Correlational finding on Happiness and Current general mental health
Subject code: H13ab

StudyRafanelli et al. (2000): study IT 1995
TitleRating Well-Being and Distress.
SourceStress Medicine, 2000, Vol. 16, 55 - 61
PublicRemitted mental out-patients and controls, Italy, 199?
SampleNon-probability purposive sample
Respondents N =40

Author's labelPatients vs healthy controls
Page in Source 57
Our classificationCurrent general mental health , code H13ab
0: healthy control group, matched for social 
demographic variables
1: remitted mental out-patients
Observed distributionN=0:20; 1:20
Remitted mental out-patients: patients treated in an 
affective Disorder Program who rated 'better' or 'much 
better' after an additional therapy of 3-5 months 
according to Kellner's global scale of improvement

Observed Relation with Happiness
Healthy control group:         M=5,0; SD=1,4
Remitted mental out-patients:  M=2,7; SD=1,9
- difference:                   -2,3
M-FH-cw-mq-v-2-at.=4,31 p < .001

Appendix 1: Happiness measures used
CodeFull Text
M-FH-cw-mq-v-2-aSelfreport on 6 questions

Please describe how you have felt during THE PAST WEEK and make a small check mark. For example, the word nervous is on the first line. If you have felt nervous, check YES, if you have not felt nervous check NO
A Cheerfull
B Happy
C Feeling well
D Contented
E Enjoying yourself
F Looking forward to the future

1 yes
0 no

Name: Contentment subscale in Kellner's Symptom Questionnaire (SQ).
Version: Past Week.

Appendix 2: Statistics used
Type: descriptive statistic only.
Measurement level: Correlate: dichotomous, Happiness: metric
Range: depending on the happiness rating scale of the author; range symmetric about zero.

Meaning: the difference of the mean happiness, as measured on the author's rating scale, between the two correlate levels.
t.t-STATISTIC (Student's t-statistic)
Type: symmetric standard test statistic.
One parameter: n (= number of degrees of freedom (df) ; range df: [1; + infinite)
Range for t: unlimited

Meaning : the test statistic is the ratio of a difference between a statistic and its expected value under the null hypothesis and its (estimated) standard error with n degrees of freedom.
The critical values of its probability distribution are tabulated extensively in almost any textbook on Statistics.
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.