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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 & Pencil Interview (PAPI)

Correlate

Authors's Label
Headache vs no headache
Our Classification
Remarks
Headache or migraine subgroup: a. headache symptoms which were present and diagnosed by a physician as 'migraine'or which were considered by the subjects to resemble the symptoms in the migraine description b. if the headache frequency was at least twice a month c. if the headaches had been present for at least one year
Distribution
1:N=58; 1a:N=20; 1b:N=38; 0:N=95
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