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Table 4 Examining the contributions of motorised travel distance, active travel distance and engine size (n = 3463), fitting model in Figure 1

From: Associations of health, physical activity and weight status with motorised travel and transport carbon dioxide emissions: a cross-sectional, observational study

  

Multivariable probit regression coefficients and 95%CI for effects on total standardised log-transformed transport CO2 emissions

Indirect via active + motorised travel (path 1)

Indirect via motorised travel only (path 2)

Indirect via engine size (path 3)

Direct (‘unexplained’) (path 4)

Total (sum of paths 1–4)

Weight status

Normal

0

0

0

0

0

 

Overweight

.022 (.010,.034)

.124 (.042,.205)

.008 (-.007,.024)

.007 (-.017,.031)

.161 (.077,.245)

 

Obese

.022 (.007,.036)

.127 (.011,.243)

.028 (.004,.051)

-.016 (-.049,.017)

.161 (.043,.279)

General health

Excellent/good

0

0

0

0

0

 

Fair

.014 (.000,.028)

-.070 (-.160,.020)

-.004 (-.025,.016)

.008 (-.021,.036)

-.052 (-.145,.041)

 

Poor

.024 (-.006,.053)

-.171 (-.362,.020)

-.018 (-.062,.027)

.011 (-.044,.067)

-.153 (-.341,.035)

Long-term illness

No

0

0

0

0

0

 

Yes

.017 (.003,.031)

.007 (-.094,.109)

-.004 (-.026,.018)

.014 (-.017,.044)

.034 (-.069,.137)

Walking for recreation in past week

None

0

0

0

0

0

 

1-149 min

-.022 (-.036,-.008)

.182 (.101,.263)

-.007 (-.024,.011)

.002 (-.024,.027)

.155 (.071,.240)

 

150-419 min

-.033 (-.048,-.017)

.217 (.123,.312)

.019 (−.003,.040)

-.016 (-.046,.014)

.188 (.090,.286)

 

≥420 min

-.042 (-.062,-.022)

.198 (.072,.324)

.016 (-.011,.044)

-.033 (-.069,.003)

.139 (.008,.270)

Cycling for recreation in past week

None

0

0

0

0

0

 

1-149 min

-.037 (-.058,-.016)

-.094 (-.215,.026)

.001 (-.024,.026)

-.014 (-.048,.019)

-.145 (-.271,-.018)

 

≥150 min

-.074 (-.103,-.045)

-.125 (-.282,.031)

-.010 (-.047,.027)

-.014 (-.052,.025)

-.223 (-.383,-.062)

Other leisure-time MVPA in past week

None

0

0

0

0

0

 

1-149 min

-.012 (−.024,.000)

.161 (.075,.247)

-.001 (-.018,.017)

.004 (-.022,.029)

.152 (.061,.243)

 

150-419 min

-.011 (-.023,.001)

.231 (.135,.327)

-.001 (-.020,.019)

.007 (-.022,.036)

.227 (.128,.325)

 

≥420 min

-.001 (-.017,.015)

.168 (.039,.297)

.020 (-.008,.048)

-.007 (-.044,.030)

.181 (.047,.315)

  1. CI = confidence interval, MVPA = moderate-to-vigorous physical activity. Analyses adjust for all variables in columns and in Table 1. Endogenous distance and CO2 variables are standardised log-transformed. Note that the ‘total effects’ in this table are equivalent to the results shown in multivariable model 2 of Table 2, except that these are probit rather than linear regression coefficients.