# Correlational findings

## Study Chen et al. (2005): study JP 1999

Public
9-10 aged children followed 3 years, Japan 1999-2002
Survey name
JP-Toyama Birth Cohort Study
Sample
Respondents
N = 7794
Non Response
14,4%
Assessment
Questionnaire: Paper & Pencil Interview (PAPI)

## Correlate

Authors's Label
Frequency of physical activity
Our Classification
Error Estimates
T1-T2 correspondence r=+,31
Remarks
Assessed at T1 and T2 with 3 year difference
Distribution
N= 4:2143(27,5)%;  3: 3835 (49,2)%; 2:1691(21,7)% ;1:125 (1,6)%
Operationalization
Self report on question on frequency of physical activity
4: very often
3: often
2: seldom
1:almost never

## Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks O-QOL-cm-sq-v-5-a = + p < .05 T1 physical activity very often by T2 happiness

vs often           OR = 1,34 CI95[1,20-1,49]
vs seldom          OR = 1,61 CI95[1,42-1,84]
vs almost never    OR = 2,06 CI95[1,39-3,05]
OR no controls
O-QOL-cm-sq-v-5-a = + p < .05 vs often           OR = 1,27 CI95[1,14-1,42]
vs seldom          OR = 1,58 CI95[1,38-1,81]
vs almost never    OR = 1,92 CI95[1,29-2,87]
OR controlled for
- age
- sexe
- T1 BMI
O-QOL-cm-sq-v-5-a = +/- p < .05 vs often           OR = 1,09 CI95[0,86-1,38]
vs seldom          OR = 1,17 CI95[0,71-1,95]
vs almost never    OR = 0.73 CI95[0,33-1,95]
- Preference for physical activity
- breakfast eating
- Television viewing
- Bedtime
- Sleep duration
- age
- sexe
- T1 BMI
O-QOL-cm-sq-v-5-a = - T1 Frequency of PA   T2 happiness
%happy %unhappy difference
- Very often         47,9   52,1       -4,2
- often              40,7   59,3      -18,6
- seldom             36,3   63,7      -27,4
- almost never       30,9   69,1      -38,2
O-QOL-cm-sq-v-5-a = - T1-T2 CHANGE        T2 happiness
in Frequency of PA  %happy  %unhappy difference
- remained often    48,0     52,0    -4,0
- often to seldom   29,9     70,1    -40,2
- seldom to often   43,1     56,9    -13,8
- remained seldom   29,4     70,6    -41,2
O-QOL-cm-sq-v-5-a = + p < .05 T1-T2 CHANGE frequency of PA by T2 happiness

Remained Frequency of PA often
vs often to seldom   OR = 2,16 CI95[1,91-2,46]
vs seldom to often   OR = 1,22 CI95[1,05-1,41]
vs remaind selsom    OR = 2,22 CI95[1,91-2,58]
OR not controlled
O-QOL-cm-sq-v-5-a = + p < .05 Remained Frequency of PA often
vs often to seldom   OR = 2,10 CI95[1,84-2,39]
vs seldom to often   OR = 1,23 CI95[1,05-1,44]
vs remaind selsom    OR = 2,21 CI95[1,88-2,59]
OR controled for
- age
- sexe
- T1 BMI
O-QOL-cm-sq-v-5-a = + p < .05 Remained Frequency of PA often
vs often to seldom   OR = 2,09 CI95[1,81-2,42]
vs seldom to often   OR = 1,20 CI95[1,02-1,42]
vs remaind seldom    OR = 2,09 CI95[1,76-2,49]