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Table 4 The relationship between measures of body mass index and body composition and mode of commuting

From: Associations of extracurricular physical activity patterns and body composition components in a multi-ethnic population of UK children (the Size and Lung Function in Children study): a multilevel modelling analysis

Variable

BMI z-score percentile categories

ln(FMI) z-score percentile categories

FFMI z-score percentile categories

Wald Chi-Squared = 82.02; p < .001

Wald Chi-Squared = 46.21; p < .001

Wald Chi-Squared = 87.64; p < .001

Level 1

O.R. [95% C.I.]

p-value

O.R. [95% C.I.]

p-value

O.R. [95% C.I.]

p-value

Commuting mode (reference: passive)

 Mixed

0.471 [0.112–1.979]

.304

0.584 [0.099–3.463]

.554

0.751 [0.138–4.076]

.740

 Active

0.678 [0.531–0.865]

.002**

0.679 [0.499–0.922]

.013*

0.918 [0.665–1.267]

.603

 Disagreement

1.028 [0.769–1.375]

.850

0.994 [0.696–1.419]

.972

1.451 [0.998–2.110]

.051

Sex (reference: female)

 

 Male

0.856 [0.698–1.050]

.136

0.987 [0.763–1.275]

.918

1.085 [0.833–1.414]

.546

Age at test

1.118 [1.049–1.191]

.001**

1.012 [0.935–1.095]

.770

1.034 [0.951–1.123]

.436

Ethnicity (reference: white/other)

 Black

1.459 [1.104–1.927]

.008**

1.698 [1.191–2.420]

.003**

1.547 [1.084–2.209]

.016*

 South Asian

0.606 [0.453–0.813]

.001**

1.302 [0.924–1.837]

.132

0.248 [0.153–0.401]

<.001***

Family Affluence Scale (reference: low)

 Moderate

1.093 [0.738–1.618]

.658

1.208 [0.737–1.981]

.453

1.382 [0.827–2.307]

.217

 High

1.024 [0.641–1.638]

.920

1.574 [0.875–2.832]

.130

1.888 [1.026–3.474]

.041*

Free school lunches (reference: no)

 

 Yes

1.412 [1.078–1.851]

.012*

1.633 [1.178–2.265]

.003**

1.534 [1.081–2.177]

.017*

Cars owned (reference: 0)

 1

0.961 [0.727–1.269]

.777

1.008 [0.713–1.426]

.964

0.990 [0.691–1.417]

.955

 2

0.978 [0.679–1.409]

.904

0.819 [0.515–1.300]

.397

0.664 [0.407–1.082]

.100

Multiple Deprivation Index (reference: low)

 Intermediate

1.265 [0.910–1.760]

.162

1.132 [0.747–1.714]

.559

1.317 [0.849–2.043]

.219

 High

1.407 [1.010–1.961]

.043*

1.417 [0.949–2.116]

.089

1.332 [0.846–2.097]

.216

Level 2: Variance on School Level

0.045 [0.009–0.210]

 

0.036 [0.005–0.291]

 

0.092 [0.019–0.441]

 
  1. O.R. Odds Ratio, C.I. Confidence Interval, BMI Body Mass Index, FMI Fat Mass Index, FFMI Fat-Free Mass Index
  2. *: p < .05; **: p < .01; ***: p < .001
  3. Significant associations (p < .05) on the first level of the multilevel model are in bold
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BMC Public Health

ISSN: 1471-2458

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