Correlational finding on Happiness and Later physical health
Subject code: H14aa03

StudyPalmore (1981): study US 1968
TitleSocial Patterns in Normal Aging: Findings From the Duke Longitudinal Study.
SourceDuke University Press, 1981, Durham, USA
Public46+ aged whites, North Carolina, USA, followed from 1968 to 1976.
SampleProbability stratified sample
Respondents N =375

Author's labellater performance status (Physical function)
Page in Source 106
Our classificationLater physical health, code H14aa03
Rating by physician based on his examination, the 
medical history and the results of laboratory tests.
The ratings had a theoretical range of 1 for 
"moribund": fatal processes progressing rapidly" to 10 
for "normal": no complaints; no evidence of disease.
Assessed at T2.

Observed Relation with Happiness
Men. T2 performance status by T1 life 
C-BW-c-sq-l-10-car=+.18 p < .05
Women. T2 performance status by T1 life 

Appendix 1: Happiness measures used
CodeFull Text
C-BW-c-sq-l-10-caSelfreport on single question:

Here is a picture of a ladder. Suppose we say that the top of the ladder (9) represents the best possible life for you and the bottom (0) represents the worst possible life for you. Where on the ladder do you feel personally stand at the present time?
[ 9 ] best possible life for you
[ 8 ]
[ 7 ]
[ 6 ]
[ 5 ]
[ 4 ]
[ 3 ]
[ 2 ]
[ 1 ]
[ 0 ] worst possible life for you

Name: Cantril's self anchoring ladder rating of life (adapted version)

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.