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Correlational findings

Study Hajak (2001): study DE 1997

Public:
18+ aged, general public, Germany, 1997
Sample:
Respondents:
N = 1913
Non Response:
Assessment:
Interview: face-to-face
interview at subjects home and additional questionnaire

Correlate

Authors's label
Severe Insomnia
Our Classification
Operationalization
Self report
0: no sleep complaints
1: severe insomnia

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks O-SQL-c-sq-v-5-b DM = - p < .00000 no complaints    M =  3,82  CI95[ 3,70; 3,94]
severe insomania M =  3,05  CI95[ 2,94; 3,16]
difference      DM = -0,77  CI95[-0.93; -0,61]
                            P2=4,9E-20