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 & Pencil Interview (PAPI)
Data were taken from the medical files of mothers and their babies

Correlate

Authors's Label

Age of first head lifting

Our Classification

Distribution

N all:3105,   1:24,2%,   2:37,2%,   3:18,5%,   4:12,2%,   5:7,0%,   6:1,0%

Operationalization

Age of head lifting when lying on the stomach as reported in medical file
1: 1-2 weeks
2: 3-4 weeks
3: 5-6 weeks
4: 7-8 weeks
5: 3-4 months
6: 5-6 months

Observed Relation with Happiness