Correlational finding on Happiness and subject: Participation in church

StudyGurin et al. (1960): study US 1957
TitleAmericans View their Mental Health. A Nationwide Interview Survey.
SourceBasic Books, 1960, New York, USA ( Reprint in 1980, Arno Press, New York, USA)
Public21+ aged, general public, USA,1957
Sample
Non-Response13%; 5% not at home, 8% refusals
Respondents N =2460

Correlate
Author's labelChurch attendance
Page in Source 240
Our classificationParticipation in church
Operationalization
Direct question: never / a few times a year / a few 
times a month / once a week / more than once a week.

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-HL-c-sq-v-3-aaG=+.14 p < .01
Analysis on the basis of the answers of Catholics 
and Protestants only.

Catholics   : G' = +.20 (01)
U-shaped curve: Those who attend church once a 
week are most happy.
Protestants : G' = +.11 (01)


Appendix 1: Happiness measures used
CodeFull Text
O-HL-c-sq-v-3-aaSelfreport on single question:

Taken all together, how would you say things are these days? Would you say that you are....?
3 very happy
2 pretty happy
1 not too happy


Appendix 2: Statistics used
SymbolExplanation
GGOODMAN & Kruskal's GAMMA
Type: test statistic
Measurement level: Correlate: ordinal, Happinessl: ordinal
Range: [-1; +1]

Meaning:
G = 0 no rank correlation
G = +1 strongest possible rank correlation, where high correlate values correspond to high happiness ratings.
G = -1 strongest possible rank correlation, where high correlate values correspond with low happiness ratings.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl