Correlational finding on Happiness and subject: Current functional health

StudyWu et al. (2014): study TW 2009
TitleOn the Predictive Effect of Multidimensional Importance-Weighted Quality of Life Scores on Overall Subjective Well-Being.
SourceSocial Indicators Research, 2014, 115, 933 - 943
DOIDOI: 10.1007/s11205-013-0242-x
PublicStudents, Taiwan, 200?
SampleNon-probability chunk sample
Respondents N =146

Author's labelMedication
Page in Source 937.939
Our classificationCurrent functional health
Selfreport on single question: 
How much do you need any medical treatment to function 
in your daily life?
1 An extrreme amount
2 Very much
3 A moderate amount 
4 A little
5 Not at all
Observed distributionMean: 3.52: SD=.84
Full questions not reported in this paper. 
Question on medication taken from WHOQOL-Bref. 
Question on importance figured in the full 
WHOQOL questionnaire.

Observed Relation with Happiness
O-QOL-c-sq-v-5-br=+.06 ns
raw score
O-QOL-c-sq-v-5-br=+.04 ns
score weighted by perceived importance

Appendix 1: Happiness measures used
CodeFull Text
O-QOL-c-sq-v-5-bSelfreport on single question:

How do you feel about your life just now?
5 excellent
4 good
3 neither good nor bad
2 bad
1 very bad

Appendix 2: Statistics used
rPRODUCT-MOMENT CORRELATION COEFFICIENT (Also "Pearson's correlation coefficient' or simply 'correlation coefficient')
Type: test statistic.
Measurement level: Correlate: metric, Happiness: metric
Range: [-1; +1]

r = 0 no correlation ,
r = 1 perfect correlation, where high correlate values correspond with high happiness values, and
r = -1 perfect correlation, where high correlate values correspond with low happiness values.
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.