Correlational finding on Happiness and Earlier use of stimulants
Subject code: S13aa01

StudyFeller et al. (2013): study DE 1994
TitleLife Satisfaction and Risk of Chronic Diseases in the European Prospective Investigation into Cancer and Nutrition {EPIC)-Germany.
SourcePLoS ONE 8(8): e73462
URLhttp://journals.plos.org/plosone/article?id=10.1371/journal.pone.0073462
DOIdoi:10.1371/joumal.pone.0073462
Public35-65 aged, general population, Germany, followed 4 years1994-2008
SampleProbability multistage stratified area sample
Non-Response
Respondents N =48976

Correlate
Author's labelSmoking
Page in Source 4
Our classificationEarlier use of stimulants, code S13aa01
Operationalization
0 non-smoker
1 former smoker
2 current smoker

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-SLW-g-sq-v-4-bDMt=-
T1 happiness by T1 smoking
                                          
               Very    Rather  
               Satisf. Satisf. Dissatisf. Mt
Non-smoker      32%     59%      9%       7,25 
Former smoker   32%     59%      9%       7,25
Smoker          30%     58%     12%       7,08
O-SLW-g-sq-v-4-bG=-.09 p < .001


Appendix 1: Happiness measures used
CodeFull Text
O-SLW-g-sq-v-4-bSelfreport on single question:

Please tell me how satisfied you are with your life overall. Would you say that you are..
4 very satisfied
3 mostly satisfied
2 mostly dissatisfied
1 very dissatisfied
- don't know


Appendix 2: Statistics used
SymbolExplanation
DMtDIFFERENCE of MEANS AFTER TRANSFORMATION
Type: descriptive statistic only.
Measurement level: Correlate: dichotomous, Happiness: metric
Theoretical range: [-10; +10]

Meaning: the difference of the mean happiness (happiness measured at a 0-10 rating scale) between the two correlate levels.
GGOODMAN & Kruskal's GAMMA
Type: test statistic
Measurement level: Correlate: ordinal, Happinessl: ordinal
Range: [-1; +1]

Meaning:
G = 0 no rank correlation
G = +1 strongest possible rank correlation, where high correlate values correspond to high happiness ratings.
G = -1 strongest possible rank correlation, where high correlate values correspond with low happiness ratings.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl