Correlational finding on Happiness and subject: Change in health-behavior

StudyPettay (2008a): study US 2006
TitleHealth Behaviors and Life Satisfaction in college Students.
SourcePhD Thesis, Kansas State University, 2008, USA
PublicUniversity students, Illinois, USA, 2007
SampleSampling not reported
Non-Response
Respondents N =796

Correlate
Author's labelStage of change in physical activity frequancy
Page in Source 57
Our classificationChange in health-behavior
Operationalization
Self reports on questions about physical activity (full 
text not reported)
1: precontemplation
2: contemplation
3; preparation
4: action
5: maitenance
Observed distribution1: 4%, 2: 24%, 3: 20%, 4: 19%, 5: 33%
Remarks
Combination of the following questions
A: I currently exercise (yes/no)
B: I intend to excersice in the next 6 months (yes/no)
C: I currently excersise regularly (yes/no)
D: I have excercised regularly for the past 6 months 
(yes/no)
1 = A no + B no
2 = A no + B yes
3 = A no + C no
4 =  A yes + C yes + D no
5 = A yes + C yes +, E yes

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-Sum-u-mq-v-5-bcMW=+ ns
2 (vs 1)
O-Sum-u-mq-v-5-bcMW=+ ns
3 (vs 2)
O-Sum-u-mq-v-5-bcMW=+ ns
4 (vs 3)
O-Sum-u-mq-v-5-bcMW=+ p < .001
5 (vs 4)
O-Sum-u-mq-v-5-bcMW=+ p < .001
5 (vs 1-4)

similar for males and females


Appendix 1: Happiness measures used
CodeFull Text
O-Sum-u-mq-v-5-bcSelfreport on 3 questions:

Using the 1-5 scale below, indicate your agreement with each of the items by placing the appropriate number on the line preceding that item. Please be open and honest in your responding.
A In most ways my life is close to ideal
B The conditions of my life are excellent
C I am satisfied with my life

Answers rated:
5 strongly agree
4 slightly agree
3 neither agree nor disagree
2 slightly disagree
1 strongly disagree

Computation:( A+B+C)/3

Name: Shortened Diener's Satisfaction with Life Scale (SWLS)


Appendix 2: Statistics used
SymbolExplanation
MWWILCOXON (MANN-WHITNEY) TWO SAMPLE TEST
Type: statistical procedure.
Measurement level: Correlate: dichotomous, Happiness: ordinal
Symbol test statistic: W (Wilcoxon) or U (Mann-Whitney).
Relationship: W = U + n1(n1 + 1), where n1 and n2 = Ne - n1 , while n1 <= n2, are the sizes of the two samples.
Range U [ 0; n1n2 ] and W [ n1(n1 + 1); n1(n1+ 2n2 +1].

Meaning:
At the limit values of U and W there is the strongest possible association.
U = n1n2 <-> W = n1(Ne + 1) no association.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl