Study Langeveld (1998): study NL 1993
- Public:
- 12-18 aged migraine patients and controls, followed 26 months, The Netherlands, 199?
- Sample:
- Respondents:
- N = 159
- Non Response:
- at T0: 4%
- Assessment:
- Questionnaire: paper
Correlate
- Authors's label
- Quality of Life at different times - interrate correlations
- Our Classification
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- Operationalization
- Parent's rating of child's happiness