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Correlational findings

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
Headache vs no headache
Our Classification
Operationalization
1:  headache
1a: migraine headache
1b: no migraine headache
0:  controls

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks O-SLW-cw-sq-ol-11-a = Means over all five measurements O-SLW-cw-sq-ol-11-a DM = -                           M        SD      DM

1:  headache                -       -        -
1a: migraine              7,52    2,56     0,99
1b: no migraine headache  7,18    2,65     1,33
0:  Control group         8,51    1,67
O-SLW-cw-sq-ol-11-a = .10 p < .000 1 vs 0