Study Lengyel et al. (2009): study CA 2000

Public

80+ aged World War II veterans, Canada 2000

Sample

Respondents

N = 1630

Non Response

1345

Assessment

Questionnaire: Paper & Pencil Interview (PAPI)
The survey was mailed in May 2000, and again in July 2000, to all living members of Manitoba Follow-Up study.

Correlate

Authors's Label

Consumption of milk products

Our Classification

Remarks

Milk products include: milk and alternatives (soy fortified products, rice, grain beverages), and cheese/dairy products.

Operationalization

Selfreport on question: How often do you NOW eat...milk products
1 not at all
2 rarely
3 most days
4 every day
5 every meal

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

Observed Relation with Happiness