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Table 3 Unadjusted, adjusted, and adjusted multilevel binomial logistic regression models for odds of switching from inactive to active modes and switching from active to inactive modes ‘today’

From: Children’s Health in London and Luton (CHILL) cohort: a 12-month natural experimental study of the effects of the Ultra Low Emission Zone on children’s travel to school

Predictor variable

Switching from inactive to active modes

Switching from active to inactive modes

Unadjusted model

Adjusted model

Adjusted multilevel model

Unadjusted model

Adjusted model

Adjusted multilevel model

OR

OR

OR

OR

OR

OR

(95% CI)

(95% CI)

(95% CI)

(95% CI)

(95% CI)

(95% CI)

Constant

0.26

0.10

0.03

0.26

0.02

0.02

 

(0.20–0.33)

(0.01–2.09)

(0.00–1.65)

(0.21–0.32)

(0.00–0.37)

(0.00–0.41)

London

2.83

3.02

3.64

0.22

0.14

0.11

 

(1.77–4.50)

(1.60–5.70)

(1.21–10.92)

(0.15–0.31)

(0.08–0.23)

(0.05–0.24)

Sex (Female)

 

0.96

0.91

 

0.96

0.93

Ref: Male

 

(0.65–1.43)

(0.49–1.67)

 

(0.65–1.43)

(0.60—1.43)

Age

 

1.01

1.77

 

1.01

1.06

  

(0.77–1.32)

(1.06–2.96)

 

(0.77—1.32)

(0.77–1.47)

Ethnicity (White)

 

2.17

2.59

 

0.61

0.54

Ref: BAME

 

(1.33–3.60)

(1.28–5.23)

 

(0.40–0.94)

(0.33–0.90)

Distance to school (Near ≤ 0.78 km)

 

2.68

3.67

 

0.24

0.20

Ref: Far (> 0.78 km)

 

(1.55–4.65)

(1.81–7.43)

 

(0.16–0.36)

(0.12–0.31)

Vehicle ownership (Yes)

 

0.05

0.03

 

48.46

60.20

Ref: No

 

(0.01–0.14)

(0.01–0.10)

 

(10.35–865.40)

(7.88–459.84)

Employment (Part-time)

 

1.79

2.14

 

1.60

1.74

Ref: Full-time

 

(0.99–3.26)

(1.04–4.39)

 

(1.04–2.49)

(1.07–2.80)

Employment (Unemployed)

 

2.25

1.07

 

1.04

0.94

Ref: Full-time

 

(0.50–9.04)

(0.23–4.92)

 

(0.50–2.04)

(0.44–2.01)

Employment (Other)

 

0.59

0.78

 

0.71

0.75

Ref: Full-time

 

(0.16–1.88)

(0.20–3.08)

 

(0.32–1.49)

(0.33—1.72)

Occupation (Skilled)

 

0.41

0.29

 

1.05

0.99

Ref: Managerial/professional

 

(0.15–1.03)

(0.09–0.90)

 

(0.61–1.76)

(0.56–1.76)

Occupation (Unskilled)

 

0.66

0.50

 

0.85

0.85

Ref: Managerial/professional

 

(0.24–1.70)

(0.16–1.58)

 

(0.40–1.69)

(0.40–1.84)

Occupation (Other)

 

0.90

1.00

 

0.88

0.87

Ref: Managerial/professional

 

(0.46–1.74)

(0.46–2.17)

 

(0.51–1.50)

(0.48–1.55)

IDACI quintile (linear)

 

1.07

1.53

 

1.50

1.89

  

(0.35–2.99)

(0.45–5.24)

 

(0.78–2.87)

(0.82–4.35)

Crime quintile (linear)

 

0.91

0.54

 

1.86

2.07

  

(0.26–2.91)

(0.11–2.57)

 

(1.00–3.37)

(2.06–2.08)

Observations

469

261

261

1455

668

668

R2

0.043

0.263

0.354

0.054

0.209

0.625

ICC

  

0.36

  

0.21

  1. OR Odds ratio, 95% CI 95% Confidence interval, ICC Intraclass correlation coefficient