Median weekday physical activity levels (CPM) from 7 am to midnight by mode of travel to school.

<p>Median weekday physical activity levels (CPM) from 7 am to midnight by mode of travel to school.</p

Mean weekend levels of physical activity by mode of transport to school.

<p>Mean differences compare level of physical activity in children who travel by public transport or car, to those who walk or cycle to and from school.</p><p>Analyses are adjusted for gender, age quartiles, day order, day of week (i.e., Saturday or Sunday), month, ethnicity and random effects for child and school.</p

Mode of transport to school by gender, ethnic group, and distance from home to school.

<p>WE = white Europeans, SA = South Asians, BAC = black African Caribbeans, row %s = row percentages, col %s = column percentages.</p>†<p>Pearson Chi² test for difference between categories.</p>‡<p>Fisher's Exact test for difference between categories.</p>§<p>‘Other’ ethnic group has been removed from the ethnic group analysis.</p><p>*Distance to school in tertiles – number of subjects with missing data = 36.</p

Mean (95% CI) weekday physical activity levels (steps) by median distance to school between 8 to 9 am and 3 to 5 pm on weekdays in walkers only (no other forms of transport used).

<p>Mean (95% CI) weekday physical activity levels (steps) by median distance to school between 8 to 9 am and 3 to 5 pm on weekdays in walkers only (no other forms of transport used).</p

Adjusted activity levels in children who walk/cycle to school by distance to school (i) between 8 to 9 am and 3 to 5 pm on weekdays, (ii) on weekdays excluding periods of active travel.

†<p>Distances from home to school in tertiles.</p><p>Analyses are adjusted for sex, age quartiles, day order, day of week, month, ethnicity, distance to school in tertiles and random effects for child and school.</p

Adjusted mean weekday levels of physical activity by mode of transport to school (i) on weekdays, (ii) between 8 to 9 am and 3 to 5 pm on weekdays, (iii) on weekdays excluding periods of active travel.

<p>Mean differences compare level of physical activity in children who travel by public transport or car, to those who walk or cycle to and from school.</p><p>Analyses are adjusted for gender, age quartiles, day order, day of week, month, ethnicity and random effects for child and school.</p><p>Due to rounding and adjustment for other factors the numbers in parts (ii) and (iii) do not add up exactly to equal part (i).</p><p>MVPA = moderate to vigorous physical activity.</p

Adjusted means and percentage differences in skinfolds, fat mass index and waist circumference by NSSEC and ethnic group.

<p>Mean: means adjusted for sex, age, observer, month and school (random effect). Missing values: sum of skinfolds (n = 12), fat mass index (n = 64), waist circumference (n = 1).</p><p>95% CI: 95% confidence interval of the mean.</p>¶<p>Estimates adjusted for ethnicity (all groups included).</p>‡<p>interaction test of NS-SEC and main ethnic groups (white European, black African-Caribbean, South Asian) and excluding “unclassified” NS-SEC group fitting NS-SEC as an ordinal variable.</p>§<p>interaction test of NS-SEC and main ethnic groups (white European, black African-Caribbean, South Asian) and excluding “unclassified” NS-SEC group fitting NS-SEC as a categorical variable.</p>†<p>per NS-SEC decrement from professional to economically inactive (excluding unclassified group).</p>€<p>per NS-SEC decrement from professional to routine &manual (excluding economically inactive and unclassified groups).</p>*<p>p-value for NS-SEC fitted as an unordered nominal variable (excluding unclassified group).</p><p>Note: Percentage variance due to school differences: sum of skinfolds 1.5%, fat mas index 3.5%, waist circumference 0.9%.</p

Adjusted means and percentage differences in height, weight and ponderal index by NS-SEC and ethnic group.

<p>Mean: means adjusted for sex, age, observer, month and school (random effect).</p><p>95% CI: 95% confidence interval of the mean.</p>¶<p>Estimates adjusted for ethnicity (all groups included).</p>‡<p>interaction test of NS-SEC and main ethnic groups (white European, black African-Caribbean, South Asian) and excluding “unclassified” NS-SEC group fitting NS-SEC as an ordinal variable.</p>§<p>interaction test of NS-SEC and main ethnic groups (white European, black African-Caribbean, South Asian) and excluding “unclassified” NS-SEC group fitting NS-SEC as a categorical variable.</p>†<p>per NS-SEC decrement from professional to economically inactive (excluding unclassified group).</p>€<p>per NS-SEC decrement from professional to routine &manual (excluding economically inactive and unclassified groups).</p>*<p>p-value for NS-SEC fitted as an unordered nominal variable (excluding unclassified group).</p><p>Note: Percentage variance due to school differences: height 0.3%, weight 0.9%, ponderal index 1.3%.</p

Adjusted means and mean differences in triglyceride, HDL-cholesterol and C-reactive protein by NS-SEC and ethnic group.

<p>Mean: means adjusted for sex, age, observer, month and school (random effect). Missing values: CRP (n = 159).</p><p>95% CI: 95% confidence interval of the mean.</p>¶<p>Estimates adjusted for ethnicity (all groups included).</p>‡<p>interaction test of NS-SEC and main ethnic groups (white European, black African-Caribbean, South Asian) and excluding “unclassified” NS-SEC group fitting NS-SEC as an ordinal variable.</p>§<p>interaction test of NS-SEC and main ethnic groups (white European, black African-Caribbean, South Asian) and excluding “unclassified” NS-SEC group fitting NS-SEC as a categorical variable.</p>†<p>per NS-SEC decrement from professional to economically inactive (excluding unclassified group).</p>€<p>per NS-SEC decrement from professional to routine &manual (excluding economically inactive and unclassified groups).</p>*<p>p-value for NS-SEC fitted as an unordered nominal variable (excluding unclassified group).</p><p>Percentage variance due to school differences: Triglyceride 5.3%, HDL-cholesterol 1.8%, C-reactive protein 1.6%.</p

Socio-economic position (NS-SEC) by ethnic group in CHASE, n (%).

<p>Some column percentages do not total 100 due to rounding errors.</p