Study Huff-Fox (1977): study US 1970

Public:

Older white middle-class women, USA, 1970

Sample:

Respondents:

N = 212

Non Response:

Assessment:

Multiple methods
Face-to-face interview, questionnaire and medical examinations

Correlate

Authors's label

Number of friends

Our Classification

Operationalization

Number of close friends in the area(0-9)

Observed Relation with Happiness