Study Ventegodt (1997): study DK 1993

Public:

31-33 aged, born at the university hospital, Denmark, 1993

Sample:

Respondents:

N = 4626

Non Response:

36%

Assessment:

Questionnaire: paper
Data were taken from the medical files of mothers and their babies

Correlate

Authors's label

Iron treatment in first half year of life

Our Classification

Operationalization

Iron treatment in  first half year of life as reported in medical file
1: first year, less than 1 month
2: first year, 1 - 2 months.
3: first half year, over 2 months
iron treatment in the child's second half year

Observed Relation with Happiness