Study Lepper (1998): study US California 1993

Public:

Retirees, Southern California, USA, followed 9 months199?

Sample:

Respondents:

N = 971

Non Response:

Assessment:

Questionnaire: paper
Mailed questionnaire

Correlate

Authors's label

Smoking habits

Our Classification

Operationalization

Self report on whether or not the subjects smokes cigarettes
0=no
1=yes

Observed Relation with Happiness