Correlational finding on Happiness and Current income level (unspecified)
Subject code: I01ab

StudyBerger (2013): study DE 1994
TitleHappy Working Mothers? Investigating the Effect of Maternal Employment on Life Satisfaction.
SourceEconomica, 2013, Vol. 80, 23 - 43
URLhttp://onlinelibrary.wiley.com/doi/10.1111/j.1468-0335.2012.00932.x/abstract
DOIdoi:10.1111/j.1468-0335.2012.00932.x
PublicMothers, Germany, followed 15 years, 1994-2009
SampleProbability multi-stage random
Non-Response
Respondents N =5150

Correlate
Author's labelHousehold income
Page in Source table 2 , 2A
Our classificationCurrent income level (unspecified), code I01ab
Operationalization
In income in Euro
A: Total household income
B: Residual income (total minus mother's earnings)
Observed distribution A: M=3118, SD=1620; B; M=2557, SD =1531

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-SLW-c-sq-n-11-db-fix=+.37 p < .01
Total household income
O-SLW-c-sq-n-11-db-fix=+.14 p < .01
Residual income (partners income only)

b's controled for:
- age
- education
- family situation
  - partnered
  - age of children
  - pregnant
  - person needing care in household
- health
  - disabled
  - self rated
- employment 
- region
- municipality size
- year dummies


Appendix 1: Happiness measures used
CodeFull Text
O-SLW-c-sq-n-11-dSelfreport on single question:

Taking all things together, how satisfied are you with your life these days? Please answer with the help of this scale. For instance, when you are totally satisfied with your life, please tick '10'. When you are totally unsatisfied with your life, please tick '0'. You may use all values in between to indicate that you are neither totally satisfied nor totally unsatisfied."
10 totally satisfied
9
8
7
6
5
4
3
2
1
0 totally unsatisfied


Appendix 2: Statistics used
SymbolExplanation
b-fixREGRESSION COEFICIENT in fixed effects analysis
Type: test statistic
WDH symbol: b-fix
Primary correlate level: metric
Secondary correlate level: nonmetric
Happiness level: metric
Theoretical range: unlimited
Meaning:
Variant of usual (non-standardized) regression coefficient (b), which controls for the secondary variables, by focusing on differences from a fixed level, such as the mean in a category. Aims to reduce the residual variance and to improve the precision of the regression coefficient.

References:
Wikipedia: http://en.wikipedia.org/wiki/Fixed_effects_model
Non-technical text: http://www.jblumenstock.com/files/courses/econ174/FEModels.pdf
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl