Correlational finding on Happiness and What one eats
Subject code: N15ab04

StudyLengyel et al. (2009): study CA 2000
TitleThe Relationships Between Food Group Consumption, Self-Rated Health, and Life Satisfaction of Community-Dwelling Canadian Older Men: The Manitoba Follow-Up Study
SourceJournal of Nutrition for the Elderly, 2009 Vol. 28, 158-173
URLhttps://www.ncbi.nlm.nih.gov/pubmed/21184363
DOIDOI:10.1080/01639360902950182
Public80+ aged World War II veterans, Canada 2000
SampleNon-probability purposive sample
Non-Response1345
Respondents N =1630

Correlate
Author's labelConsumption of vegetables and fruits
Page in Source 168-169
Our classificationWhat one eats, code N15ab04
Operationalization
Selfreport on question: How often do you NOW eat …fruit 
and vegetables
1 not at all 
2 rarely
3 most days
4 every day
5 every meal

Recoded
Daily (4+5)
Mostly (3)
Rarely (1+2)

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-SLW-c-sq-v-5-tOR=1.61 p < .001
Daily (vs mostly) CI95[1,27-2,04]
O-SLW-c-sq-v-5-tOR=3,71 p < .02
Daily  (vs rarely) CI95[1,27-10,8]
O-SLW-c-sq-v-5-tOR=0,13 ns
Mostly  (vs rarely) CI95[078-6,78]

OR's harly affected by control for
- socio-demographic characteristics
  - age
  - ever smoked
  - marital status
  - living arrangement
- health
  - mental health
  - physical health
  - earlier hear disease

OR's slightly lower when controled for consumption 
of other food items
- grains
- meat and alternatives
- milk products


Appendix 1: Happiness measures used
CodeFull Text
O-SLW-c-sq-v-5-tSelfreport on single question:

How would you describe your satisfaction with life in general at present......?
1 bad
2 poor
3 fair
4 good
5 excellent


Appendix 2: Statistics used
SymbolExplanation
ORODDS RATIO
Type: descriptive statistic only.
Measurement level: Correlate: dichotomous, Happiness level: dichotomous
Range: nonnegative unlimited

Meaning:
OR = 1 « no association at all;
OR = 0 or infinite « at least one level of the correlate allows an error-free prediction of the happiness.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl