Study Appleton & Song (2008): study CN 2002
- Public
 - Adults, general public, urban areas, China, 2002
 - Survey name
 - CN-CHIP 2002
 - Sample
 - Respondents
 - N = 6977
 - Non Response
 - Assessment
 - Interview: face-to-face
 
Correlate
- Authors's Label
 - Age
 - Our Classification
 - 
            
 - 
                        
 - Distribution
 - M=45.6
 - Operationalization
 - a: Age in years
b: Age squared 
Observed Relation with Happiness
OPRC's controlled for:
- Fall in household income
- Household income
- Unemployed
- Gender
- Marital status
- Sociability
- Dependent relatives
- Belief in religious tolerance
- Health
- Medical insurance
- Political factors
- Occupation type
- Hukou location
- Province