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Correlational findings

Study Feller et al. (2013): study DE 1994

Public
35-65 aged, general population, Germany, followed 4 years1994-2008
Survey name
EU-EPIC (Europ. Prospective Investigation into Cancer and Nutrition) 1994-1998
Sample
Respondents
N = 48976
Non Response
Assessment
Interview: face-to-face
Baseline instruments to collect several aspects on diet and life-style included self-administered questionnaires, PC-guided interviews and physical examinations

Correlate

Authors's Label
Consumption of whole grain bread (g/day)
Our Classification
Operationalization
Whole grain bread consumption  p.p. in grams/day based on selfreport of diet

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks O-SLW-g-sq-v-4-b D% = + T1 happiness by T1 whole grain bread consumption

                   g/day   SD
Very satisfied      48     55      
Rather satisfied    46     55
Unsatisfied         44     57