Study Welsch (2002a): study ZZ 1991
- Public
- Adults, general public, 54 nations, 1990s
- Sample
- Respondents
- N = 75000
- Non Response
- n.a.
- Assessment
- Interview: face-to-face
Correlate
- Authors's Label
- Air quality
- Our Classification
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-
- Remarks
- Data air quality from Air Information System (World Health Organization)
- Distribution
- M=2.59 SD=0,72 Range=0-4,20 N=122
- Operationalization
- Aggregate indicator of:
- urban SO2 concentration
- urban NO2 concentration
- urban particles (TSP) concentration
Positive values correspond to high levels of air quality.
Observed Relation with Happiness
- Gross National Product per head
- scientific rationality of nations
- product (interaction-term) Air Quality and Gross National Product
- Gross National Product
- Dummy variable OECD country
Air quality contributes more with happiness in OECD countries (compared to non-OECD countries) and in rich countries (compared to poor countries)