correlate
- Authors's Label
 - Roof condition
 - Our Classification
 - 
            
 - 
                        
 - Distribution
 - 1: 25% , 2: 13%
 - Operationalization
 - 1: Poor roof condition
2: Very good roof condition 
Observed Relation with Happiness
poor roof 38 13 49
very good roof 65 10 25